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7Job (Hadoop 0.20.1 API)
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79  SUMMARY:&nbsp;<A HREF="#nested_class_summary">NESTED</A>&nbsp;|&nbsp;<A HREF="#fields_inherited_from_class_org.apache.hadoop.mapreduce.JobContext">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.mapreduce</FONT>
92<BR>
93Class Job</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 "><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.JobContext</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.Job</B>
98</PRE>
99<HR>
100<DL>
101<DT><PRE>public class <B>Job</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></DL>
102</PRE>
103
104<P>
105The job submitter's view of the Job. It allows the user to configure the
106 job, submit it, control its execution, and query the state. The set methods
107 only work until the job is submitted, afterwards they will throw an
108 IllegalStateException.
109<P>
110
111<P>
112<HR>
113
114<P>
115<!-- ======== NESTED CLASS SUMMARY ======== -->
116
117<A NAME="nested_class_summary"><!-- --></A>
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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&nbsp;class</CODE></FONT></TD>
126<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.JobState.html" title="enum in org.apache.hadoop.mapreduce">Job.JobState</A></B></CODE>
127
128<BR>
129&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
130</TR>
131</TABLE>
132&nbsp;<!-- =========== FIELD SUMMARY =========== -->
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137<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
138<B>Field Summary</B></FONT></TH>
139</TR>
140</TABLE>
141&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.JobContext"><!-- --></A>
142<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
143<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
144<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></B></TH>
145</TR>
146<TR BGCOLOR="white" CLASS="TableRowColor">
147<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#COMBINE_CLASS_ATTR">COMBINE_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#conf">conf</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#INPUT_FORMAT_CLASS_ATTR">INPUT_FORMAT_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#MAP_CLASS_ATTR">MAP_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#OUTPUT_FORMAT_CLASS_ATTR">OUTPUT_FORMAT_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#PARTITIONER_CLASS_ATTR">PARTITIONER_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#REDUCE_CLASS_ATTR">REDUCE_CLASS_ATTR</A></CODE></TD>
148</TR>
149</TABLE>
150&nbsp;
151<!-- ======== CONSTRUCTOR SUMMARY ======== -->
152
153<A NAME="constructor_summary"><!-- --></A>
154<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
155<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
156<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
157<B>Constructor Summary</B></FONT></TH>
158</TR>
159<TR BGCOLOR="white" CLASS="TableRowColor">
160<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#Job()">Job</A></B>()</CODE>
161
162<BR>
163&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
164</TR>
165<TR BGCOLOR="white" CLASS="TableRowColor">
166<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#Job(org.apache.hadoop.conf.Configuration)">Job</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</CODE>
167
168<BR>
169&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
170</TR>
171<TR BGCOLOR="white" CLASS="TableRowColor">
172<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#Job(org.apache.hadoop.conf.Configuration, java.lang.String)">Job</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
173    <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>&nbsp;jobName)</CODE>
174
175<BR>
176&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
177</TR>
178</TABLE>
179&nbsp;
180<!-- ========== METHOD SUMMARY =========== -->
181
182<A NAME="method_summary"><!-- --></A>
183<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
184<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
185<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
186<B>Method Summary</B></FONT></TH>
187</TR>
188<TR BGCOLOR="white" CLASS="TableRowColor">
189<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
190<CODE>&nbsp;void</CODE></FONT></TD>
191<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#failTask(org.apache.hadoop.mapreduce.TaskAttemptID)">failTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskId)</CODE>
192
193<BR>
194&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Fail indicated task attempt.</TD>
195</TR>
196<TR BGCOLOR="white" CLASS="TableRowColor">
197<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
198<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/Counters.html" title="class in org.apache.hadoop.mapreduce">Counters</A></CODE></FONT></TD>
199<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#getCounters()">getCounters</A></B>()</CODE>
200
201<BR>
202&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the counters for this job.</TD>
203</TR>
204<TR BGCOLOR="white" CLASS="TableRowColor">
205<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
206<CODE>&nbsp;<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/mapreduce/Job.html#getJar()">getJar</A></B>()</CODE>
208
209<BR>
210&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the pathname of the job's jar.</TD>
211</TR>
212<TR BGCOLOR="white" CLASS="TableRowColor">
213<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
214<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapred/TaskCompletionEvent.html" title="class in org.apache.hadoop.mapred">TaskCompletionEvent</A>[]</CODE></FONT></TD>
215<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#getTaskCompletionEvents(int)">getTaskCompletionEvents</A></B>(int&nbsp;startFrom)</CODE>
216
217<BR>
218&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get events indicating completion (success/failure) of component tasks.</TD>
219</TR>
220<TR BGCOLOR="white" CLASS="TableRowColor">
221<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
222<CODE>&nbsp;<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>
223<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#getTrackingURL()">getTrackingURL</A></B>()</CODE>
224
225<BR>
226&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the URL where some job progress information will be displayed.</TD>
227</TR>
228<TR BGCOLOR="white" CLASS="TableRowColor">
229<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
230<CODE>&nbsp;boolean</CODE></FONT></TD>
231<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#isComplete()">isComplete</A></B>()</CODE>
232
233<BR>
234&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check if the job is finished or not.</TD>
235</TR>
236<TR BGCOLOR="white" CLASS="TableRowColor">
237<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
238<CODE>&nbsp;boolean</CODE></FONT></TD>
239<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#isSuccessful()">isSuccessful</A></B>()</CODE>
240
241<BR>
242&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check if the job completed successfully.</TD>
243</TR>
244<TR BGCOLOR="white" CLASS="TableRowColor">
245<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
246<CODE>&nbsp;void</CODE></FONT></TD>
247<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#killJob()">killJob</A></B>()</CODE>
248
249<BR>
250&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Kill the running job.</TD>
251</TR>
252<TR BGCOLOR="white" CLASS="TableRowColor">
253<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
254<CODE>&nbsp;void</CODE></FONT></TD>
255<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#killTask(org.apache.hadoop.mapreduce.TaskAttemptID)">killTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskId)</CODE>
256
257<BR>
258&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Kill indicated task attempt.</TD>
259</TR>
260<TR BGCOLOR="white" CLASS="TableRowColor">
261<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
262<CODE>&nbsp;float</CODE></FONT></TD>
263<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#mapProgress()">mapProgress</A></B>()</CODE>
264
265<BR>
266&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <i>progress</i> of the job's map-tasks, as a float between 0.0
267 and 1.0.</TD>
268</TR>
269<TR BGCOLOR="white" CLASS="TableRowColor">
270<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
271<CODE>&nbsp;float</CODE></FONT></TD>
272<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#reduceProgress()">reduceProgress</A></B>()</CODE>
273
274<BR>
275&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <i>progress</i> of the job's reduce-tasks, as a float between 0.0
276 and 1.0.</TD>
277</TR>
278<TR BGCOLOR="white" CLASS="TableRowColor">
279<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
280<CODE>&nbsp;void</CODE></FONT></TD>
281<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setCombinerClass(java.lang.Class)">setCombinerClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce">Reducer</A>&gt;&nbsp;cls)</CODE>
282
283<BR>
284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the combiner class for the job.</TD>
285</TR>
286<TR BGCOLOR="white" CLASS="TableRowColor">
287<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
288<CODE>&nbsp;void</CODE></FONT></TD>
289<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setGroupingComparatorClass(java.lang.Class)">setGroupingComparatorClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&gt;&nbsp;cls)</CODE>
290
291<BR>
292&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Define the comparator that controls which keys are grouped together
293 for a single call to
294 <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html#reduce(KEYIN, java.lang.Iterable, org.apache.hadoop.mapreduce.Reducer.Context)"><CODE>Reducer.reduce(Object, Iterable,
295                       org.apache.hadoop.mapreduce.Reducer.Context)</CODE></A></TD>
296</TR>
297<TR BGCOLOR="white" CLASS="TableRowColor">
298<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
299<CODE>&nbsp;void</CODE></FONT></TD>
300<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setInputFormatClass(java.lang.Class)">setInputFormatClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&gt;&nbsp;cls)</CODE>
301
302<BR>
303&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> for the job.</TD>
304</TR>
305<TR BGCOLOR="white" CLASS="TableRowColor">
306<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
307<CODE>&nbsp;void</CODE></FONT></TD>
308<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setJarByClass(java.lang.Class)">setJarByClass</A></B>(<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>&lt;?&gt;&nbsp;cls)</CODE>
309
310<BR>
311&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the Jar by finding where a given class came from.</TD>
312</TR>
313<TR BGCOLOR="white" CLASS="TableRowColor">
314<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
315<CODE>&nbsp;void</CODE></FONT></TD>
316<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setJobName(java.lang.String)">setJobName</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>&nbsp;name)</CODE>
317
318<BR>
319&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the user-specified job name.</TD>
320</TR>
321<TR BGCOLOR="white" CLASS="TableRowColor">
322<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
323<CODE>&nbsp;void</CODE></FONT></TD>
324<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setMapOutputKeyClass(java.lang.Class)">setMapOutputKeyClass</A></B>(<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>&lt;?&gt;&nbsp;theClass)</CODE>
325
326<BR>
327&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the key class for the map output data.</TD>
328</TR>
329<TR BGCOLOR="white" CLASS="TableRowColor">
330<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
331<CODE>&nbsp;void</CODE></FONT></TD>
332<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setMapOutputValueClass(java.lang.Class)">setMapOutputValueClass</A></B>(<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>&lt;?&gt;&nbsp;theClass)</CODE>
333
334<BR>
335&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the value class for the map output data.</TD>
336</TR>
337<TR BGCOLOR="white" CLASS="TableRowColor">
338<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
339<CODE>&nbsp;void</CODE></FONT></TD>
340<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setMapperClass(java.lang.Class)">setMapperClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce">Mapper</A>&gt;&nbsp;cls)</CODE>
341
342<BR>
343&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> for the job.</TD>
344</TR>
345<TR BGCOLOR="white" CLASS="TableRowColor">
346<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
347<CODE>&nbsp;void</CODE></FONT></TD>
348<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setNumReduceTasks(int)">setNumReduceTasks</A></B>(int&nbsp;tasks)</CODE>
349
350<BR>
351&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the number of reduce tasks for the job.</TD>
352</TR>
353<TR BGCOLOR="white" CLASS="TableRowColor">
354<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
355<CODE>&nbsp;void</CODE></FONT></TD>
356<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setOutputFormatClass(java.lang.Class)">setOutputFormatClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce">OutputFormat</A>&gt;&nbsp;cls)</CODE>
357
358<BR>
359&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputFormat</CODE></A> for the job.</TD>
360</TR>
361<TR BGCOLOR="white" CLASS="TableRowColor">
362<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
363<CODE>&nbsp;void</CODE></FONT></TD>
364<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setOutputKeyClass(java.lang.Class)">setOutputKeyClass</A></B>(<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>&lt;?&gt;&nbsp;theClass)</CODE>
365
366<BR>
367&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the key class for the job output data.</TD>
368</TR>
369<TR BGCOLOR="white" CLASS="TableRowColor">
370<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
371<CODE>&nbsp;void</CODE></FONT></TD>
372<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setOutputValueClass(java.lang.Class)">setOutputValueClass</A></B>(<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>&lt;?&gt;&nbsp;theClass)</CODE>
373
374<BR>
375&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the value class for job outputs.</TD>
376</TR>
377<TR BGCOLOR="white" CLASS="TableRowColor">
378<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
379<CODE>&nbsp;void</CODE></FONT></TD>
380<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setPartitionerClass(java.lang.Class)">setPartitionerClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce">Partitioner</A>&gt;&nbsp;cls)</CODE>
381
382<BR>
383&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce"><CODE>Partitioner</CODE></A> for the job.</TD>
384</TR>
385<TR BGCOLOR="white" CLASS="TableRowColor">
386<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
387<CODE>&nbsp;void</CODE></FONT></TD>
388<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setReducerClass(java.lang.Class)">setReducerClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce">Reducer</A>&gt;&nbsp;cls)</CODE>
389
390<BR>
391&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> for the job.</TD>
392</TR>
393<TR BGCOLOR="white" CLASS="TableRowColor">
394<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
395<CODE>&nbsp;void</CODE></FONT></TD>
396<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setSortComparatorClass(java.lang.Class)">setSortComparatorClass</A></B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&gt;&nbsp;cls)</CODE>
397
398<BR>
399&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Define the comparator that controls how the keys are sorted before they
400 are passed to the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A>.</TD>
401</TR>
402<TR BGCOLOR="white" CLASS="TableRowColor">
403<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
404<CODE>&nbsp;void</CODE></FONT></TD>
405<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setWorkingDirectory(org.apache.hadoop.fs.Path)">setWorkingDirectory</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;dir)</CODE>
406
407<BR>
408&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the current working directory for the default file system.</TD>
409</TR>
410<TR BGCOLOR="white" CLASS="TableRowColor">
411<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
412<CODE>&nbsp;void</CODE></FONT></TD>
413<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#submit()">submit</A></B>()</CODE>
414
415<BR>
416&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Submit the job to the cluster and return immediately.</TD>
417</TR>
418<TR BGCOLOR="white" CLASS="TableRowColor">
419<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
420<CODE>&nbsp;boolean</CODE></FONT></TD>
421<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#waitForCompletion(boolean)">waitForCompletion</A></B>(boolean&nbsp;verbose)</CODE>
422
423<BR>
424&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Submit the job to the cluster and wait for it to finish.</TD>
425</TR>
426</TABLE>
427&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.JobContext"><!-- --></A>
428<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
429<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
430<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></B></TH>
431</TR>
432<TR BGCOLOR="white" CLASS="TableRowColor">
433<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getCombinerClass()">getCombinerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getConfiguration()">getConfiguration</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getGroupingComparator()">getGroupingComparator</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getInputFormatClass()">getInputFormatClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobID()">getJobID</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobName()">getJobName</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputKeyClass()">getMapOutputKeyClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputValueClass()">getMapOutputValueClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapperClass()">getMapperClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getNumReduceTasks()">getNumReduceTasks</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputFormatClass()">getOutputFormatClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputKeyClass()">getOutputKeyClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputValueClass()">getOutputValueClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getPartitionerClass()">getPartitionerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getReducerClass()">getReducerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getSortComparator()">getSortComparator</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getWorkingDirectory()">getWorkingDirectory</A></CODE></TD>
434</TR>
435</TABLE>
436&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
437<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
438<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
439<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>
440</TR>
441<TR BGCOLOR="white" CLASS="TableRowColor">
442<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>
443</TR>
444</TABLE>
445&nbsp;
446<P>
447
448<!-- ========= CONSTRUCTOR DETAIL ======== -->
449
450<A NAME="constructor_detail"><!-- --></A>
451<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
452<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
453<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
454<B>Constructor Detail</B></FONT></TH>
455</TR>
456</TABLE>
457
458<A NAME="Job()"><!-- --></A><H3>
459Job</H3>
460<PRE>
461public <B>Job</B>()
462    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>
463<DL>
464<DL>
465
466<DT><B>Throws:</B>
467<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>
468</DL>
469<HR>
470
471<A NAME="Job(org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
472Job</H3>
473<PRE>
474public <B>Job</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)
475    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>
476<DL>
477<DL>
478
479<DT><B>Throws:</B>
480<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>
481</DL>
482<HR>
483
484<A NAME="Job(org.apache.hadoop.conf.Configuration, java.lang.String)"><!-- --></A><H3>
485Job</H3>
486<PRE>
487public <B>Job</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
488           <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>&nbsp;jobName)
489    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>
490<DL>
491<DL>
492
493<DT><B>Throws:</B>
494<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>
495</DL>
496
497<!-- ============ METHOD DETAIL ========== -->
498
499<A NAME="method_detail"><!-- --></A>
500<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
501<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
502<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
503<B>Method Detail</B></FONT></TH>
504</TR>
505</TABLE>
506
507<A NAME="setNumReduceTasks(int)"><!-- --></A><H3>
508setNumReduceTasks</H3>
509<PRE>
510public void <B>setNumReduceTasks</B>(int&nbsp;tasks)
511                       throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
512<DL>
513<DD>Set the number of reduce tasks for the job.
514<P>
515<DD><DL>
516<DT><B>Parameters:</B><DD><CODE>tasks</CODE> - the number of reduce tasks
517<DT><B>Throws:</B>
518<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
519</DD>
520</DL>
521<HR>
522
523<A NAME="setWorkingDirectory(org.apache.hadoop.fs.Path)"><!-- --></A><H3>
524setWorkingDirectory</H3>
525<PRE>
526public void <B>setWorkingDirectory</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;dir)
527                         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>
528<DL>
529<DD>Set the current working directory for the default file system.
530<P>
531<DD><DL>
532<DT><B>Parameters:</B><DD><CODE>dir</CODE> - the new current working directory.
533<DT><B>Throws:</B>
534<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted
535<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>
536</DD>
537</DL>
538<HR>
539
540<A NAME="setInputFormatClass(java.lang.Class)"><!-- --></A><H3>
541setInputFormatClass</H3>
542<PRE>
543public void <B>setInputFormatClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&gt;&nbsp;cls)
544                         throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
545<DL>
546<DD>Set the <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> for the job.
547<P>
548<DD><DL>
549<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the <code>InputFormat</code> to use
550<DT><B>Throws:</B>
551<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
552</DD>
553</DL>
554<HR>
555
556<A NAME="setOutputFormatClass(java.lang.Class)"><!-- --></A><H3>
557setOutputFormatClass</H3>
558<PRE>
559public void <B>setOutputFormatClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce">OutputFormat</A>&gt;&nbsp;cls)
560                          throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
561<DL>
562<DD>Set the <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputFormat</CODE></A> for the job.
563<P>
564<DD><DL>
565<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the <code>OutputFormat</code> to use
566<DT><B>Throws:</B>
567<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
568</DD>
569</DL>
570<HR>
571
572<A NAME="setMapperClass(java.lang.Class)"><!-- --></A><H3>
573setMapperClass</H3>
574<PRE>
575public void <B>setMapperClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce">Mapper</A>&gt;&nbsp;cls)
576                    throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
577<DL>
578<DD>Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> for the job.
579<P>
580<DD><DL>
581<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the <code>Mapper</code> to use
582<DT><B>Throws:</B>
583<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
584</DD>
585</DL>
586<HR>
587
588<A NAME="setJarByClass(java.lang.Class)"><!-- --></A><H3>
589setJarByClass</H3>
590<PRE>
591public void <B>setJarByClass</B>(<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>&lt;?&gt;&nbsp;cls)</PRE>
592<DL>
593<DD>Set the Jar by finding where a given class came from.
594<P>
595<DD><DL>
596<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the example class</DL>
597</DD>
598</DL>
599<HR>
600
601<A NAME="getJar()"><!-- --></A><H3>
602getJar</H3>
603<PRE>
604public <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>getJar</B>()</PRE>
605<DL>
606<DD>Get the pathname of the job's jar.
607<P>
608<DD><DL>
609<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJar()">getJar</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></CODE></DL>
610</DD>
611<DD><DL>
612
613<DT><B>Returns:</B><DD>the pathname</DL>
614</DD>
615</DL>
616<HR>
617
618<A NAME="setCombinerClass(java.lang.Class)"><!-- --></A><H3>
619setCombinerClass</H3>
620<PRE>
621public void <B>setCombinerClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce">Reducer</A>&gt;&nbsp;cls)
622                      throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
623<DL>
624<DD>Set the combiner class for the job.
625<P>
626<DD><DL>
627<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the combiner to use
628<DT><B>Throws:</B>
629<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
630</DD>
631</DL>
632<HR>
633
634<A NAME="setReducerClass(java.lang.Class)"><!-- --></A><H3>
635setReducerClass</H3>
636<PRE>
637public void <B>setReducerClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce">Reducer</A>&gt;&nbsp;cls)
638                     throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
639<DL>
640<DD>Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> for the job.
641<P>
642<DD><DL>
643<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the <code>Reducer</code> to use
644<DT><B>Throws:</B>
645<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
646</DD>
647</DL>
648<HR>
649
650<A NAME="setPartitionerClass(java.lang.Class)"><!-- --></A><H3>
651setPartitionerClass</H3>
652<PRE>
653public void <B>setPartitionerClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce">Partitioner</A>&gt;&nbsp;cls)
654                         throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
655<DL>
656<DD>Set the <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce"><CODE>Partitioner</CODE></A> for the job.
657<P>
658<DD><DL>
659<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the <code>Partitioner</code> to use
660<DT><B>Throws:</B>
661<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
662</DD>
663</DL>
664<HR>
665
666<A NAME="setMapOutputKeyClass(java.lang.Class)"><!-- --></A><H3>
667setMapOutputKeyClass</H3>
668<PRE>
669public void <B>setMapOutputKeyClass</B>(<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>&lt;?&gt;&nbsp;theClass)
670                          throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
671<DL>
672<DD>Set the key class for the map output data. This allows the user to
673 specify the map output key class to be different than the final output
674 value class.
675<P>
676<DD><DL>
677<DT><B>Parameters:</B><DD><CODE>theClass</CODE> - the map output key class.
678<DT><B>Throws:</B>
679<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
680</DD>
681</DL>
682<HR>
683
684<A NAME="setMapOutputValueClass(java.lang.Class)"><!-- --></A><H3>
685setMapOutputValueClass</H3>
686<PRE>
687public void <B>setMapOutputValueClass</B>(<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>&lt;?&gt;&nbsp;theClass)
688                            throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
689<DL>
690<DD>Set the value class for the map output data. This allows the user to
691 specify the map output value class to be different than the final output
692 value class.
693<P>
694<DD><DL>
695<DT><B>Parameters:</B><DD><CODE>theClass</CODE> - the map output value class.
696<DT><B>Throws:</B>
697<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
698</DD>
699</DL>
700<HR>
701
702<A NAME="setOutputKeyClass(java.lang.Class)"><!-- --></A><H3>
703setOutputKeyClass</H3>
704<PRE>
705public void <B>setOutputKeyClass</B>(<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>&lt;?&gt;&nbsp;theClass)
706                       throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
707<DL>
708<DD>Set the key class for the job output data.
709<P>
710<DD><DL>
711<DT><B>Parameters:</B><DD><CODE>theClass</CODE> - the key class for the job output data.
712<DT><B>Throws:</B>
713<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
714</DD>
715</DL>
716<HR>
717
718<A NAME="setOutputValueClass(java.lang.Class)"><!-- --></A><H3>
719setOutputValueClass</H3>
720<PRE>
721public void <B>setOutputValueClass</B>(<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>&lt;?&gt;&nbsp;theClass)
722                         throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
723<DL>
724<DD>Set the value class for job outputs.
725<P>
726<DD><DL>
727<DT><B>Parameters:</B><DD><CODE>theClass</CODE> - the value class for job outputs.
728<DT><B>Throws:</B>
729<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
730</DD>
731</DL>
732<HR>
733
734<A NAME="setSortComparatorClass(java.lang.Class)"><!-- --></A><H3>
735setSortComparatorClass</H3>
736<PRE>
737public void <B>setSortComparatorClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&gt;&nbsp;cls)
738                            throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
739<DL>
740<DD>Define the comparator that controls how the keys are sorted before they
741 are passed to the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A>.
742<P>
743<DD><DL>
744<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the raw comparator
745<DT><B>Throws:</B>
746<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
747</DD>
748</DL>
749<HR>
750
751<A NAME="setGroupingComparatorClass(java.lang.Class)"><!-- --></A><H3>
752setGroupingComparatorClass</H3>
753<PRE>
754public void <B>setGroupingComparatorClass</B>(<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>&lt;? extends <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&gt;&nbsp;cls)
755                                throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
756<DL>
757<DD>Define the comparator that controls which keys are grouped together
758 for a single call to
759 <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html#reduce(KEYIN, java.lang.Iterable, org.apache.hadoop.mapreduce.Reducer.Context)"><CODE>Reducer.reduce(Object, Iterable,
760                       org.apache.hadoop.mapreduce.Reducer.Context)</CODE></A>
761<P>
762<DD><DL>
763<DT><B>Parameters:</B><DD><CODE>cls</CODE> - the raw comparator to use
764<DT><B>Throws:</B>
765<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
766</DD>
767</DL>
768<HR>
769
770<A NAME="setJobName(java.lang.String)"><!-- --></A><H3>
771setJobName</H3>
772<PRE>
773public void <B>setJobName</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>&nbsp;name)
774                throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></PRE>
775<DL>
776<DD>Set the user-specified job name.
777<P>
778<DD><DL>
779<DT><B>Parameters:</B><DD><CODE>name</CODE> - the job's new name.
780<DT><B>Throws:</B>
781<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the job is submitted</DL>
782</DD>
783</DL>
784<HR>
785
786<A NAME="getTrackingURL()"><!-- --></A><H3>
787getTrackingURL</H3>
788<PRE>
789public <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>getTrackingURL</B>()</PRE>
790<DL>
791<DD>Get the URL where some job progress information will be displayed.
792<P>
793<DD><DL>
794
795<DT><B>Returns:</B><DD>the URL where some job progress information will be displayed.</DL>
796</DD>
797</DL>
798<HR>
799
800<A NAME="mapProgress()"><!-- --></A><H3>
801mapProgress</H3>
802<PRE>
803public float <B>mapProgress</B>()
804                  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>
805<DL>
806<DD>Get the <i>progress</i> of the job's map-tasks, as a float between 0.0
807 and 1.0.  When all map tasks have completed, the function returns 1.0.
808<P>
809<DD><DL>
810
811<DT><B>Returns:</B><DD>the progress of the job's map-tasks.
812<DT><B>Throws:</B>
813<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>
814</DD>
815</DL>
816<HR>
817
818<A NAME="reduceProgress()"><!-- --></A><H3>
819reduceProgress</H3>
820<PRE>
821public float <B>reduceProgress</B>()
822                     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>
823<DL>
824<DD>Get the <i>progress</i> of the job's reduce-tasks, as a float between 0.0
825 and 1.0.  When all reduce tasks have completed, the function returns 1.0.
826<P>
827<DD><DL>
828
829<DT><B>Returns:</B><DD>the progress of the job's reduce-tasks.
830<DT><B>Throws:</B>
831<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>
832</DD>
833</DL>
834<HR>
835
836<A NAME="isComplete()"><!-- --></A><H3>
837isComplete</H3>
838<PRE>
839public boolean <B>isComplete</B>()
840                   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>
841<DL>
842<DD>Check if the job is finished or not.
843 This is a non-blocking call.
844<P>
845<DD><DL>
846
847<DT><B>Returns:</B><DD><code>true</code> if the job is complete, else <code>false</code>.
848<DT><B>Throws:</B>
849<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>
850</DD>
851</DL>
852<HR>
853
854<A NAME="isSuccessful()"><!-- --></A><H3>
855isSuccessful</H3>
856<PRE>
857public boolean <B>isSuccessful</B>()
858                     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>
859<DL>
860<DD>Check if the job completed successfully.
861<P>
862<DD><DL>
863
864<DT><B>Returns:</B><DD><code>true</code> if the job succeeded, else <code>false</code>.
865<DT><B>Throws:</B>
866<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>
867</DD>
868</DL>
869<HR>
870
871<A NAME="killJob()"><!-- --></A><H3>
872killJob</H3>
873<PRE>
874public void <B>killJob</B>()
875             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>
876<DL>
877<DD>Kill the running job.  Blocks until all job tasks have been
878 killed as well.  If the job is no longer running, it simply returns.
879<P>
880<DD><DL>
881
882<DT><B>Throws:</B>
883<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>
884</DD>
885</DL>
886<HR>
887
888<A NAME="getTaskCompletionEvents(int)"><!-- --></A><H3>
889getTaskCompletionEvents</H3>
890<PRE>
891public <A HREF="../../../../org/apache/hadoop/mapred/TaskCompletionEvent.html" title="class in org.apache.hadoop.mapred">TaskCompletionEvent</A>[] <B>getTaskCompletionEvents</B>(int&nbsp;startFrom)
892                                              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>
893<DL>
894<DD>Get events indicating completion (success/failure) of component tasks.
895<P>
896<DD><DL>
897<DT><B>Parameters:</B><DD><CODE>startFrom</CODE> - index to start fetching events from
898<DT><B>Returns:</B><DD>an array of <A HREF="../../../../org/apache/hadoop/mapred/TaskCompletionEvent.html" title="class in org.apache.hadoop.mapred"><CODE>TaskCompletionEvent</CODE></A>s
899<DT><B>Throws:</B>
900<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>
901</DD>
902</DL>
903<HR>
904
905<A NAME="killTask(org.apache.hadoop.mapreduce.TaskAttemptID)"><!-- --></A><H3>
906killTask</H3>
907<PRE>
908public void <B>killTask</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskId)
909              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>
910<DL>
911<DD>Kill indicated task attempt.
912<P>
913<DD><DL>
914<DT><B>Parameters:</B><DD><CODE>taskId</CODE> - the id of the task to be terminated.
915<DT><B>Throws:</B>
916<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>
917</DD>
918</DL>
919<HR>
920
921<A NAME="failTask(org.apache.hadoop.mapreduce.TaskAttemptID)"><!-- --></A><H3>
922failTask</H3>
923<PRE>
924public void <B>failTask</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskId)
925              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>
926<DL>
927<DD>Fail indicated task attempt.
928<P>
929<DD><DL>
930<DT><B>Parameters:</B><DD><CODE>taskId</CODE> - the id of the task to be terminated.
931<DT><B>Throws:</B>
932<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>
933</DD>
934</DL>
935<HR>
936
937<A NAME="getCounters()"><!-- --></A><H3>
938getCounters</H3>
939<PRE>
940public <A HREF="../../../../org/apache/hadoop/mapreduce/Counters.html" title="class in org.apache.hadoop.mapreduce">Counters</A> <B>getCounters</B>()
941                     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>
942<DL>
943<DD>Gets the counters for this job.
944<P>
945<DD><DL>
946
947<DT><B>Returns:</B><DD>the counters for this job.
948<DT><B>Throws:</B>
949<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>
950</DD>
951</DL>
952<HR>
953
954<A NAME="submit()"><!-- --></A><H3>
955submit</H3>
956<PRE>
957public void <B>submit</B>()
958            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>,
959                   <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>,
960                   <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</A></PRE>
961<DL>
962<DD>Submit the job to the cluster and return immediately.
963<P>
964<DD><DL>
965
966<DT><B>Throws:</B>
967<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>
968<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>
969<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</A></CODE></DL>
970</DD>
971</DL>
972<HR>
973
974<A NAME="waitForCompletion(boolean)"><!-- --></A><H3>
975waitForCompletion</H3>
976<PRE>
977public boolean <B>waitForCompletion</B>(boolean&nbsp;verbose)
978                          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>,
979                                 <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>,
980                                 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</A></PRE>
981<DL>
982<DD>Submit the job to the cluster and wait for it to finish.
983<P>
984<DD><DL>
985<DT><B>Parameters:</B><DD><CODE>verbose</CODE> - print the progress to the user
986<DT><B>Returns:</B><DD>true if the job succeeded
987<DT><B>Throws:</B>
988<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> - thrown if the communication with the
989         <code>JobTracker</code> is lost
990<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>
991<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</A></CODE></DL>
992</DD>
993</DL>
994<!-- ========= END OF CLASS DATA ========= -->
995<HR>
996
997
998<!-- ======= START OF BOTTOM NAVBAR ====== -->
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