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7TaskAttemptID (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapreduce</FONT>
92<BR>
93Class TaskAttemptID</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.TaskAttemptID</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/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A></DD>
105</DL>
106<HR>
107<DL>
108<DT><PRE>public class <B>TaskAttemptID</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>
112TaskAttemptID represents the immutable and unique identifier for
113 a task attempt. Each task attempt is one particular instance of a Map or
114 Reduce Task identified by its TaskID.
115 
116 TaskAttemptID consists of 2 parts. First part is the
117 <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A>, that this TaskAttemptID belongs to.
118 Second part is the task attempt number. <br> 
119 An example TaskAttemptID is :
120 <code>attempt_200707121733_0003_m_000005_0</code> , which represents the
121 zeroth task attempt for the fifth map task in the third job
122 running at the jobtracker started at <code>200707121733</code>.
123 <p>
124 Applications should never construct or parse TaskAttemptID strings
125 , but rather use appropriate constructors or <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#forName(java.lang.String)"><CODE>forName(String)</CODE></A> 
126 method.
127<P>
128
129<P>
130<DL>
131<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>,
132<A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A></DL>
133<HR>
134
135<P>
136<!-- =========== FIELD SUMMARY =========== -->
137
138<A NAME="field_summary"><!-- --></A>
139<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
140<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
141<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
142<B>Field Summary</B></FONT></TH>
143</TR>
144<TR BGCOLOR="white" CLASS="TableRowColor">
145<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
146<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>
147<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#ATTEMPT">ATTEMPT</A></B></CODE>
148
149<BR>
150&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
151</TR>
152</TABLE>
153&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
154<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
155<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
156<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>
157</TR>
158<TR BGCOLOR="white" CLASS="TableRowColor">
159<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>
160</TR>
161</TABLE>
162&nbsp;
163<!-- ======== CONSTRUCTOR SUMMARY ======== -->
164
165<A NAME="constructor_summary"><!-- --></A>
166<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
167<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
168<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
169<B>Constructor Summary</B></FONT></TH>
170</TR>
171<TR BGCOLOR="white" CLASS="TableRowColor">
172<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#TaskAttemptID()">TaskAttemptID</A></B>()</CODE>
173
174<BR>
175&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
176</TR>
177<TR BGCOLOR="white" CLASS="TableRowColor">
178<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#TaskAttemptID(java.lang.String, int, boolean, int, int)">TaskAttemptID</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,
179              int&nbsp;jobId,
180              boolean&nbsp;isMap,
181              int&nbsp;taskId,
182              int&nbsp;id)</CODE>
183
184<BR>
185&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a TaskId object from given parts.</TD>
186</TR>
187<TR BGCOLOR="white" CLASS="TableRowColor">
188<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#TaskAttemptID(org.apache.hadoop.mapreduce.TaskID, int)">TaskAttemptID</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A>&nbsp;taskId,
189              int&nbsp;id)</CODE>
190
191<BR>
192&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a TaskAttemptID object from given <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A>.</TD>
193</TR>
194</TABLE>
195&nbsp;
196<!-- ========== METHOD SUMMARY =========== -->
197
198<A NAME="method_summary"><!-- --></A>
199<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
200<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
201<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
202<B>Method Summary</B></FONT></TH>
203</TR>
204<TR BGCOLOR="white" CLASS="TableRowColor">
205<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
206<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>
207<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
208
209<BR>
210&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add the unique string to the StringBuilder</TD>
211</TR>
212<TR BGCOLOR="white" CLASS="TableRowColor">
213<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
214<CODE>&nbsp;int</CODE></FONT></TD>
215<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
216
217<BR>
218&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compare TaskIds by first tipIds, then by task numbers.</TD>
219</TR>
220<TR BGCOLOR="white" CLASS="TableRowColor">
221<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
222<CODE>&nbsp;boolean</CODE></FONT></TD>
223<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
224
225<BR>
226&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
227</TR>
228<TR BGCOLOR="white" CLASS="TableRowColor">
229<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
230<CODE>static&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A></CODE></FONT></TD>
231<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
232
233<BR>
234&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct a TaskAttemptID object from given string</TD>
235</TR>
236<TR BGCOLOR="white" CLASS="TableRowColor">
237<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
238<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A></CODE></FONT></TD>
239<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getJobID()">getJobID</A></B>()</CODE>
240
241<BR>
242&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 task attempt belongs to</TD>
243</TR>
244<TR BGCOLOR="white" CLASS="TableRowColor">
245<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
246<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A></CODE></FONT></TD>
247<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getTaskID()">getTaskID</A></B>()</CODE>
248
249<BR>
250&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A> object that this task attempt belongs to</TD>
251</TR>
252<TR BGCOLOR="white" CLASS="TableRowColor">
253<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
254<CODE>&nbsp;int</CODE></FONT></TD>
255<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#hashCode()">hashCode</A></B>()</CODE>
256
257<BR>
258&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
259</TR>
260<TR BGCOLOR="white" CLASS="TableRowColor">
261<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
262<CODE>&nbsp;boolean</CODE></FONT></TD>
263<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#isMap()">isMap</A></B>()</CODE>
264
265<BR>
266&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns whether this TaskAttemptID is a map ID</TD>
267</TR>
268<TR BGCOLOR="white" CLASS="TableRowColor">
269<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
270<CODE>&nbsp;void</CODE></FONT></TD>
271<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
272
273<BR>
274&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deserialize the fields of this object from <code>in</code>.</TD>
275</TR>
276<TR BGCOLOR="white" CLASS="TableRowColor">
277<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
278<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>
279<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#toString()">toString</A></B>()</CODE>
280
281<BR>
282&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
283</TR>
284<TR BGCOLOR="white" CLASS="TableRowColor">
285<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
286<CODE>&nbsp;void</CODE></FONT></TD>
287<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.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>
288
289<BR>
290&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Serialize the fields of this object to <code>out</code>.</TD>
291</TR>
292</TABLE>
293&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
294<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
295<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
296<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>
297</TR>
298<TR BGCOLOR="white" CLASS="TableRowColor">
299<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#getId()">getId</A></CODE></TD>
300</TR>
301</TABLE>
302&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
303<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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305<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>
306</TR>
307<TR BGCOLOR="white" CLASS="TableRowColor">
308<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>
309</TR>
310</TABLE>
311&nbsp;
312<P>
313
314<!-- ============ FIELD DETAIL =========== -->
315
316<A NAME="field_detail"><!-- --></A>
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318<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
319<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
320<B>Field Detail</B></FONT></TH>
321</TR>
322</TABLE>
323
324<A NAME="ATTEMPT"><!-- --></A><H3>
325ATTEMPT</H3>
326<PRE>
327protected 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>ATTEMPT</B></PRE>
328<DL>
329<DL>
330<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.TaskAttemptID.ATTEMPT">Constant Field Values</A></DL>
331</DL>
332
333<!-- ========= CONSTRUCTOR DETAIL ======== -->
334
335<A NAME="constructor_detail"><!-- --></A>
336<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
337<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
338<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
339<B>Constructor Detail</B></FONT></TH>
340</TR>
341</TABLE>
342
343<A NAME="TaskAttemptID(org.apache.hadoop.mapreduce.TaskID, int)"><!-- --></A><H3>
344TaskAttemptID</H3>
345<PRE>
346public <B>TaskAttemptID</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A>&nbsp;taskId,
347                     int&nbsp;id)</PRE>
348<DL>
349<DD>Constructs a TaskAttemptID object from given <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A>.
350<P>
351<DL>
352<DT><B>Parameters:</B><DD><CODE>taskId</CODE> - TaskID that this task belongs to<DD><CODE>id</CODE> - the task attempt number</DL>
353</DL>
354<HR>
355
356<A NAME="TaskAttemptID(java.lang.String, int, boolean, int, int)"><!-- --></A><H3>
357TaskAttemptID</H3>
358<PRE>
359public <B>TaskAttemptID</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,
360                     int&nbsp;jobId,
361                     boolean&nbsp;isMap,
362                     int&nbsp;taskId,
363                     int&nbsp;id)</PRE>
364<DL>
365<DD>Constructs a TaskId object from given parts.
366<P>
367<DL>
368<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>taskId</CODE> - taskId number<DD><CODE>id</CODE> - the task attempt number</DL>
369</DL>
370<HR>
371
372<A NAME="TaskAttemptID()"><!-- --></A><H3>
373TaskAttemptID</H3>
374<PRE>
375public <B>TaskAttemptID</B>()</PRE>
376<DL>
377</DL>
378
379<!-- ============ METHOD DETAIL ========== -->
380
381<A NAME="method_detail"><!-- --></A>
382<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
383<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
384<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
385<B>Method Detail</B></FONT></TH>
386</TR>
387</TABLE>
388
389<A NAME="getJobID()"><!-- --></A><H3>
390getJobID</H3>
391<PRE>
392public <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A> <B>getJobID</B>()</PRE>
393<DL>
394<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 task attempt belongs to
395<P>
396<DD><DL>
397</DL>
398</DD>
399</DL>
400<HR>
401
402<A NAME="getTaskID()"><!-- --></A><H3>
403getTaskID</H3>
404<PRE>
405public <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce">TaskID</A> <B>getTaskID</B>()</PRE>
406<DL>
407<DD>Returns the <A HREF="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><CODE>TaskID</CODE></A> object that this task attempt belongs to
408<P>
409<DD><DL>
410</DL>
411</DD>
412</DL>
413<HR>
414
415<A NAME="isMap()"><!-- --></A><H3>
416isMap</H3>
417<PRE>
418public boolean <B>isMap</B>()</PRE>
419<DL>
420<DD>Returns whether this TaskAttemptID is a map ID
421<P>
422<DD><DL>
423</DL>
424</DD>
425</DL>
426<HR>
427
428<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
429equals</H3>
430<PRE>
431public 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>
432<DL>
433<DD><DL>
434<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>
435</DD>
436<DD><DL>
437</DL>
438</DD>
439</DL>
440<HR>
441
442<A NAME="appendTo(java.lang.StringBuilder)"><!-- --></A><H3>
443appendTo</H3>
444<PRE>
445protected <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>
446<DL>
447<DD>Add the unique string to the StringBuilder
448<P>
449<DD><DL>
450<DT><B>Parameters:</B><DD><CODE>builder</CODE> - the builder to append ot
451<DT><B>Returns:</B><DD>the builder that was passed in.</DL>
452</DD>
453</DL>
454<HR>
455
456<A NAME="readFields(java.io.DataInput)"><!-- --></A><H3>
457readFields</H3>
458<PRE>
459public 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)
460                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>
461<DL>
462<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)">Writable</A></CODE></B></DD>
463<DD>Deserialize the fields of this object from <code>in</code>. 
464 
465 <p>For efficiency, implementations should attempt to re-use storage in the
466 existing object where possible.</p>
467<P>
468<DD><DL>
469<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>
470</DD>
471<DD><DL>
472<DT><B>Parameters:</B><DD><CODE>in</CODE> - <code>DataInput</code> to deseriablize this object from.
473<DT><B>Throws:</B>
474<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>
475</DD>
476</DL>
477<HR>
478
479<A NAME="write(java.io.DataOutput)"><!-- --></A><H3>
480write</H3>
481<PRE>
482public 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)
483           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>
484<DL>
485<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#write(java.io.DataOutput)">Writable</A></CODE></B></DD>
486<DD>Serialize the fields of this object to <code>out</code>.
487<P>
488<DD><DL>
489<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>
490</DD>
491<DD><DL>
492<DT><B>Parameters:</B><DD><CODE>out</CODE> - <code>DataOuput</code> to serialize this object into.
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</DD>
496</DL>
497<HR>
498
499<A NAME="hashCode()"><!-- --></A><H3>
500hashCode</H3>
501<PRE>
502public int <B>hashCode</B>()</PRE>
503<DL>
504<DD><DL>
505<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>
506</DD>
507<DD><DL>
508</DL>
509</DD>
510</DL>
511<HR>
512
513<A NAME="compareTo(org.apache.hadoop.mapreduce.ID)"><!-- --></A><H3>
514compareTo</H3>
515<PRE>
516public int <B>compareTo</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&nbsp;o)</PRE>
517<DL>
518<DD>Compare TaskIds by first tipIds, then by task numbers.
519<P>
520<DD><DL>
521<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>
522</DD>
523<DD><DL>
524</DL>
525</DD>
526</DL>
527<HR>
528
529<A NAME="toString()"><!-- --></A><H3>
530toString</H3>
531<PRE>
532public <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>
533<DL>
534<DD><DL>
535<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>
536</DD>
537<DD><DL>
538</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/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</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 TaskAttemptID object from given string
550<P>
551<DD><DL>
552
553<DT><B>Returns:</B><DD>constructed TaskAttemptID 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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