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7	JobTracker (Hadoop 0.20.1 API)
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58	<A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred"><B>PREV CLASS</B></A>
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79	SUMMARY: <A HREF="#nested_class_summary">NESTED</A> \| <A HREF="#field_summary">FIELD</A> \| CONSTR \| <A HREF="#method_summary">METHOD</A></FONT></TD>
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90	<FONT SIZE="-1">
91	org.apache.hadoop.mapred</FONT>
92	<BR>
93	Class JobTracker</H2>
94	<PRE>
95	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96	<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapred.JobTracker</B>
97	</PRE>
98	<DL>
99	<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/ipc/VersionedProtocol.html" title="interface in org.apache.hadoop.ipc">VersionedProtocol</A>, <A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html" title="interface in org.apache.hadoop.security.authorize">RefreshAuthorizationPolicyProtocol</A></DD>
100	</DL>
101	<HR>
102	<DL>
103	<DT><PRE>public class <B>JobTracker</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html" title="interface in org.apache.hadoop.security.authorize">RefreshAuthorizationPolicyProtocol</A></DL>
104	</PRE>
105
106	<P>
107	JobTracker is the central location for submitting and
108	tracking MR jobs in a network environment.
109	<P>
110
111	<P>
112	<HR>
113
114	<P>
115	<!-- ======== NESTED CLASS SUMMARY ======== -->
116
117	<A NAME="nested_class_summary"><!-- --></A>
118	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
119	<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
120	<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
121	<B>Nested Class Summary</B></FONT></TH>
122	</TR>
123	<TR BGCOLOR="white" CLASS="TableRowColor">
124	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
125	<CODE>static class</CODE></FONT></TD>
126	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.IllegalStateException.html" title="class in org.apache.hadoop.mapred">JobTracker.IllegalStateException</A></B></CODE>
127
128	<BR>
129	A client tried to submit a job before the Job Tracker was ready.</TD>
130	</TR>
131	<TR BGCOLOR="white" CLASS="TableRowColor">
132	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
133	<CODE>static class</CODE></FONT></TD>
134	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.State.html" title="enum in org.apache.hadoop.mapred">JobTracker.State</A></B></CODE>
135
136	<BR>
137	</TD>
138	</TR>
139	</TABLE>
140	<!-- =========== FIELD SUMMARY =========== -->
141
142	<A NAME="field_summary"><!-- --></A>
143	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
144	<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
145	<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
146	<B>Field Summary</B></FONT></TH>
147	</TR>
148	<TR BGCOLOR="white" CLASS="TableRowColor">
149	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
150	<CODE>static int</CODE></FONT></TD>
151	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#CLUSTER_INCREMENT">CLUSTER_INCREMENT</A></B></CODE>
152
153	<BR>
154	</TD>
155	</TR>
156	<TR BGCOLOR="white" CLASS="TableRowColor">
157	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
158	<CODE>static long</CODE></FONT></TD>
159	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#COUNTER_UPDATE_INTERVAL">COUNTER_UPDATE_INTERVAL</A></B></CODE>
160
161	<BR>
162	</TD>
163	</TR>
164	<TR BGCOLOR="white" CLASS="TableRowColor">
165	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
166	<CODE>static int</CODE></FONT></TD>
167	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#FILE_NOT_FOUND">FILE_NOT_FOUND</A></B></CODE>
168
169	<BR>
170	</TD>
171	</TR>
172	<TR BGCOLOR="white" CLASS="TableRowColor">
173	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
174	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
175	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#FOR_REDUCE_TASK">FOR_REDUCE_TASK</A></B></CODE>
176
177	<BR>
178	The reduce task number for which this map output is being transferred</TD>
179	</TR>
180	<TR BGCOLOR="white" CLASS="TableRowColor">
181	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
182	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
183	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#FROM_MAP_TASK">FROM_MAP_TASK</A></B></CODE>
184
185	<BR>
186	The map task from which the map output data is being transferred</TD>
187	</TR>
188	<TR BGCOLOR="white" CLASS="TableRowColor">
189	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
190	<CODE>static int</CODE></FONT></TD>
191	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#HEARTBEAT_INTERVAL_MIN">HEARTBEAT_INTERVAL_MIN</A></B></CODE>
192
193	<BR>
194	</TD>
195	</TR>
196	<TR BGCOLOR="white" CLASS="TableRowColor">
197	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
198	<CODE>static org.apache.commons.logging.Log</CODE></FONT></TD>
199	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#LOG">LOG</A></B></CODE>
200
201	<BR>
202	</TD>
203	</TR>
204	<TR BGCOLOR="white" CLASS="TableRowColor">
205	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
206	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
207	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#MAP_OUTPUT_LENGTH">MAP_OUTPUT_LENGTH</A></B></CODE>
208
209	<BR>
210	The custom http header used for the map output length.</TD>
211	</TR>
212	<TR BGCOLOR="white" CLASS="TableRowColor">
213	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
214	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
215	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#RAW_MAP_OUTPUT_LENGTH">RAW_MAP_OUTPUT_LENGTH</A></B></CODE>
216
217	<BR>
218	The custom http header used for the "raw" map output length.</TD>
219	</TR>
220	<TR BGCOLOR="white" CLASS="TableRowColor">
221	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
222	<CODE>static int</CODE></FONT></TD>
223	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#SUCCESS">SUCCESS</A></B></CODE>
224
225	<BR>
226	</TD>
227	</TR>
228	<TR BGCOLOR="white" CLASS="TableRowColor">
229	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
230	<CODE>static int</CODE></FONT></TD>
231	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#TRACKERS_OK">TRACKERS_OK</A></B></CODE>
232
233	<BR>
234	</TD>
235	</TR>
236	<TR BGCOLOR="white" CLASS="TableRowColor">
237	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
238	<CODE>static int</CODE></FONT></TD>
239	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#UNKNOWN_TASKTRACKER">UNKNOWN_TASKTRACKER</A></B></CODE>
240
241	<BR>
242	</TD>
243	</TR>
244	<TR BGCOLOR="white" CLASS="TableRowColor">
245	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
246	<CODE>static long</CODE></FONT></TD>
247	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#versionID">versionID</A></B></CODE>
248
249	<BR>
250	version 3 introduced to replace
251	emitHearbeat/pollForNewTask/pollForTaskWithClosedJob with
252	<A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus, boolean, boolean, boolean, short)"><CODE>heartbeat(TaskTrackerStatus, boolean, boolean, boolean, short)</CODE></A>
253	version 4 changed TaskReport for HADOOP-549.</TD>
254	</TR>
255	<TR BGCOLOR="white" CLASS="TableRowColor">
256	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
257	<CODE>static long</CODE></FONT></TD>
258	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#versionID">versionID</A></B></CODE>
259
260	<BR>
261	</TD>
262	</TR>
263	<TR BGCOLOR="white" CLASS="TableRowColor">
264	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
265	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
266	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#WORKDIR">WORKDIR</A></B></CODE>
267
268	<BR>
269	</TD>
270	</TR>
271	</TABLE>
272	<A NAME="fields_inherited_from_class_org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol"><!-- --></A>
273	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
274	<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
275	<TH ALIGN="left"><B>Fields inherited from interface org.apache.hadoop.security.authorize.<A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html" title="interface in org.apache.hadoop.security.authorize">RefreshAuthorizationPolicyProtocol</A></B></TH>
276	</TR>
277	<TR BGCOLOR="white" CLASS="TableRowColor">
278	<TD><CODE><A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html#versionID">versionID</A></CODE></TD>
279	</TR>
280	</TABLE>
281
282	<!-- ========== METHOD SUMMARY =========== -->
283
284	<A NAME="method_summary"><!-- --></A>
285	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
286	<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
287	<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
288	<B>Method Summary</B></FONT></TH>
289	</TR>
290	<TR BGCOLOR="white" CLASS="TableRowColor">
291	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
292	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus></CODE></FONT></TD>
293	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#activeTaskTrackers()">activeTaskTrackers</A></B>()</CODE>
294
295	<BR>
296	Get the active task tracker statuses in the cluster</TD>
297	</TR>
298	<TR BGCOLOR="white" CLASS="TableRowColor">
299	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
300	<CODE> void</CODE></FONT></TD>
301	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#addJobInProgressListener(org.apache.hadoop.mapred.JobInProgressListener)">addJobInProgressListener</A></B>(org.apache.hadoop.mapred.JobInProgressListener listener)</CODE>
302
303	<BR>
304	Registers a <CODE>JobInProgressListener</CODE> for updates from this
305	<CODE>TaskTrackerManager</CODE>.</TD>
306	</TR>
307	<TR BGCOLOR="white" CLASS="TableRowColor">
308	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
309	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus></CODE></FONT></TD>
310	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#blacklistedTaskTrackers()">blacklistedTaskTrackers</A></B>()</CODE>
311
312	<BR>
313	Get the blacklisted task tracker statuses in the cluster</TD>
314	</TR>
315	<TR BGCOLOR="white" CLASS="TableRowColor">
316	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
317	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress></CODE></FONT></TD>
318	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#completedJobs()">completedJobs</A></B>()</CODE>
319
320	<BR>
321	</TD>
322	</TR>
323	<TR BGCOLOR="white" CLASS="TableRowColor">
324	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
325	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress></CODE></FONT></TD>
326	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#failedJobs()">failedJobs</A></B>()</CODE>
327
328	<BR>
329	</TD>
330	</TR>
331	<TR BGCOLOR="white" CLASS="TableRowColor">
332	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
333	<CODE> void</CODE></FONT></TD>
334	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#failJob(org.apache.hadoop.mapred.JobInProgress)">failJob</A></B>(org.apache.hadoop.mapred.JobInProgress job)</CODE>
335
336	<BR>
337	Fail a job and inform the listeners.</TD>
338	</TR>
339	<TR BGCOLOR="white" CLASS="TableRowColor">
340	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
341	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</A></CODE></FONT></TD>
342	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getAddress(org.apache.hadoop.conf.Configuration)">getAddress</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</CODE>
343
344	<BR>
345	</TD>
346	</TR>
347	<TR BGCOLOR="white" CLASS="TableRowColor">
348	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
349	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[]</CODE></FONT></TD>
350	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getAllJobs()">getAllJobs</A></B>()</CODE>
351
352	<BR>
353	Get all the jobs submitted.</TD>
354	</TR>
355	<TR BGCOLOR="white" CLASS="TableRowColor">
356	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
357	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
358	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getAssignedTracker(org.apache.hadoop.mapred.TaskAttemptID)">getAssignedTracker</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskId)</CODE>
359
360	<BR>
361	Get tracker name for a given task id.</TD>
362	</TR>
363	<TR BGCOLOR="white" CLASS="TableRowColor">
364	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
365	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
366	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getBuildVersion()">getBuildVersion</A></B>()</CODE>
367
368	<BR>
369	Returns the buildVersion of the JobTracker</TD>
370	</TR>
371	<TR BGCOLOR="white" CLASS="TableRowColor">
372	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
373	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[]</CODE></FONT></TD>
374	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getCleanupTaskReports(org.apache.hadoop.mapred.JobID)">getCleanupTaskReports</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
375
376	<BR>
377	Grab a bunch of info on the cleanup tasks that make up the job</TD>
378	</TR>
379	<TR BGCOLOR="white" CLASS="TableRowColor">
380	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
381	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</A></CODE></FONT></TD>
382	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getClusterStatus()">getClusterStatus</A></B>()</CODE>
383
384	<BR>
385	<B>Deprecated.</B> <I>use <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getClusterStatus(boolean)"><CODE>getClusterStatus(boolean)</CODE></A></I></TD>
386	</TR>
387	<TR BGCOLOR="white" CLASS="TableRowColor">
388	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
389	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</A></CODE></FONT></TD>
390	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getClusterStatus(boolean)">getClusterStatus</A></B>(boolean detailed)</CODE>
391
392	<BR>
393	Get the current status of the cluster</TD>
394	</TR>
395	<TR BGCOLOR="white" CLASS="TableRowColor">
396	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
397	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
398	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getFilesystemName()">getFilesystemName</A></B>()</CODE>
399
400	<BR>
401	Grab the local fs name</TD>
402	</TR>
403	<TR BGCOLOR="white" CLASS="TableRowColor">
404	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
405	<CODE> int</CODE></FONT></TD>
406	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getInfoPort()">getInfoPort</A></B>()</CODE>
407
408	<BR>
409	</TD>
410	</TR>
411	<TR BGCOLOR="white" CLASS="TableRowColor">
412	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
413	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends org.apache.hadoop.mapred.JobTrackerInstrumentation></CODE></FONT></TD>
414	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getInstrumentationClass(org.apache.hadoop.conf.Configuration)">getInstrumentationClass</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</CODE>
415
416	<BR>
417	</TD>
418	</TR>
419	<TR BGCOLOR="white" CLASS="TableRowColor">
420	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
421	<CODE> org.apache.hadoop.mapred.JobInProgress</CODE></FONT></TD>
422	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJob(org.apache.hadoop.mapred.JobID)">getJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
423
424	<BR>
425	Obtain the job object identified by jobid</TD>
426	</TR>
427	<TR BGCOLOR="white" CLASS="TableRowColor">
428	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
429	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/Counters.html" title="class in org.apache.hadoop.mapred">Counters</A></CODE></FONT></TD>
430	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJobCounters(org.apache.hadoop.mapred.JobID)">getJobCounters</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
431
432	<BR>
433	Grab the current job counters</TD>
434	</TR>
435	<TR BGCOLOR="white" CLASS="TableRowColor">
436	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
437	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobProfile.html" title="class in org.apache.hadoop.mapred">JobProfile</A></CODE></FONT></TD>
438	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJobProfile(org.apache.hadoop.mapred.JobID)">getJobProfile</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
439
440	<BR>
441	Grab a handle to a job that is already known to the JobTracker.</TD>
442	</TR>
443	<TR BGCOLOR="white" CLASS="TableRowColor">
444	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
445	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[]</CODE></FONT></TD>
446	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJobsFromQueue(java.lang.String)">getJobsFromQueue</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> queue)</CODE>
447
448	<BR>
449	Gets all the jobs submitted to the particular Queue</TD>
450	</TR>
451	<TR BGCOLOR="white" CLASS="TableRowColor">
452	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
453	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A></CODE></FONT></TD>
454	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJobStatus(org.apache.hadoop.mapred.JobID)">getJobStatus</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
455
456	<BR>
457	Grab a handle to a job that is already known to the JobTracker.</TD>
458	</TR>
459	<TR BGCOLOR="white" CLASS="TableRowColor">
460	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
461	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
462	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getJobTrackerMachine()">getJobTrackerMachine</A></B>()</CODE>
463
464	<BR>
465	</TD>
466	</TR>
467	<TR BGCOLOR="white" CLASS="TableRowColor">
468	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
469	<CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
470	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getLocalJobFilePath(org.apache.hadoop.mapred.JobID)">getLocalJobFilePath</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobId)</CODE>
471
472	<BR>
473	Get the localized job file path on the job trackers local file system</TD>
474	</TR>
475	<TR BGCOLOR="white" CLASS="TableRowColor">
476	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
477	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[]</CODE></FONT></TD>
478	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getMapTaskReports(org.apache.hadoop.mapred.JobID)">getMapTaskReports</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
479
480	<BR>
481	Grab a bunch of info on the map tasks that make up the job</TD>
482	</TR>
483	<TR BGCOLOR="white" CLASS="TableRowColor">
484	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
485	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A></CODE></FONT></TD>
486	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNewJobId()">getNewJobId</A></B>()</CODE>
487
488	<BR>
489	Allocates a new JobId string.</TD>
490	</TR>
491	<TR BGCOLOR="white" CLASS="TableRowColor">
492	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
493	<CODE> int</CODE></FONT></TD>
494	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNextHeartbeatInterval()">getNextHeartbeatInterval</A></B>()</CODE>
495
496	<BR>
497	Calculates next heartbeat interval using cluster size.</TD>
498	</TR>
499	<TR BGCOLOR="white" CLASS="TableRowColor">
500	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
501	<CODE> <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A></CODE></FONT></TD>
502	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNode(java.lang.String)">getNode</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</CODE>
503
504	<BR>
505	Return the Node in the network topology that corresponds to the hostname</TD>
506	</TR>
507	<TR BGCOLOR="white" CLASS="TableRowColor">
508	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
509	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A>></CODE></FONT></TD>
510	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNodesAtMaxLevel()">getNodesAtMaxLevel</A></B>()</CODE>
511
512	<BR>
513	Returns a collection of nodes at the max level</TD>
514	</TR>
515	<TR BGCOLOR="white" CLASS="TableRowColor">
516	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
517	<CODE> int</CODE></FONT></TD>
518	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNumberOfUniqueHosts()">getNumberOfUniqueHosts</A></B>()</CODE>
519
520	<BR>
521	</TD>
522	</TR>
523	<TR BGCOLOR="white" CLASS="TableRowColor">
524	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
525	<CODE> int</CODE></FONT></TD>
526	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNumResolvedTaskTrackers()">getNumResolvedTaskTrackers</A></B>()</CODE>
527
528	<BR>
529	</TD>
530	</TR>
531	<TR BGCOLOR="white" CLASS="TableRowColor">
532	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
533	<CODE> int</CODE></FONT></TD>
534	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getNumTaskCacheLevels()">getNumTaskCacheLevels</A></B>()</CODE>
535
536	<BR>
537	</TD>
538	</TR>
539	<TR BGCOLOR="white" CLASS="TableRowColor">
540	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
541	<CODE>static <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A></CODE></FONT></TD>
542	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getParentNode(org.apache.hadoop.net.Node, int)">getParentNode</A></B>(<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> node,
543	int level)</CODE>
544
545	<BR>
546	</TD>
547	</TR>
548	<TR BGCOLOR="white" CLASS="TableRowColor">
549	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
550	<CODE> long</CODE></FONT></TD>
551	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getProtocolVersion(java.lang.String, long)">getProtocolVersion</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> protocol,
552	long clientVersion)</CODE>
553
554	<BR>
555	Return protocol version corresponding to protocol interface.</TD>
556	</TR>
557	<TR BGCOLOR="white" CLASS="TableRowColor">
558	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
559	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</A></CODE></FONT></TD>
560	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getQueueInfo(java.lang.String)">getQueueInfo</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> queue)</CODE>
561
562	<BR>
563	Gets scheduling information associated with the particular Job queue</TD>
564	</TR>
565	<TR BGCOLOR="white" CLASS="TableRowColor">
566	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
567	<CODE> org.apache.hadoop.mapred.QueueManager</CODE></FONT></TD>
568	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getQueueManager()">getQueueManager</A></B>()</CODE>
569
570	<BR>
571	Return the <CODE>QueueManager</CODE> associated with the JobTracker.</TD>
572	</TR>
573	<TR BGCOLOR="white" CLASS="TableRowColor">
574	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
575	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</A>[]</CODE></FONT></TD>
576	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getQueues()">getQueues</A></B>()</CODE>
577
578	<BR>
579	Gets set of Job Queues associated with the Job Tracker</TD>
580	</TR>
581	<TR BGCOLOR="white" CLASS="TableRowColor">
582	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
583	<CODE> long</CODE></FONT></TD>
584	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getRecoveryDuration()">getRecoveryDuration</A></B>()</CODE>
585
586	<BR>
587	How long the jobtracker took to recover from restart.</TD>
588	</TR>
589	<TR BGCOLOR="white" CLASS="TableRowColor">
590	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
591	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[]</CODE></FONT></TD>
592	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getReduceTaskReports(org.apache.hadoop.mapred.JobID)">getReduceTaskReports</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
593
594	<BR>
595	Grab a bunch of info on the reduce tasks that make up the job</TD>
596	</TR>
597	<TR BGCOLOR="white" CLASS="TableRowColor">
598	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
599	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><org.apache.hadoop.mapred.JobInProgress></CODE></FONT></TD>
600	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getRunningJobs()">getRunningJobs</A></B>()</CODE>
601
602	<BR>
603	Version that is called from a timer thread, and therefore needs to be
604	careful to synchronize.</TD>
605	</TR>
606	<TR BGCOLOR="white" CLASS="TableRowColor">
607	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
608	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[]</CODE></FONT></TD>
609	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getSetupTaskReports(org.apache.hadoop.mapred.JobID)">getSetupTaskReports</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
610
611	<BR>
612	Grab a bunch of info on the setup tasks that make up the job</TD>
613	</TR>
614	<TR BGCOLOR="white" CLASS="TableRowColor">
615	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
616	<CODE> long</CODE></FONT></TD>
617	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getStartTime()">getStartTime</A></B>()</CODE>
618
619	<BR>
620	</TD>
621	</TR>
622	<TR BGCOLOR="white" CLASS="TableRowColor">
623	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
624	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
625	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getSystemDir()">getSystemDir</A></B>()</CODE>
626
627	<BR>
628	Grab the jobtracker system directory path where job-specific files are to be placed.</TD>
629	</TR>
630	<TR BGCOLOR="white" CLASS="TableRowColor">
631	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
632	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/TaskCompletionEvent.html" title="class in org.apache.hadoop.mapred">TaskCompletionEvent</A>[]</CODE></FONT></TD>
633	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTaskCompletionEvents(org.apache.hadoop.mapred.JobID, int, int)">getTaskCompletionEvents</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid,
634	int fromEventId,
635	int maxEvents)</CODE>
636
637	<BR>
638	Get task completion events for the jobid, starting from fromEventId.</TD>
639	</TR>
640	<TR BGCOLOR="white" CLASS="TableRowColor">
641	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
642	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]</CODE></FONT></TD>
643	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTaskDiagnostics(org.apache.hadoop.mapred.TaskAttemptID)">getTaskDiagnostics</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskId)</CODE>
644
645	<BR>
646	Get the diagnostics for a given task</TD>
647	</TR>
648	<TR BGCOLOR="white" CLASS="TableRowColor">
649	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
650	<CODE> org.apache.hadoop.mapred.TaskTrackerStatus</CODE></FONT></TD>
651	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTaskTracker(java.lang.String)">getTaskTracker</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> trackerID)</CODE>
652
653	<BR>
654	</TD>
655	</TR>
656	<TR BGCOLOR="white" CLASS="TableRowColor">
657	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
658	<CODE> org.apache.hadoop.mapred.TaskInProgress</CODE></FONT></TD>
659	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTip(org.apache.hadoop.mapred.TaskID)">getTip</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</A> tipid)</CODE>
660
661	<BR>
662	Returns specified TaskInProgress, or null.</TD>
663	</TR>
664	<TR BGCOLOR="white" CLASS="TableRowColor">
665	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
666	<CODE> int</CODE></FONT></TD>
667	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTotalSubmissions()">getTotalSubmissions</A></B>()</CODE>
668
669	<BR>
670	</TD>
671	</TR>
672	<TR BGCOLOR="white" CLASS="TableRowColor">
673	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
674	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
675	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTrackerIdentifier()">getTrackerIdentifier</A></B>()</CODE>
676
677	<BR>
678	Get the unique identifier (ie.</TD>
679	</TR>
680	<TR BGCOLOR="white" CLASS="TableRowColor">
681	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
682	<CODE> int</CODE></FONT></TD>
683	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getTrackerPort()">getTrackerPort</A></B>()</CODE>
684
685	<BR>
686	</TD>
687	</TR>
688	<TR BGCOLOR="white" CLASS="TableRowColor">
689	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
690	<CODE> boolean</CODE></FONT></TD>
691	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#hasRecovered()">hasRecovered</A></B>()</CODE>
692
693	<BR>
694	Whether the JT has recovered upon restart</TD>
695	</TR>
696	<TR BGCOLOR="white" CLASS="TableRowColor">
697	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
698	<CODE> boolean</CODE></FONT></TD>
699	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#hasRestarted()">hasRestarted</A></B>()</CODE>
700
701	<BR>
702	Whether the JT has restarted</TD>
703	</TR>
704	<TR BGCOLOR="white" CLASS="TableRowColor">
705	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
706	<CODE> org.apache.hadoop.mapred.HeartbeatResponse</CODE></FONT></TD>
707	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus, boolean, boolean, boolean, short)">heartbeat</A></B>(org.apache.hadoop.mapred.TaskTrackerStatus status,
708	boolean restarted,
709	boolean initialContact,
710	boolean acceptNewTasks,
711	short responseId)</CODE>
712
713	<BR>
714	The periodic heartbeat mechanism between the <A HREF="../../../../org/apache/hadoop/mapred/TaskTracker.html" title="class in org.apache.hadoop.mapred"><CODE>TaskTracker</CODE></A> and
715	the <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred"><CODE>JobTracker</CODE></A>.</TD>
716	</TR>
717	<TR BGCOLOR="white" CLASS="TableRowColor">
718	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
719	<CODE> void</CODE></FONT></TD>
720	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#initJob(org.apache.hadoop.mapred.JobInProgress)">initJob</A></B>(org.apache.hadoop.mapred.JobInProgress job)</CODE>
721
722	<BR>
723	Initialize the Job</TD>
724	</TR>
725	<TR BGCOLOR="white" CLASS="TableRowColor">
726	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
727	<CODE> boolean</CODE></FONT></TD>
728	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#isBlacklisted(java.lang.String)">isBlacklisted</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> trackerID)</CODE>
729
730	<BR>
731	Whether the tracker is blacklisted or not</TD>
732	</TR>
733	<TR BGCOLOR="white" CLASS="TableRowColor">
734	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
735	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[]</CODE></FONT></TD>
736	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#jobsToComplete()">jobsToComplete</A></B>()</CODE>
737
738	<BR>
739	Get the jobs that are not completed and not failed</TD>
740	</TR>
741	<TR BGCOLOR="white" CLASS="TableRowColor">
742	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
743	<CODE> void</CODE></FONT></TD>
744	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#killJob(org.apache.hadoop.mapred.JobID)">killJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</CODE>
745
746	<BR>
747	Kill the indicated job</TD>
748	</TR>
749	<TR BGCOLOR="white" CLASS="TableRowColor">
750	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
751	<CODE> boolean</CODE></FONT></TD>
752	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#killTask(org.apache.hadoop.mapred.TaskAttemptID, boolean)">killTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskid,
753	boolean shouldFail)</CODE>
754
755	<BR>
756	Mark a Task to be killed</TD>
757	</TR>
758	<TR BGCOLOR="white" CLASS="TableRowColor">
759	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
760	<CODE>static void</CODE></FONT></TD>
761	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#main(java.lang.String[])">main</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] argv)</CODE>
762
763	<BR>
764	Start the JobTracker process.</TD>
765	</TR>
766	<TR BGCOLOR="white" CLASS="TableRowColor">
767	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
768	<CODE> void</CODE></FONT></TD>
769	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#offerService()">offerService</A></B>()</CODE>
770
771	<BR>
772	Run forever</TD>
773	</TR>
774	<TR BGCOLOR="white" CLASS="TableRowColor">
775	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
776	<CODE> void</CODE></FONT></TD>
777	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#refreshServiceAcl()">refreshServiceAcl</A></B>()</CODE>
778
779	<BR>
780	Refresh the service-level authorization policy in-effect.</TD>
781	</TR>
782	<TR BGCOLOR="white" CLASS="TableRowColor">
783	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
784	<CODE> void</CODE></FONT></TD>
785	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#removeJobInProgressListener(org.apache.hadoop.mapred.JobInProgressListener)">removeJobInProgressListener</A></B>(org.apache.hadoop.mapred.JobInProgressListener listener)</CODE>
786
787	<BR>
788	Unregisters a <CODE>JobInProgressListener</CODE> from this
789	<CODE>TaskTrackerManager</CODE>.</TD>
790	</TR>
791	<TR BGCOLOR="white" CLASS="TableRowColor">
792	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
793	<CODE> void</CODE></FONT></TD>
794	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#reportTaskTrackerError(java.lang.String, java.lang.String, java.lang.String)">reportTaskTrackerError</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> taskTracker,
795	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> errorClass,
796	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> errorMessage)</CODE>
797
798	<BR>
799	Report a problem to the job tracker.</TD>
800	</TR>
801	<TR BGCOLOR="white" CLASS="TableRowColor">
802	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
803	<CODE> <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A></CODE></FONT></TD>
804	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#resolveAndAddToTopology(java.lang.String)">resolveAndAddToTopology</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</CODE>
805
806	<BR>
807	</TD>
808	</TR>
809	<TR BGCOLOR="white" CLASS="TableRowColor">
810	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
811	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress></CODE></FONT></TD>
812	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#runningJobs()">runningJobs</A></B>()</CODE>
813
814	<BR>
815	</TD>
816	</TR>
817	<TR BGCOLOR="white" CLASS="TableRowColor">
818	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
819	<CODE>static void</CODE></FONT></TD>
820	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#setInstrumentationClass(org.apache.hadoop.conf.Configuration, java.lang.Class)">setInstrumentationClass</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf,
821	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends org.apache.hadoop.mapred.JobTrackerInstrumentation> t)</CODE>
822
823	<BR>
824	</TD>
825	</TR>
826	<TR BGCOLOR="white" CLASS="TableRowColor">
827	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
828	<CODE> void</CODE></FONT></TD>
829	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#setJobPriority(org.apache.hadoop.mapred.JobID, java.lang.String)">setJobPriority</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid,
830	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> priority)</CODE>
831
832	<BR>
833	Set the priority of a job</TD>
834	</TR>
835	<TR BGCOLOR="white" CLASS="TableRowColor">
836	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
837	<CODE>static <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred">JobTracker</A></CODE></FONT></TD>
838	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#startTracker(org.apache.hadoop.mapred.JobConf)">startTracker</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> conf)</CODE>
839
840	<BR>
841	Start the JobTracker with given configuration.</TD>
842	</TR>
843	<TR BGCOLOR="white" CLASS="TableRowColor">
844	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
845	<CODE>static <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred">JobTracker</A></CODE></FONT></TD>
846	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#startTracker(org.apache.hadoop.mapred.JobConf, java.lang.String)">startTracker</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> conf,
847	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> identifier)</CODE>
848
849	<BR>
850	</TD>
851	</TR>
852	<TR BGCOLOR="white" CLASS="TableRowColor">
853	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
854	<CODE> void</CODE></FONT></TD>
855	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#stopTracker()">stopTracker</A></B>()</CODE>
856
857	<BR>
858	</TD>
859	</TR>
860	<TR BGCOLOR="white" CLASS="TableRowColor">
861	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
862	<CODE> <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A></CODE></FONT></TD>
863	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#submitJob(org.apache.hadoop.mapred.JobID)">submitJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobId)</CODE>
864
865	<BR>
866	JobTracker.submitJob() kicks off a new job.</TD>
867	</TR>
868	<TR BGCOLOR="white" CLASS="TableRowColor">
869	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
870	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>>></CODE></FONT></TD>
871	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#taskTrackerNames()">taskTrackerNames</A></B>()</CODE>
872
873	<BR>
874	Get the active and blacklisted task tracker names in the cluster.</TD>
875	</TR>
876	<TR BGCOLOR="white" CLASS="TableRowColor">
877	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
878	<CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus></CODE></FONT></TD>
879	<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#taskTrackers()">taskTrackers</A></B>()</CODE>
880
881	<BR>
882	Get all the task trackers in the cluster</TD>
883	</TR>
884	</TABLE>
885	<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
886	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
887	<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
888	<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
889	</TR>
890	<TR BGCOLOR="white" CLASS="TableRowColor">
891	<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
892	</TR>
893	</TABLE>
894
895	<P>
896
897	<!-- ============ FIELD DETAIL =========== -->
898
899	<A NAME="field_detail"><!-- --></A>
900	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
901	<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
902	<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
903	<B>Field Detail</B></FONT></TH>
904	</TR>
905	</TABLE>
906
907	<A NAME="LOG"><!-- --></A><H3>
908	LOG</H3>
909	<PRE>
910	public static final org.apache.commons.logging.Log <B>LOG</B></PRE>
911	<DL>
912	<DL>
913	</DL>
914	</DL>
915	<HR>
916
917	<A NAME="HEARTBEAT_INTERVAL_MIN"><!-- --></A><H3>
918	HEARTBEAT_INTERVAL_MIN</H3>
919	<PRE>
920	public static final int <B>HEARTBEAT_INTERVAL_MIN</B></PRE>
921	<DL>
922	<DL>
923	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.HEARTBEAT_INTERVAL_MIN">Constant Field Values</A></DL>
924	</DL>
925	<HR>
926
927	<A NAME="CLUSTER_INCREMENT"><!-- --></A><H3>
928	CLUSTER_INCREMENT</H3>
929	<PRE>
930	public static final int <B>CLUSTER_INCREMENT</B></PRE>
931	<DL>
932	<DL>
933	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.CLUSTER_INCREMENT">Constant Field Values</A></DL>
934	</DL>
935	<HR>
936
937	<A NAME="COUNTER_UPDATE_INTERVAL"><!-- --></A><H3>
938	COUNTER_UPDATE_INTERVAL</H3>
939	<PRE>
940	public static final long <B>COUNTER_UPDATE_INTERVAL</B></PRE>
941	<DL>
942	<DL>
943	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.COUNTER_UPDATE_INTERVAL">Constant Field Values</A></DL>
944	</DL>
945	<HR>
946
947	<A NAME="SUCCESS"><!-- --></A><H3>
948	SUCCESS</H3>
949	<PRE>
950	public static final int <B>SUCCESS</B></PRE>
951	<DL>
952	<DL>
953	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.SUCCESS">Constant Field Values</A></DL>
954	</DL>
955	<HR>
956
957	<A NAME="FILE_NOT_FOUND"><!-- --></A><H3>
958	FILE_NOT_FOUND</H3>
959	<PRE>
960	public static final int <B>FILE_NOT_FOUND</B></PRE>
961	<DL>
962	<DL>
963	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.FILE_NOT_FOUND">Constant Field Values</A></DL>
964	</DL>
965	<HR>
966
967	<A NAME="MAP_OUTPUT_LENGTH"><!-- --></A><H3>
968	MAP_OUTPUT_LENGTH</H3>
969	<PRE>
970	public static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>MAP_OUTPUT_LENGTH</B></PRE>
971	<DL>
972	<DD>The custom http header used for the map output length.
973	<P>
974	<DL>
975	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.MAP_OUTPUT_LENGTH">Constant Field Values</A></DL>
976	</DL>
977	<HR>
978
979	<A NAME="RAW_MAP_OUTPUT_LENGTH"><!-- --></A><H3>
980	RAW_MAP_OUTPUT_LENGTH</H3>
981	<PRE>
982	public static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>RAW_MAP_OUTPUT_LENGTH</B></PRE>
983	<DL>
984	<DD>The custom http header used for the "raw" map output length.
985	<P>
986	<DL>
987	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.RAW_MAP_OUTPUT_LENGTH">Constant Field Values</A></DL>
988	</DL>
989	<HR>
990
991	<A NAME="FROM_MAP_TASK"><!-- --></A><H3>
992	FROM_MAP_TASK</H3>
993	<PRE>
994	public static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>FROM_MAP_TASK</B></PRE>
995	<DL>
996	<DD>The map task from which the map output data is being transferred
997	<P>
998	<DL>
999	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.FROM_MAP_TASK">Constant Field Values</A></DL>
1000	</DL>
1001	<HR>
1002
1003	<A NAME="FOR_REDUCE_TASK"><!-- --></A><H3>
1004	FOR_REDUCE_TASK</H3>
1005	<PRE>
1006	public static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>FOR_REDUCE_TASK</B></PRE>
1007	<DL>
1008	<DD>The reduce task number for which this map output is being transferred
1009	<P>
1010	<DL>
1011	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.FOR_REDUCE_TASK">Constant Field Values</A></DL>
1012	</DL>
1013	<HR>
1014
1015	<A NAME="WORKDIR"><!-- --></A><H3>
1016	WORKDIR</H3>
1017	<PRE>
1018	public static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>WORKDIR</B></PRE>
1019	<DL>
1020	<DL>
1021	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.WORKDIR">Constant Field Values</A></DL>
1022	</DL>
1023	<HR>
1024
1025	<A NAME="versionID"><!-- --></A><H3>
1026	versionID</H3>
1027	<PRE>
1028	public static final long <B>versionID</B></PRE>
1029	<DL>
1030	<DD>version 3 introduced to replace
1031	emitHearbeat/pollForNewTask/pollForTaskWithClosedJob with
1032	<A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus, boolean, boolean, boolean, short)"><CODE>heartbeat(TaskTrackerStatus, boolean, boolean, boolean, short)</CODE></A>
1033	version 4 changed TaskReport for HADOOP-549.
1034	version 5 introduced that removes locateMapOutputs and instead uses
1035	getTaskCompletionEvents to figure finished maps and fetch the outputs
1036	version 6 adds maxTasks to TaskTrackerStatus for HADOOP-1245
1037	version 7 replaces maxTasks by maxMapTasks and maxReduceTasks in
1038	TaskTrackerStatus for HADOOP-1274
1039	Version 8: HeartbeatResponse is added with the next heartbeat interval.
1040	version 9 changes the counter representation for HADOOP-2248
1041	version 10 changes the TaskStatus representation for HADOOP-2208
1042	version 11 changes string to JobID in getTaskCompletionEvents().
1043	version 12 changes the counters representation for HADOOP-1915
1044	version 13 added call getBuildVersion() for HADOOP-236
1045	Version 14: replaced getFilesystemName with getSystemDir for HADOOP-3135
1046	Version 15: Changed format of Task and TaskStatus for HADOOP-153
1047	Version 16: adds ResourceStatus to TaskTrackerStatus for HADOOP-3759
1048	Version 17: Changed format of Task and TaskStatus for HADOOP-3150
1049	Version 18: Changed status message due to changes in TaskStatus
1050	Version 19: Changed heartbeat to piggyback JobTracker restart information
1051	so that the TaskTracker can synchronize itself.
1052	Version 20: Changed status message due to changes in TaskStatus
1053	(HADOOP-4232)
1054	Version 21: Changed information reported in TaskTrackerStatus'
1055	ResourceStatus and the corresponding accessor methods
1056	(HADOOP-4035)
1057	Version 22: Replaced parameter 'initialContact' with 'restarted'
1058	in heartbeat method (HADOOP-4305)
1059	Version 23: Added parameter 'initialContact' again in heartbeat method
1060	(HADOOP-4869)
1061	Version 24: Changed format of Task and TaskStatus for HADOOP-4759
1062	Version 25: JobIDs are passed in response to JobTracker restart
1063	<P>
1064	<DL>
1065	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.versionID">Constant Field Values</A></DL>
1066	</DL>
1067	<HR>
1068
1069	<A NAME="TRACKERS_OK"><!-- --></A><H3>
1070	TRACKERS_OK</H3>
1071	<PRE>
1072	public static final int <B>TRACKERS_OK</B></PRE>
1073	<DL>
1074	<DL>
1075	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.TRACKERS_OK">Constant Field Values</A></DL>
1076	</DL>
1077	<HR>
1078
1079	<A NAME="UNKNOWN_TASKTRACKER"><!-- --></A><H3>
1080	UNKNOWN_TASKTRACKER</H3>
1081	<PRE>
1082	public static final int <B>UNKNOWN_TASKTRACKER</B></PRE>
1083	<DL>
1084	<DL>
1085	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.UNKNOWN_TASKTRACKER">Constant Field Values</A></DL>
1086	</DL>
1087	<HR>
1088
1089	<A NAME="versionID"><!-- --></A><H3>
1090	versionID</H3>
1091	<PRE>
1092	public static final long <B>versionID</B></PRE>
1093	<DL>
1094	<DL>
1095	<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapred.JobTracker.versionID">Constant Field Values</A></DL>
1096	</DL>
1097
1098	<!-- ============ METHOD DETAIL ========== -->
1099
1100	<A NAME="method_detail"><!-- --></A>
1101	<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
1102	<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
1103	<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
1104	<B>Method Detail</B></FONT></TH>
1105	</TR>
1106	</TABLE>
1107
1108	<A NAME="startTracker(org.apache.hadoop.mapred.JobConf)"><!-- --></A><H3>
1109	startTracker</H3>
1110	<PRE>
1111	public static <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred">JobTracker</A> <B>startTracker</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> conf)
1112	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A>,
1113	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
1114	<DL>
1115	<DD>Start the JobTracker with given configuration.
1116
1117	The conf will be modified to reflect the actual ports on which
1118	the JobTracker is up and running if the user passes the port as
1119	<code>zero</code>.
1120	<P>
1121	<DD><DL>
1122	</DL>
1123	</DD>
1124	<DD><DL>
1125	<DT><B>Parameters:</B><DD><CODE>conf</CODE> - configuration for the JobTracker.
1126	<DT><B>Throws:</B>
1127	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE>
1128	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
1129	</DD>
1130	</DL>
1131	<HR>
1132
1133	<A NAME="startTracker(org.apache.hadoop.mapred.JobConf, java.lang.String)"><!-- --></A><H3>
1134	startTracker</H3>
1135	<PRE>
1136	public static <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred">JobTracker</A> <B>startTracker</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> conf,
1137	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> identifier)
1138	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A>,
1139	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
1140	<DL>
1141	<DD><DL>
1142	</DL>
1143	</DD>
1144	<DD><DL>
1145
1146	<DT><B>Throws:</B>
1147	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE>
1148	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
1149	</DD>
1150	</DL>
1151	<HR>
1152
1153	<A NAME="stopTracker()"><!-- --></A><H3>
1154	stopTracker</H3>
1155	<PRE>
1156	public void <B>stopTracker</B>()
1157	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1158	<DL>
1159	<DD><DL>
1160	</DL>
1161	</DD>
1162	<DD><DL>
1163
1164	<DT><B>Throws:</B>
1165	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1166	</DD>
1167	</DL>
1168	<HR>
1169
1170	<A NAME="getProtocolVersion(java.lang.String, long)"><!-- --></A><H3>
1171	getProtocolVersion</H3>
1172	<PRE>
1173	public long <B>getProtocolVersion</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> protocol,
1174	long clientVersion)
1175	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1176	<DL>
1177	<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/ipc/VersionedProtocol.html#getProtocolVersion(java.lang.String, long)">VersionedProtocol</A></CODE></B></DD>
1178	<DD>Return protocol version corresponding to protocol interface.
1179	<P>
1180	<DD><DL>
1181	<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/ipc/VersionedProtocol.html#getProtocolVersion(java.lang.String, long)">getProtocolVersion</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/ipc/VersionedProtocol.html" title="interface in org.apache.hadoop.ipc">VersionedProtocol</A></CODE></DL>
1182	</DD>
1183	<DD><DL>
1184	<DT><B>Parameters:</B><DD><CODE>protocol</CODE> - The classname of the protocol interface<DD><CODE>clientVersion</CODE> - The version of the protocol that the client speaks
1185	<DT><B>Returns:</B><DD>the version that the server will speak
1186	<DT><B>Throws:</B>
1187	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1188	</DD>
1189	</DL>
1190	<HR>
1191
1192	<A NAME="hasRestarted()"><!-- --></A><H3>
1193	hasRestarted</H3>
1194	<PRE>
1195	public boolean <B>hasRestarted</B>()</PRE>
1196	<DL>
1197	<DD>Whether the JT has restarted
1198	<P>
1199	<DD><DL>
1200	</DL>
1201	</DD>
1202	<DD><DL>
1203	</DL>
1204	</DD>
1205	</DL>
1206	<HR>
1207
1208	<A NAME="hasRecovered()"><!-- --></A><H3>
1209	hasRecovered</H3>
1210	<PRE>
1211	public boolean <B>hasRecovered</B>()</PRE>
1212	<DL>
1213	<DD>Whether the JT has recovered upon restart
1214	<P>
1215	<DD><DL>
1216	</DL>
1217	</DD>
1218	<DD><DL>
1219	</DL>
1220	</DD>
1221	</DL>
1222	<HR>
1223
1224	<A NAME="getRecoveryDuration()"><!-- --></A><H3>
1225	getRecoveryDuration</H3>
1226	<PRE>
1227	public long <B>getRecoveryDuration</B>()</PRE>
1228	<DL>
1229	<DD>How long the jobtracker took to recover from restart.
1230	<P>
1231	<DD><DL>
1232	</DL>
1233	</DD>
1234	<DD><DL>
1235	</DL>
1236	</DD>
1237	</DL>
1238	<HR>
1239
1240	<A NAME="getInstrumentationClass(org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
1241	getInstrumentationClass</H3>
1242	<PRE>
1243	public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends org.apache.hadoop.mapred.JobTrackerInstrumentation> <B>getInstrumentationClass</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</PRE>
1244	<DL>
1245	<DD><DL>
1246	</DL>
1247	</DD>
1248	<DD><DL>
1249	</DL>
1250	</DD>
1251	</DL>
1252	<HR>
1253
1254	<A NAME="setInstrumentationClass(org.apache.hadoop.conf.Configuration, java.lang.Class)"><!-- --></A><H3>
1255	setInstrumentationClass</H3>
1256	<PRE>
1257	public static void <B>setInstrumentationClass</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf,
1258	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends org.apache.hadoop.mapred.JobTrackerInstrumentation> t)</PRE>
1259	<DL>
1260	<DD><DL>
1261	</DL>
1262	</DD>
1263	<DD><DL>
1264	</DL>
1265	</DD>
1266	</DL>
1267	<HR>
1268
1269	<A NAME="getAddress(org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
1270	getAddress</H3>
1271	<PRE>
1272	public static <A HREF="http://java.sun.com/javase/6/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</A> <B>getAddress</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</PRE>
1273	<DL>
1274	<DD><DL>
1275	</DL>
1276	</DD>
1277	<DD><DL>
1278	</DL>
1279	</DD>
1280	</DL>
1281	<HR>
1282
1283	<A NAME="offerService()"><!-- --></A><H3>
1284	offerService</H3>
1285	<PRE>
1286	public void <B>offerService</B>()
1287	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A>,
1288	<A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1289	<DL>
1290	<DD>Run forever
1291	<P>
1292	<DD><DL>
1293	</DL>
1294	</DD>
1295	<DD><DL>
1296
1297	<DT><B>Throws:</B>
1298	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE>
1299	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1300	</DD>
1301	</DL>
1302	<HR>
1303
1304	<A NAME="getTotalSubmissions()"><!-- --></A><H3>
1305	getTotalSubmissions</H3>
1306	<PRE>
1307	public int <B>getTotalSubmissions</B>()</PRE>
1308	<DL>
1309	<DD><DL>
1310	</DL>
1311	</DD>
1312	<DD><DL>
1313	</DL>
1314	</DD>
1315	</DL>
1316	<HR>
1317
1318	<A NAME="getJobTrackerMachine()"><!-- --></A><H3>
1319	getJobTrackerMachine</H3>
1320	<PRE>
1321	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getJobTrackerMachine</B>()</PRE>
1322	<DL>
1323	<DD><DL>
1324	</DL>
1325	</DD>
1326	<DD><DL>
1327	</DL>
1328	</DD>
1329	</DL>
1330	<HR>
1331
1332	<A NAME="getTrackerIdentifier()"><!-- --></A><H3>
1333	getTrackerIdentifier</H3>
1334	<PRE>
1335	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getTrackerIdentifier</B>()</PRE>
1336	<DL>
1337	<DD>Get the unique identifier (ie. timestamp) of this job tracker start.
1338	<P>
1339	<DD><DL>
1340	</DL>
1341	</DD>
1342	<DD><DL>
1343
1344	<DT><B>Returns:</B><DD>a string with a unique identifier</DL>
1345	</DD>
1346	</DL>
1347	<HR>
1348
1349	<A NAME="getTrackerPort()"><!-- --></A><H3>
1350	getTrackerPort</H3>
1351	<PRE>
1352	public int <B>getTrackerPort</B>()</PRE>
1353	<DL>
1354	<DD><DL>
1355	</DL>
1356	</DD>
1357	<DD><DL>
1358	</DL>
1359	</DD>
1360	</DL>
1361	<HR>
1362
1363	<A NAME="getInfoPort()"><!-- --></A><H3>
1364	getInfoPort</H3>
1365	<PRE>
1366	public int <B>getInfoPort</B>()</PRE>
1367	<DL>
1368	<DD><DL>
1369	</DL>
1370	</DD>
1371	<DD><DL>
1372	</DL>
1373	</DD>
1374	</DL>
1375	<HR>
1376
1377	<A NAME="getStartTime()"><!-- --></A><H3>
1378	getStartTime</H3>
1379	<PRE>
1380	public long <B>getStartTime</B>()</PRE>
1381	<DL>
1382	<DD><DL>
1383	</DL>
1384	</DD>
1385	<DD><DL>
1386	</DL>
1387	</DD>
1388	</DL>
1389	<HR>
1390
1391	<A NAME="runningJobs()"><!-- --></A><H3>
1392	runningJobs</H3>
1393	<PRE>
1394	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress> <B>runningJobs</B>()</PRE>
1395	<DL>
1396	<DD><DL>
1397	</DL>
1398	</DD>
1399	<DD><DL>
1400	</DL>
1401	</DD>
1402	</DL>
1403	<HR>
1404
1405	<A NAME="getRunningJobs()"><!-- --></A><H3>
1406	getRunningJobs</H3>
1407	<PRE>
1408	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><org.apache.hadoop.mapred.JobInProgress> <B>getRunningJobs</B>()</PRE>
1409	<DL>
1410	<DD>Version that is called from a timer thread, and therefore needs to be
1411	careful to synchronize.
1412	<P>
1413	<DD><DL>
1414	</DL>
1415	</DD>
1416	<DD><DL>
1417	</DL>
1418	</DD>
1419	</DL>
1420	<HR>
1421
1422	<A NAME="failedJobs()"><!-- --></A><H3>
1423	failedJobs</H3>
1424	<PRE>
1425	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress> <B>failedJobs</B>()</PRE>
1426	<DL>
1427	<DD><DL>
1428	</DL>
1429	</DD>
1430	<DD><DL>
1431	</DL>
1432	</DD>
1433	</DL>
1434	<HR>
1435
1436	<A NAME="completedJobs()"><!-- --></A><H3>
1437	completedJobs</H3>
1438	<PRE>
1439	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</A><org.apache.hadoop.mapred.JobInProgress> <B>completedJobs</B>()</PRE>
1440	<DL>
1441	<DD><DL>
1442	</DL>
1443	</DD>
1444	<DD><DL>
1445	</DL>
1446	</DD>
1447	</DL>
1448	<HR>
1449
1450	<A NAME="taskTrackers()"><!-- --></A><H3>
1451	taskTrackers</H3>
1452	<PRE>
1453	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus> <B>taskTrackers</B>()</PRE>
1454	<DL>
1455	<DD>Get all the task trackers in the cluster
1456	<P>
1457	<DD><DL>
1458	</DL>
1459	</DD>
1460	<DD><DL>
1461
1462	<DT><B>Returns:</B><DD><A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util"><CODE>Collection</CODE></A> of <CODE>TaskTrackerStatus</CODE></DL>
1463	</DD>
1464	</DL>
1465	<HR>
1466
1467	<A NAME="activeTaskTrackers()"><!-- --></A><H3>
1468	activeTaskTrackers</H3>
1469	<PRE>
1470	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus> <B>activeTaskTrackers</B>()</PRE>
1471	<DL>
1472	<DD>Get the active task tracker statuses in the cluster
1473	<P>
1474	<DD><DL>
1475	</DL>
1476	</DD>
1477	<DD><DL>
1478
1479	<DT><B>Returns:</B><DD><A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util"><CODE>Collection</CODE></A> of active <CODE>TaskTrackerStatus</CODE></DL>
1480	</DD>
1481	</DL>
1482	<HR>
1483
1484	<A NAME="taskTrackerNames()"><!-- --></A><H3>
1485	taskTrackerNames</H3>
1486	<PRE>
1487	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>>> <B>taskTrackerNames</B>()</PRE>
1488	<DL>
1489	<DD>Get the active and blacklisted task tracker names in the cluster. The first
1490	element in the returned list contains the list of active tracker names.
1491	The second element in the returned list contains the list of blacklisted
1492	tracker names.
1493	<P>
1494	<DD><DL>
1495	</DL>
1496	</DD>
1497	<DD><DL>
1498	</DL>
1499	</DD>
1500	</DL>
1501	<HR>
1502
1503	<A NAME="blacklistedTaskTrackers()"><!-- --></A><H3>
1504	blacklistedTaskTrackers</H3>
1505	<PRE>
1506	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><org.apache.hadoop.mapred.TaskTrackerStatus> <B>blacklistedTaskTrackers</B>()</PRE>
1507	<DL>
1508	<DD>Get the blacklisted task tracker statuses in the cluster
1509	<P>
1510	<DD><DL>
1511	</DL>
1512	</DD>
1513	<DD><DL>
1514
1515	<DT><B>Returns:</B><DD><A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util"><CODE>Collection</CODE></A> of blacklisted <CODE>TaskTrackerStatus</CODE></DL>
1516	</DD>
1517	</DL>
1518	<HR>
1519
1520	<A NAME="isBlacklisted(java.lang.String)"><!-- --></A><H3>
1521	isBlacklisted</H3>
1522	<PRE>
1523	public boolean <B>isBlacklisted</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> trackerID)</PRE>
1524	<DL>
1525	<DD>Whether the tracker is blacklisted or not
1526	<P>
1527	<DD><DL>
1528	</DL>
1529	</DD>
1530	<DD><DL>
1531	<DT><B>Parameters:</B><DD><CODE>trackerID</CODE> -
1532	<DT><B>Returns:</B><DD>true if blacklisted, false otherwise</DL>
1533	</DD>
1534	</DL>
1535	<HR>
1536
1537	<A NAME="getTaskTracker(java.lang.String)"><!-- --></A><H3>
1538	getTaskTracker</H3>
1539	<PRE>
1540	public org.apache.hadoop.mapred.TaskTrackerStatus <B>getTaskTracker</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> trackerID)</PRE>
1541	<DL>
1542	<DD><DL>
1543	</DL>
1544	</DD>
1545	<DD><DL>
1546	</DL>
1547	</DD>
1548	</DL>
1549	<HR>
1550
1551	<A NAME="resolveAndAddToTopology(java.lang.String)"><!-- --></A><H3>
1552	resolveAndAddToTopology</H3>
1553	<PRE>
1554	public <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> <B>resolveAndAddToTopology</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</PRE>
1555	<DL>
1556	<DD><DL>
1557	</DL>
1558	</DD>
1559	<DD><DL>
1560	</DL>
1561	</DD>
1562	</DL>
1563	<HR>
1564
1565	<A NAME="getNodesAtMaxLevel()"><!-- --></A><H3>
1566	getNodesAtMaxLevel</H3>
1567	<PRE>
1568	public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A>> <B>getNodesAtMaxLevel</B>()</PRE>
1569	<DL>
1570	<DD>Returns a collection of nodes at the max level
1571	<P>
1572	<DD><DL>
1573	</DL>
1574	</DD>
1575	<DD><DL>
1576	</DL>
1577	</DD>
1578	</DL>
1579	<HR>
1580
1581	<A NAME="getParentNode(org.apache.hadoop.net.Node, int)"><!-- --></A><H3>
1582	getParentNode</H3>
1583	<PRE>
1584	public static <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> <B>getParentNode</B>(<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> node,
1585	int level)</PRE>
1586	<DL>
1587	<DD><DL>
1588	</DL>
1589	</DD>
1590	<DD><DL>
1591	</DL>
1592	</DD>
1593	</DL>
1594	<HR>
1595
1596	<A NAME="getNode(java.lang.String)"><!-- --></A><H3>
1597	getNode</H3>
1598	<PRE>
1599	public <A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> <B>getNode</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</PRE>
1600	<DL>
1601	<DD>Return the Node in the network topology that corresponds to the hostname
1602	<P>
1603	<DD><DL>
1604	</DL>
1605	</DD>
1606	<DD><DL>
1607	</DL>
1608	</DD>
1609	</DL>
1610	<HR>
1611
1612	<A NAME="getNumTaskCacheLevels()"><!-- --></A><H3>
1613	getNumTaskCacheLevels</H3>
1614	<PRE>
1615	public int <B>getNumTaskCacheLevels</B>()</PRE>
1616	<DL>
1617	<DD><DL>
1618	</DL>
1619	</DD>
1620	<DD><DL>
1621	</DL>
1622	</DD>
1623	</DL>
1624	<HR>
1625
1626	<A NAME="getNumResolvedTaskTrackers()"><!-- --></A><H3>
1627	getNumResolvedTaskTrackers</H3>
1628	<PRE>
1629	public int <B>getNumResolvedTaskTrackers</B>()</PRE>
1630	<DL>
1631	<DD><DL>
1632	</DL>
1633	</DD>
1634	<DD><DL>
1635	</DL>
1636	</DD>
1637	</DL>
1638	<HR>
1639
1640	<A NAME="getNumberOfUniqueHosts()"><!-- --></A><H3>
1641	getNumberOfUniqueHosts</H3>
1642	<PRE>
1643	public int <B>getNumberOfUniqueHosts</B>()</PRE>
1644	<DL>
1645	<DD><DL>
1646	</DL>
1647	</DD>
1648	<DD><DL>
1649
1650	<DT><B>Returns:</B><DD>The number of unique hosts running tasktrackers.</DL>
1651	</DD>
1652	</DL>
1653	<HR>
1654
1655	<A NAME="addJobInProgressListener(org.apache.hadoop.mapred.JobInProgressListener)"><!-- --></A><H3>
1656	addJobInProgressListener</H3>
1657	<PRE>
1658	public void <B>addJobInProgressListener</B>(org.apache.hadoop.mapred.JobInProgressListener listener)</PRE>
1659	<DL>
1660	<DD>Registers a <CODE>JobInProgressListener</CODE> for updates from this
1661	<CODE>TaskTrackerManager</CODE>.
1662	<P>
1663	<DD><DL>
1664	</DL>
1665	</DD>
1666	<DD><DL>
1667	</DL>
1668	</DD>
1669	</DL>
1670	<HR>
1671
1672	<A NAME="removeJobInProgressListener(org.apache.hadoop.mapred.JobInProgressListener)"><!-- --></A><H3>
1673	removeJobInProgressListener</H3>
1674	<PRE>
1675	public void <B>removeJobInProgressListener</B>(org.apache.hadoop.mapred.JobInProgressListener listener)</PRE>
1676	<DL>
1677	<DD>Unregisters a <CODE>JobInProgressListener</CODE> from this
1678	<CODE>TaskTrackerManager</CODE>.
1679	<P>
1680	<DD><DL>
1681	</DL>
1682	</DD>
1683	<DD><DL>
1684	</DL>
1685	</DD>
1686	</DL>
1687	<HR>
1688
1689	<A NAME="getQueueManager()"><!-- --></A><H3>
1690	getQueueManager</H3>
1691	<PRE>
1692	public org.apache.hadoop.mapred.QueueManager <B>getQueueManager</B>()</PRE>
1693	<DL>
1694	<DD>Return the <CODE>QueueManager</CODE> associated with the JobTracker.
1695	<P>
1696	<DD><DL>
1697	</DL>
1698	</DD>
1699	<DD><DL>
1700
1701	<DT><B>Returns:</B><DD>the <CODE>QueueManager</CODE></DL>
1702	</DD>
1703	</DL>
1704	<HR>
1705
1706	<A NAME="getBuildVersion()"><!-- --></A><H3>
1707	getBuildVersion</H3>
1708	<PRE>
1709	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getBuildVersion</B>()
1710	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1711	<DL>
1712	<DD>Returns the buildVersion of the JobTracker
1713	<P>
1714	<DD><DL>
1715	</DL>
1716	</DD>
1717	<DD><DL>
1718
1719	<DT><B>Throws:</B>
1720	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1721	</DD>
1722	</DL>
1723	<HR>
1724
1725	<A NAME="heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus, boolean, boolean, boolean, short)"><!-- --></A><H3>
1726	heartbeat</H3>
1727	<PRE>
1728	public org.apache.hadoop.mapred.HeartbeatResponse <B>heartbeat</B>(org.apache.hadoop.mapred.TaskTrackerStatus status,
1729	boolean restarted,
1730	boolean initialContact,
1731	boolean acceptNewTasks,
1732	short responseId)
1733	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1734	<DL>
1735	<DD>The periodic heartbeat mechanism between the <A HREF="../../../../org/apache/hadoop/mapred/TaskTracker.html" title="class in org.apache.hadoop.mapred"><CODE>TaskTracker</CODE></A> and
1736	the <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred"><CODE>JobTracker</CODE></A>.
1737
1738	The <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html" title="class in org.apache.hadoop.mapred"><CODE>JobTracker</CODE></A> processes the status information sent by the
1739	<A HREF="../../../../org/apache/hadoop/mapred/TaskTracker.html" title="class in org.apache.hadoop.mapred"><CODE>TaskTracker</CODE></A> and responds with instructions to start/stop
1740	tasks or jobs, and also 'reset' instructions during contingencies.
1741	<P>
1742	<DD><DL>
1743	</DL>
1744	</DD>
1745	<DD><DL>
1746	<DT><B>Parameters:</B><DD><CODE>status</CODE> - the status update<DD><CODE>restarted</CODE> - <code>true</code> if the process has just started or
1747	restarted, <code>false</code> otherwise<DD><CODE>initialContact</CODE> - <code>true</code> if this is first interaction since
1748	'refresh', <code>false</code> otherwise.<DD><CODE>acceptNewTasks</CODE> - <code>true</code> if the <A HREF="../../../../org/apache/hadoop/mapred/TaskTracker.html" title="class in org.apache.hadoop.mapred"><CODE>TaskTracker</CODE></A> is
1749	ready to accept new tasks to run.<DD><CODE>responseId</CODE> - the last responseId successfully acted upon by the
1750	<A HREF="../../../../org/apache/hadoop/mapred/TaskTracker.html" title="class in org.apache.hadoop.mapred"><CODE>TaskTracker</CODE></A>.
1751	<DT><B>Returns:</B><DD>a <CODE>HeartbeatResponse</CODE> with
1752	fresh instructions.
1753	<DT><B>Throws:</B>
1754	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1755	</DD>
1756	</DL>
1757	<HR>
1758
1759	<A NAME="getNextHeartbeatInterval()"><!-- --></A><H3>
1760	getNextHeartbeatInterval</H3>
1761	<PRE>
1762	public int <B>getNextHeartbeatInterval</B>()</PRE>
1763	<DL>
1764	<DD>Calculates next heartbeat interval using cluster size.
1765	Heartbeat interval is incremented 1second for every 50 nodes.
1766	<P>
1767	<DD><DL>
1768	</DL>
1769	</DD>
1770	<DD><DL>
1771
1772	<DT><B>Returns:</B><DD>next heartbeat interval.</DL>
1773	</DD>
1774	</DL>
1775	<HR>
1776
1777	<A NAME="getFilesystemName()"><!-- --></A><H3>
1778	getFilesystemName</H3>
1779	<PRE>
1780	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getFilesystemName</B>()
1781	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1782	<DL>
1783	<DD>Grab the local fs name
1784	<P>
1785	<DD><DL>
1786	</DL>
1787	</DD>
1788	<DD><DL>
1789
1790	<DT><B>Throws:</B>
1791	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1792	</DD>
1793	</DL>
1794	<HR>
1795
1796	<A NAME="reportTaskTrackerError(java.lang.String, java.lang.String, java.lang.String)"><!-- --></A><H3>
1797	reportTaskTrackerError</H3>
1798	<PRE>
1799	public void <B>reportTaskTrackerError</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> taskTracker,
1800	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> errorClass,
1801	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> errorMessage)
1802	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1803	<DL>
1804	<DD>Report a problem to the job tracker.
1805	<P>
1806	<DD><DL>
1807	</DL>
1808	</DD>
1809	<DD><DL>
1810	<DT><B>Parameters:</B><DD><CODE>taskTracker</CODE> - the name of the task tracker<DD><CODE>errorClass</CODE> - the kind of error (eg. the class that was thrown)<DD><CODE>errorMessage</CODE> - the human readable error message
1811	<DT><B>Throws:</B>
1812	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if there was a problem in communication or on the
1813	remote side</DL>
1814	</DD>
1815	</DL>
1816	<HR>
1817
1818	<A NAME="getNewJobId()"><!-- --></A><H3>
1819	getNewJobId</H3>
1820	<PRE>
1821	public <A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> <B>getNewJobId</B>()
1822	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1823	<DL>
1824	<DD>Allocates a new JobId string.
1825	<P>
1826	<DD><DL>
1827	</DL>
1828	</DD>
1829	<DD><DL>
1830
1831	<DT><B>Returns:</B><DD>a unique job name for submitting jobs.
1832	<DT><B>Throws:</B>
1833	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1834	</DD>
1835	</DL>
1836	<HR>
1837
1838	<A NAME="submitJob(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
1839	submitJob</H3>
1840	<PRE>
1841	public <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A> <B>submitJob</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobId)
1842	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1843	<DL>
1844	<DD>JobTracker.submitJob() kicks off a new job.
1845
1846	Create a 'JobInProgress' object, which contains both JobProfile
1847	and JobStatus. Those two sub-objects are sometimes shipped outside
1848	of the JobTracker. But JobInProgress adds info that's useful for
1849	the JobTracker alone.
1850	<P>
1851	<DD><DL>
1852	</DL>
1853	</DD>
1854	<DD><DL>
1855
1856	<DT><B>Throws:</B>
1857	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1858	</DD>
1859	</DL>
1860	<HR>
1861
1862	<A NAME="getClusterStatus()"><!-- --></A><H3>
1863	getClusterStatus</H3>
1864	<PRE>
1865	<FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
1866	</FONT>public <A HREF="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</A> <B>getClusterStatus</B>()</PRE>
1867	<DL>
1868	<DD><B>Deprecated.</B> <I>use <A HREF="../../../../org/apache/hadoop/mapred/JobTracker.html#getClusterStatus(boolean)"><CODE>getClusterStatus(boolean)</CODE></A></I>
1869	<P>
1870	<DD><DL>
1871	</DL>
1872	</DD>
1873	<DD><DL>
1874
1875	<DT><B>Returns:</B><DD>a summary of the cluster's status.</DL>
1876	</DD>
1877	</DL>
1878	<HR>
1879
1880	<A NAME="getClusterStatus(boolean)"><!-- --></A><H3>
1881	getClusterStatus</H3>
1882	<PRE>
1883	public <A HREF="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</A> <B>getClusterStatus</B>(boolean detailed)</PRE>
1884	<DL>
1885	<DD>Get the current status of the cluster
1886	<P>
1887	<DD><DL>
1888	</DL>
1889	</DD>
1890	<DD><DL>
1891	<DT><B>Parameters:</B><DD><CODE>detailed</CODE> - if true then report tracker names as well
1892	<DT><B>Returns:</B><DD>summary of the state of the cluster</DL>
1893	</DD>
1894	</DL>
1895	<HR>
1896
1897	<A NAME="killJob(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
1898	killJob</H3>
1899	<PRE>
1900	public void <B>killJob</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)
1901	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1902	<DL>
1903	<DD>Kill the indicated job
1904	<P>
1905	<DD><DL>
1906	</DL>
1907	</DD>
1908	<DD><DL>
1909
1910	<DT><B>Throws:</B>
1911	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1912	</DD>
1913	</DL>
1914	<HR>
1915
1916	<A NAME="initJob(org.apache.hadoop.mapred.JobInProgress)"><!-- --></A><H3>
1917	initJob</H3>
1918	<PRE>
1919	public void <B>initJob</B>(org.apache.hadoop.mapred.JobInProgress job)</PRE>
1920	<DL>
1921	<DD>Initialize the Job
1922	<P>
1923	<DD><DL>
1924	</DL>
1925	</DD>
1926	<DD><DL>
1927	<DT><B>Parameters:</B><DD><CODE>job</CODE> - JobInProgress object</DL>
1928	</DD>
1929	</DL>
1930	<HR>
1931
1932	<A NAME="failJob(org.apache.hadoop.mapred.JobInProgress)"><!-- --></A><H3>
1933	failJob</H3>
1934	<PRE>
1935	public void <B>failJob</B>(org.apache.hadoop.mapred.JobInProgress job)</PRE>
1936	<DL>
1937	<DD>Fail a job and inform the listeners. Other components in the framework
1938	should use this to fail a job.
1939	<P>
1940	<DD><DL>
1941	</DL>
1942	</DD>
1943	<DD><DL>
1944	<DT><B>Parameters:</B><DD><CODE>job</CODE> - JobInProgress object</DL>
1945	</DD>
1946	</DL>
1947	<HR>
1948
1949	<A NAME="setJobPriority(org.apache.hadoop.mapred.JobID, java.lang.String)"><!-- --></A><H3>
1950	setJobPriority</H3>
1951	<PRE>
1952	public void <B>setJobPriority</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid,
1953	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> priority)
1954	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
1955	<DL>
1956	<DD>Set the priority of a job
1957	<P>
1958	<DD><DL>
1959	</DL>
1960	</DD>
1961	<DD><DL>
1962	<DT><B>Parameters:</B><DD><CODE>jobid</CODE> - id of the job<DD><CODE>priority</CODE> - new priority of the job
1963	<DT><B>Throws:</B>
1964	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
1965	</DD>
1966	</DL>
1967	<HR>
1968
1969	<A NAME="getJobProfile(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
1970	getJobProfile</H3>
1971	<PRE>
1972	public <A HREF="../../../../org/apache/hadoop/mapred/JobProfile.html" title="class in org.apache.hadoop.mapred">JobProfile</A> <B>getJobProfile</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
1973	<DL>
1974	<DD>Grab a handle to a job that is already known to the JobTracker.
1975	<P>
1976	<DD><DL>
1977	</DL>
1978	</DD>
1979	<DD><DL>
1980
1981	<DT><B>Returns:</B><DD>Profile of the job, or null if not found.</DL>
1982	</DD>
1983	</DL>
1984	<HR>
1985
1986	<A NAME="getJobStatus(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
1987	getJobStatus</H3>
1988	<PRE>
1989	public <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A> <B>getJobStatus</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
1990	<DL>
1991	<DD>Grab a handle to a job that is already known to the JobTracker.
1992	<P>
1993	<DD><DL>
1994	</DL>
1995	</DD>
1996	<DD><DL>
1997
1998	<DT><B>Returns:</B><DD>Status of the job, or null if not found.</DL>
1999	</DD>
2000	</DL>
2001	<HR>
2002
2003	<A NAME="getJobCounters(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2004	getJobCounters</H3>
2005	<PRE>
2006	public <A HREF="../../../../org/apache/hadoop/mapred/Counters.html" title="class in org.apache.hadoop.mapred">Counters</A> <B>getJobCounters</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2007	<DL>
2008	<DD>Grab the current job counters
2009	<P>
2010	<DD><DL>
2011	</DL>
2012	</DD>
2013	<DD><DL>
2014	</DL>
2015	</DD>
2016	</DL>
2017	<HR>
2018
2019	<A NAME="getMapTaskReports(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2020	getMapTaskReports</H3>
2021	<PRE>
2022	public <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[] <B>getMapTaskReports</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2023	<DL>
2024	<DD>Grab a bunch of info on the map tasks that make up the job
2025	<P>
2026	<DD><DL>
2027	</DL>
2028	</DD>
2029	<DD><DL>
2030	</DL>
2031	</DD>
2032	</DL>
2033	<HR>
2034
2035	<A NAME="getReduceTaskReports(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2036	getReduceTaskReports</H3>
2037	<PRE>
2038	public <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[] <B>getReduceTaskReports</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2039	<DL>
2040	<DD>Grab a bunch of info on the reduce tasks that make up the job
2041	<P>
2042	<DD><DL>
2043	</DL>
2044	</DD>
2045	<DD><DL>
2046	</DL>
2047	</DD>
2048	</DL>
2049	<HR>
2050
2051	<A NAME="getCleanupTaskReports(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2052	getCleanupTaskReports</H3>
2053	<PRE>
2054	public <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[] <B>getCleanupTaskReports</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2055	<DL>
2056	<DD>Grab a bunch of info on the cleanup tasks that make up the job
2057	<P>
2058	<DD><DL>
2059	</DL>
2060	</DD>
2061	<DD><DL>
2062	</DL>
2063	</DD>
2064	</DL>
2065	<HR>
2066
2067	<A NAME="getSetupTaskReports(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2068	getSetupTaskReports</H3>
2069	<PRE>
2070	public <A HREF="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</A>[] <B>getSetupTaskReports</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2071	<DL>
2072	<DD>Grab a bunch of info on the setup tasks that make up the job
2073	<P>
2074	<DD><DL>
2075	</DL>
2076	</DD>
2077	<DD><DL>
2078	</DL>
2079	</DD>
2080	</DL>
2081	<HR>
2082
2083	<A NAME="getTaskCompletionEvents(org.apache.hadoop.mapred.JobID, int, int)"><!-- --></A><H3>
2084	getTaskCompletionEvents</H3>
2085	<PRE>
2086	public <A HREF="../../../../org/apache/hadoop/mapred/TaskCompletionEvent.html" title="class in org.apache.hadoop.mapred">TaskCompletionEvent</A>[] <B>getTaskCompletionEvents</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid,
2087	int fromEventId,
2088	int maxEvents)
2089	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2090	<DL>
2091	<DD>Get task completion events for the jobid, starting from fromEventId.
2092	Returns empty aray if no events are available.
2093	<P>
2094	<DD><DL>
2095	</DL>
2096	</DD>
2097	<DD><DL>
2098	<DT><B>Parameters:</B><DD><CODE>jobid</CODE> - job id<DD><CODE>fromEventId</CODE> - event id to start from.<DD><CODE>maxEvents</CODE> - the max number of events we want to look at
2099	<DT><B>Returns:</B><DD>array of task completion events.
2100	<DT><B>Throws:</B>
2101	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2102	</DD>
2103	</DL>
2104	<HR>
2105
2106	<A NAME="getTaskDiagnostics(org.apache.hadoop.mapred.TaskAttemptID)"><!-- --></A><H3>
2107	getTaskDiagnostics</H3>
2108	<PRE>
2109	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] <B>getTaskDiagnostics</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskId)
2110	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2111	<DL>
2112	<DD>Get the diagnostics for a given task
2113	<P>
2114	<DD><DL>
2115	</DL>
2116	</DD>
2117	<DD><DL>
2118	<DT><B>Parameters:</B><DD><CODE>taskId</CODE> - the id of the task
2119	<DT><B>Returns:</B><DD>an array of the diagnostic messages
2120	<DT><B>Throws:</B>
2121	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2122	</DD>
2123	</DL>
2124	<HR>
2125
2126	<A NAME="getTip(org.apache.hadoop.mapred.TaskID)"><!-- --></A><H3>
2127	getTip</H3>
2128	<PRE>
2129	public org.apache.hadoop.mapred.TaskInProgress <B>getTip</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</A> tipid)</PRE>
2130	<DL>
2131	<DD>Returns specified TaskInProgress, or null.
2132	<P>
2133	<DD><DL>
2134	</DL>
2135	</DD>
2136	<DD><DL>
2137	</DL>
2138	</DD>
2139	</DL>
2140	<HR>
2141
2142	<A NAME="killTask(org.apache.hadoop.mapred.TaskAttemptID, boolean)"><!-- --></A><H3>
2143	killTask</H3>
2144	<PRE>
2145	public boolean <B>killTask</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskid,
2146	boolean shouldFail)
2147	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2148	<DL>
2149	<DD>Mark a Task to be killed
2150	<P>
2151	<DD><DL>
2152	</DL>
2153	</DD>
2154	<DD><DL>
2155	<DT><B>Parameters:</B><DD><CODE>taskid</CODE> - the id of the task to kill.<DD><CODE>shouldFail</CODE> - if true the task is failed and added to failed tasks list, otherwise
2156	it is just killed, w/o affecting job failure status.
2157	<DT><B>Throws:</B>
2158	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2159	</DD>
2160	</DL>
2161	<HR>
2162
2163	<A NAME="getAssignedTracker(org.apache.hadoop.mapred.TaskAttemptID)"><!-- --></A><H3>
2164	getAssignedTracker</H3>
2165	<PRE>
2166	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getAssignedTracker</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A> taskId)</PRE>
2167	<DL>
2168	<DD>Get tracker name for a given task id.
2169	<P>
2170	<DD><DL>
2171	</DL>
2172	</DD>
2173	<DD><DL>
2174	<DT><B>Parameters:</B><DD><CODE>taskId</CODE> - the name of the task
2175	<DT><B>Returns:</B><DD>The name of the task tracker</DL>
2176	</DD>
2177	</DL>
2178	<HR>
2179
2180	<A NAME="jobsToComplete()"><!-- --></A><H3>
2181	jobsToComplete</H3>
2182	<PRE>
2183	public <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[] <B>jobsToComplete</B>()</PRE>
2184	<DL>
2185	<DD>Get the jobs that are not completed and not failed
2186	<P>
2187	<DD><DL>
2188	</DL>
2189	</DD>
2190	<DD><DL>
2191
2192	<DT><B>Returns:</B><DD>array of JobStatus for the running/to-be-run
2193	jobs.</DL>
2194	</DD>
2195	</DL>
2196	<HR>
2197
2198	<A NAME="getAllJobs()"><!-- --></A><H3>
2199	getAllJobs</H3>
2200	<PRE>
2201	public <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[] <B>getAllJobs</B>()</PRE>
2202	<DL>
2203	<DD>Get all the jobs submitted.
2204	<P>
2205	<DD><DL>
2206	</DL>
2207	</DD>
2208	<DD><DL>
2209
2210	<DT><B>Returns:</B><DD>array of JobStatus for the submitted jobs</DL>
2211	</DD>
2212	</DL>
2213	<HR>
2214
2215	<A NAME="getSystemDir()"><!-- --></A><H3>
2216	getSystemDir</H3>
2217	<PRE>
2218	public <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getSystemDir</B>()</PRE>
2219	<DL>
2220	<DD>Grab the jobtracker system directory path where job-specific files are to be placed.
2221	<P>
2222	<DD><DL>
2223	</DL>
2224	</DD>
2225	<DD><DL>
2226
2227	<DT><B>Returns:</B><DD>the system directory where job-specific files are to be placed.<DT><B>See Also:</B><DD><CODE>JobSubmissionProtocol.getSystemDir()</CODE></DL>
2228	</DD>
2229	</DL>
2230	<HR>
2231
2232	<A NAME="getJob(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2233	getJob</H3>
2234	<PRE>
2235	public org.apache.hadoop.mapred.JobInProgress <B>getJob</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobid)</PRE>
2236	<DL>
2237	<DD>Obtain the job object identified by jobid
2238	<P>
2239	<DD><DL>
2240	</DL>
2241	</DD>
2242	<DD><DL>
2243
2244	<DT><B>Returns:</B><DD>jobInProgress object</DL>
2245	</DD>
2246	</DL>
2247	<HR>
2248
2249	<A NAME="getLocalJobFilePath(org.apache.hadoop.mapred.JobID)"><!-- --></A><H3>
2250	getLocalJobFilePath</H3>
2251	<PRE>
2252	public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getLocalJobFilePath</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> jobId)</PRE>
2253	<DL>
2254	<DD>Get the localized job file path on the job trackers local file system
2255	<P>
2256	<DD><DL>
2257	</DL>
2258	</DD>
2259	<DD><DL>
2260	<DT><B>Parameters:</B><DD><CODE>jobId</CODE> - id of the job
2261	<DT><B>Returns:</B><DD>the path of the job conf file on the local file system</DL>
2262	</DD>
2263	</DL>
2264	<HR>
2265
2266	<A NAME="main(java.lang.String[])"><!-- --></A><H3>
2267	main</H3>
2268	<PRE>
2269	public static void <B>main</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] argv)
2270	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A>,
2271	<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
2272	<DL>
2273	<DD>Start the JobTracker process. This is used only for debugging. As a rule,
2274	JobTracker should be run as part of the DFS Namenode process.
2275	<P>
2276	<DD><DL>
2277	</DL>
2278	</DD>
2279	<DD><DL>
2280
2281	<DT><B>Throws:</B>
2282	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE>
2283	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
2284	</DD>
2285	</DL>
2286	<HR>
2287
2288	<A NAME="getQueues()"><!-- --></A><H3>
2289	getQueues</H3>
2290	<PRE>
2291	public <A HREF="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</A>[] <B>getQueues</B>()
2292	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2293	<DL>
2294	<DD>Gets set of Job Queues associated with the Job Tracker
2295	<P>
2296	<DD><DL>
2297	</DL>
2298	</DD>
2299	<DD><DL>
2300
2301	<DT><B>Returns:</B><DD>Array of the Job Queue Information Object
2302	<DT><B>Throws:</B>
2303	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2304	</DD>
2305	</DL>
2306	<HR>
2307
2308	<A NAME="getQueueInfo(java.lang.String)"><!-- --></A><H3>
2309	getQueueInfo</H3>
2310	<PRE>
2311	public <A HREF="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</A> <B>getQueueInfo</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> queue)
2312	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2313	<DL>
2314	<DD>Gets scheduling information associated with the particular Job queue
2315	<P>
2316	<DD><DL>
2317	</DL>
2318	</DD>
2319	<DD><DL>
2320	<DT><B>Parameters:</B><DD><CODE>queue</CODE> - Queue Name
2321	<DT><B>Returns:</B><DD>Scheduling Information of the Queue
2322	<DT><B>Throws:</B>
2323	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2324	</DD>
2325	</DL>
2326	<HR>
2327
2328	<A NAME="getJobsFromQueue(java.lang.String)"><!-- --></A><H3>
2329	getJobsFromQueue</H3>
2330	<PRE>
2331	public <A HREF="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</A>[] <B>getJobsFromQueue</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> queue)
2332	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2333	<DL>
2334	<DD>Gets all the jobs submitted to the particular Queue
2335	<P>
2336	<DD><DL>
2337	</DL>
2338	</DD>
2339	<DD><DL>
2340	<DT><B>Parameters:</B><DD><CODE>queue</CODE> - Queue name
2341	<DT><B>Returns:</B><DD>array of JobStatus for the submitted jobs
2342	<DT><B>Throws:</B>
2343	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2344	</DD>
2345	</DL>
2346	<HR>
2347
2348	<A NAME="refreshServiceAcl()"><!-- --></A><H3>
2349	refreshServiceAcl</H3>
2350	<PRE>
2351	public void <B>refreshServiceAcl</B>()
2352	throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
2353	<DL>
2354	<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html#refreshServiceAcl()">RefreshAuthorizationPolicyProtocol</A></CODE></B></DD>
2355	<DD>Refresh the service-level authorization policy in-effect.
2356	<P>
2357	<DD><DL>
2358	<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html#refreshServiceAcl()">refreshServiceAcl</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/security/authorize/RefreshAuthorizationPolicyProtocol.html" title="interface in org.apache.hadoop.security.authorize">RefreshAuthorizationPolicyProtocol</A></CODE></DL>
2359	</DD>
2360	<DD><DL>
2361
2362	<DT><B>Throws:</B>
2363	<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
2364	</DD>
2365	</DL>
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2418	SUMMARY: <A HREF="#nested_class_summary">NESTED</A> \| <A HREF="#field_summary">FIELD</A> \| CONSTR \| <A HREF="#method_summary">METHOD</A></FONT></TD>
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