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7TaskID (Hadoop 0.20.1 API)
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89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.mapreduce</FONT>
92<BR>
93Class TaskID</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/ID.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.ID</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapred/ID.html" title="class in org.apache.hadoop.mapred">org.apache.hadoop.mapred.ID</A>
98          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.TaskID</B>
99</PRE>
100<DL>
101<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&gt;, <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>, <A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&gt;</DD>
102</DL>
103<DL>
104<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</A></DD>
105</DL>
106<HR>
107<DL>
108<DT><PRE>public class <B>TaskID</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapred/ID.html" title="class in org.apache.hadoop.mapred">ID</A></DL>
109</PRE>
110
111<P>
112TaskID represents the immutable and unique identifier for
113 a Map or Reduce Task. Each TaskID encompasses multiple attempts made to
114 execute the Map or Reduce Task, each of which are uniquely indentified by
115 their TaskAttemptID.
116 
117 TaskID consists of 3 parts. First part is the <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A>, that this
118 TaskInProgress belongs to. Second part of the TaskID is either 'm' or 'r'
119 representing whether the task is a map task or a reduce task.
120 And the third part is the task number. <br> 
121 An example TaskID is :
122 <code>task_200707121733_0003_m_000005</code> , which represents the
123 fifth map task in the third job running at the jobtracker
124 started at <code>200707121733</code>.
125 <p>
126 Applications should never construct or parse TaskID strings
127 , but rather use appropriate constructors or <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#forName(java.lang.String)"><CODE>forName(String)</CODE></A> 
128 method.
129<P>
130
131<P>
132<DL>
133<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A>,
134<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskAttemptID</CODE></A></DL>
135<HR>
136
137<P>
138<!-- =========== FIELD SUMMARY =========== -->
139
140<A NAME="field_summary"><!-- --></A>
141<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
142<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
143<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
144<B>Field Summary</B></FONT></TH>
145</TR>
146<TR BGCOLOR="white" CLASS="TableRowColor">
147<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
148<CODE>protected static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/text/NumberFormat.html?is-external=true" title="class or interface in java.text">NumberFormat</A></CODE></FONT></TD>
149<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#idFormat">idFormat</A></B></CODE>
150
151<BR>
152&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
153</TR>
154<TR BGCOLOR="white" CLASS="TableRowColor">
155<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
156<CODE>protected static&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>
157<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#TASK">TASK</A></B></CODE>
158
159<BR>
160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
161</TR>
162</TABLE>
163&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
164<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
165<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
166<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></B></TH>
167</TR>
168<TR BGCOLOR="white" CLASS="TableRowColor">
169<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#id">id</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#SEPARATOR">SEPARATOR</A></CODE></TD>
170</TR>
171</TABLE>
172&nbsp;
173<!-- ======== CONSTRUCTOR SUMMARY ======== -->
174
175<A NAME="constructor_summary"><!-- --></A>
176<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
177<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
178<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
179<B>Constructor Summary</B></FONT></TH>
180</TR>
181<TR BGCOLOR="white" CLASS="TableRowColor">
182<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#TaskID()">TaskID</A></B>()</CODE>
183
184<BR>
185&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
186</TR>
187<TR BGCOLOR="white" CLASS="TableRowColor">
188<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#TaskID(org.apache.hadoop.mapreduce.JobID, boolean, int)">TaskID</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;jobId,
189       boolean&nbsp;isMap,
190       int&nbsp;id)</CODE>
191
192<BR>
193&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a TaskID object from given <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A>.</TD>
194</TR>
195<TR BGCOLOR="white" CLASS="TableRowColor">
196<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#TaskID(java.lang.String, int, boolean, int)">TaskID</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;jtIdentifier,
197       int&nbsp;jobId,
198       boolean&nbsp;isMap,
199       int&nbsp;id)</CODE>
200
201<BR>
202&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a TaskInProgressId object from given parts.</TD>
203</TR>
204</TABLE>
205&nbsp;
206<!-- ========== METHOD SUMMARY =========== -->
207
208<A NAME="method_summary"><!-- --></A>
209<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
210<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
211<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
212<B>Method Summary</B></FONT></TH>
213</TR>
214<TR BGCOLOR="white" CLASS="TableRowColor">
215<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
216<CODE>protected &nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</A></CODE></FONT></TD>
217<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#appendTo(java.lang.StringBuilder)">appendTo</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</A>&nbsp;builder)</CODE>
218
219<BR>
220&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add the unique string to the given builder.</TD>
221</TR>
222<TR BGCOLOR="white" CLASS="TableRowColor">
223<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
224<CODE>&nbsp;int</CODE></FONT></TD>
225<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#compareTo(org.apache.hadoop.mapreduce.ID)">compareTo</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&nbsp;o)</CODE>
226
227<BR>
228&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compare TaskInProgressIds by first jobIds, then by tip numbers.</TD>
229</TR>
230<TR BGCOLOR="white" CLASS="TableRowColor">
231<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
232<CODE>&nbsp;boolean</CODE></FONT></TD>
233<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#equals(java.lang.Object)">equals</A></B>(<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>&nbsp;o)</CODE>
234
235<BR>
236&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
237</TR>
238<TR BGCOLOR="white" CLASS="TableRowColor">
239<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
240<CODE>static&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A></CODE></FONT></TD>
241<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#forName(java.lang.String)">forName</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;str)</CODE>
242
243<BR>
244&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct a TaskID object from given string</TD>
245</TR>
246<TR BGCOLOR="white" CLASS="TableRowColor">
247<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
248<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A></CODE></FONT></TD>
249<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#getJobID()">getJobID</A></B>()</CODE>
250
251<BR>
252&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A> object that this tip belongs to</TD>
253</TR>
254<TR BGCOLOR="white" CLASS="TableRowColor">
255<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
256<CODE>&nbsp;int</CODE></FONT></TD>
257<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#hashCode()">hashCode</A></B>()</CODE>
258
259<BR>
260&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
261</TR>
262<TR BGCOLOR="white" CLASS="TableRowColor">
263<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
264<CODE>&nbsp;boolean</CODE></FONT></TD>
265<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#isMap()">isMap</A></B>()</CODE>
266
267<BR>
268&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns whether this TaskID is a map ID</TD>
269</TR>
270<TR BGCOLOR="white" CLASS="TableRowColor">
271<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
272<CODE>&nbsp;void</CODE></FONT></TD>
273<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#readFields(java.io.DataInput)">readFields</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)</CODE>
274
275<BR>
276&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deserialize the fields of this object from <code>in</code>.</TD>
277</TR>
278<TR BGCOLOR="white" CLASS="TableRowColor">
279<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
280<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>
281<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html#toString()">toString</A></B>()</CODE>
282
283<BR>
284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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/TaskID.html#write(java.io.DataOutput)">write</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</A>&nbsp;out)</CODE>
290
291<BR>
292&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Serialize the fields of this object to <code>out</code>.</TD>
293</TR>
294</TABLE>
295&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
296<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
297<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
298<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></B></TH>
299</TR>
300<TR BGCOLOR="white" CLASS="TableRowColor">
301<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#getId()">getId</A></CODE></TD>
302</TR>
303</TABLE>
304&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
305<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
306<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
307<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>
308</TR>
309<TR BGCOLOR="white" CLASS="TableRowColor">
310<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#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#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#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>
311</TR>
312</TABLE>
313&nbsp;
314<P>
315
316<!-- ============ FIELD DETAIL =========== -->
317
318<A NAME="field_detail"><!-- --></A>
319<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
320<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
321<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
322<B>Field Detail</B></FONT></TH>
323</TR>
324</TABLE>
325
326<A NAME="TASK"><!-- --></A><H3>
327TASK</H3>
328<PRE>
329protected 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>TASK</B></PRE>
330<DL>
331<DL>
332<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.TaskID.TASK">Constant Field Values</A></DL>
333</DL>
334<HR>
335
336<A NAME="idFormat"><!-- --></A><H3>
337idFormat</H3>
338<PRE>
339protected static final <A HREF="http://java.sun.com/javase/6/docs/api/java/text/NumberFormat.html?is-external=true" title="class or interface in java.text">NumberFormat</A> <B>idFormat</B></PRE>
340<DL>
341<DL>
342</DL>
343</DL>
344
345<!-- ========= CONSTRUCTOR DETAIL ======== -->
346
347<A NAME="constructor_detail"><!-- --></A>
348<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
349<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
350<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
351<B>Constructor Detail</B></FONT></TH>
352</TR>
353</TABLE>
354
355<A NAME="TaskID(org.apache.hadoop.mapreduce.JobID, boolean, int)"><!-- --></A><H3>
356TaskID</H3>
357<PRE>
358public <B>TaskID</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;jobId,
359              boolean&nbsp;isMap,
360              int&nbsp;id)</PRE>
361<DL>
362<DD>Constructs a TaskID object from given <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A>.
363<P>
364<DL>
365<DT><B>Parameters:</B><DD><CODE>jobId</CODE> - JobID that this tip belongs to<DD><CODE>isMap</CODE> - whether the tip is a map<DD><CODE>id</CODE> - the tip number</DL>
366</DL>
367<HR>
368
369<A NAME="TaskID(java.lang.String, int, boolean, int)"><!-- --></A><H3>
370TaskID</H3>
371<PRE>
372public <B>TaskID</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;jtIdentifier,
373              int&nbsp;jobId,
374              boolean&nbsp;isMap,
375              int&nbsp;id)</PRE>
376<DL>
377<DD>Constructs a TaskInProgressId object from given parts.
378<P>
379<DL>
380<DT><B>Parameters:</B><DD><CODE>jtIdentifier</CODE> - jobTracker identifier<DD><CODE>jobId</CODE> - job number<DD><CODE>isMap</CODE> - whether the tip is a map<DD><CODE>id</CODE> - the tip number</DL>
381</DL>
382<HR>
383
384<A NAME="TaskID()"><!-- --></A><H3>
385TaskID</H3>
386<PRE>
387public <B>TaskID</B>()</PRE>
388<DL>
389</DL>
390
391<!-- ============ METHOD DETAIL ========== -->
392
393<A NAME="method_detail"><!-- --></A>
394<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
395<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
396<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
397<B>Method Detail</B></FONT></TH>
398</TR>
399</TABLE>
400
401<A NAME="getJobID()"><!-- --></A><H3>
402getJobID</H3>
403<PRE>
404public <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A> <B>getJobID</B>()</PRE>
405<DL>
406<DD>Returns the <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><CODE>JobID</CODE></A> object that this tip belongs to
407<P>
408<DD><DL>
409</DL>
410</DD>
411</DL>
412<HR>
413
414<A NAME="isMap()"><!-- --></A><H3>
415isMap</H3>
416<PRE>
417public boolean <B>isMap</B>()</PRE>
418<DL>
419<DD>Returns whether this TaskID is a map ID
420<P>
421<DD><DL>
422</DL>
423</DD>
424</DL>
425<HR>
426
427<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
428equals</H3>
429<PRE>
430public boolean <B>equals</B>(<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>&nbsp;o)</PRE>
431<DL>
432<DD><DL>
433<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
434</DD>
435<DD><DL>
436</DL>
437</DD>
438</DL>
439<HR>
440
441<A NAME="compareTo(org.apache.hadoop.mapreduce.ID)"><!-- --></A><H3>
442compareTo</H3>
443<PRE>
444public int <B>compareTo</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&nbsp;o)</PRE>
445<DL>
446<DD>Compare TaskInProgressIds by first jobIds, then by tip numbers. Reduces are
447 defined as greater then maps.
448<P>
449<DD><DL>
450<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true#compareTo(T)" title="class or interface in java.lang">compareTo</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&gt;</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#compareTo(org.apache.hadoop.mapreduce.ID)">compareTo</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
451</DD>
452<DD><DL>
453</DL>
454</DD>
455</DL>
456<HR>
457
458<A NAME="toString()"><!-- --></A><H3>
459toString</H3>
460<PRE>
461public <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>toString</B>()</PRE>
462<DL>
463<DD><DL>
464<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
465</DD>
466<DD><DL>
467</DL>
468</DD>
469</DL>
470<HR>
471
472<A NAME="appendTo(java.lang.StringBuilder)"><!-- --></A><H3>
473appendTo</H3>
474<PRE>
475protected <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</A> <B>appendTo</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</A>&nbsp;builder)</PRE>
476<DL>
477<DD>Add the unique string to the given builder.
478<P>
479<DD><DL>
480<DT><B>Parameters:</B><DD><CODE>builder</CODE> - the builder to append to
481<DT><B>Returns:</B><DD>the builder that was passed in</DL>
482</DD>
483</DL>
484<HR>
485
486<A NAME="hashCode()"><!-- --></A><H3>
487hashCode</H3>
488<PRE>
489public int <B>hashCode</B>()</PRE>
490<DL>
491<DD><DL>
492<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
493</DD>
494<DD><DL>
495</DL>
496</DD>
497</DL>
498<HR>
499
500<A NAME="readFields(java.io.DataInput)"><!-- --></A><H3>
501readFields</H3>
502<PRE>
503public void <B>readFields</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)
504                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>
505<DL>
506<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)">Writable</A></CODE></B></DD>
507<DD>Deserialize the fields of this object from <code>in</code>. 
508 
509 <p>For efficiency, implementations should attempt to re-use storage in the
510 existing object where possible.</p>
511<P>
512<DD><DL>
513<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)">readFields</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#readFields(java.io.DataInput)">readFields</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
514</DD>
515<DD><DL>
516<DT><B>Parameters:</B><DD><CODE>in</CODE> - <code>DataInput</code> to deseriablize this object from.
517<DT><B>Throws:</B>
518<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>
519</DD>
520</DL>
521<HR>
522
523<A NAME="write(java.io.DataOutput)"><!-- --></A><H3>
524write</H3>
525<PRE>
526public void <B>write</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</A>&nbsp;out)
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><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#write(java.io.DataOutput)">Writable</A></CODE></B></DD>
530<DD>Serialize the fields of this object to <code>out</code>.
531<P>
532<DD><DL>
533<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#write(java.io.DataOutput)">write</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#write(java.io.DataOutput)">write</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></CODE></DL>
534</DD>
535<DD><DL>
536<DT><B>Parameters:</B><DD><CODE>out</CODE> - <code>DataOuput</code> to serialize this object into.
537<DT><B>Throws:</B>
538<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>
539</DD>
540</DL>
541<HR>
542
543<A NAME="forName(java.lang.String)"><!-- --></A><H3>
544forName</H3>
545<PRE>
546public static <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A> <B>forName</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;str)
547                      throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></PRE>
548<DL>
549<DD>Construct a TaskID object from given string
550<P>
551<DD><DL>
552
553<DT><B>Returns:</B><DD>constructed TaskID object or null if the given String is null
554<DT><B>Throws:</B>
555<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if the given string is malformed</DL>
556</DD>
557</DL>
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