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7OutputCommitter (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapred</FONT>
92<BR>
93Class OutputCommitter</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/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.OutputCommitter</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapred.OutputCommitter</B>
98</PRE>
99<DL>
100<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/hadoop/mapred/FileOutputCommitter.html" title="class in org.apache.hadoop.mapred">FileOutputCommitter</A></DD>
101</DL>
102<HR>
103<B>Deprecated.</B>&nbsp;<I>Use <A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputCommitter</CODE></A> instead.</I>
104<P>
105<DL>
106<DT><PRE><FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
107</FONT>public abstract class <B>OutputCommitter</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></DL>
108</PRE>
109
110<P>
111<code>OutputCommitter</code> describes the commit of task output for a
112 Map-Reduce job.
113
114 <p>The Map-Reduce framework relies on the <code>OutputCommitter</code> of
115 the job to:<p>
116 <ol>
117   <li>
118   Setup the job during initialization. For example, create the temporary
119   output directory for the job during the initialization of the job.
120   </li>
121   <li>
122   Cleanup the job after the job completion. For example, remove the
123   temporary output directory after the job completion.
124   </li>
125   <li>
126   Setup the task temporary output.
127   </li> 
128   <li>
129   Check whether a task needs a commit. This is to avoid the commit
130   procedure if a task does not need commit.
131   </li>
132   <li>
133   Commit of the task output.
134   </li> 
135   <li>
136   Discard the task commit.
137   </li>
138 </ol>
139<P>
140
141<P>
142<DL>
143<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/hadoop/mapred/FileOutputCommitter.html" title="class in org.apache.hadoop.mapred"><CODE>FileOutputCommitter</CODE></A>,
144<A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred"><CODE>JobContext</CODE></A>,
145<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred"><CODE>TaskAttemptContext</CODE></A></DL>
146<HR>
147
148<P>
149
150<!-- ======== CONSTRUCTOR SUMMARY ======== -->
151
152<A NAME="constructor_summary"><!-- --></A>
153<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
154<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
155<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
156<B>Constructor Summary</B></FONT></TH>
157</TR>
158<TR BGCOLOR="white" CLASS="TableRowColor">
159<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#OutputCommitter()">OutputCommitter</A></B>()</CODE>
160
161<BR>
162&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;&nbsp;</TD>
163</TR>
164</TABLE>
165&nbsp;
166<!-- ========== METHOD SUMMARY =========== -->
167
168<A NAME="method_summary"><!-- --></A>
169<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
170<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
171<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
172<B>Method Summary</B></FONT></TH>
173</TR>
174<TR BGCOLOR="white" CLASS="TableRowColor">
175<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
176<CODE>abstract &nbsp;void</CODE></FONT></TD>
177<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#abortTask(org.apache.hadoop.mapred.TaskAttemptContext)">abortTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
178
179<BR>
180&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Discard the task output</TD>
181</TR>
182<TR BGCOLOR="white" CLASS="TableRowColor">
183<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
184<CODE>&nbsp;void</CODE></FONT></TD>
185<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#abortTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">abortTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
186
187<BR>
188&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
189</TR>
190<TR BGCOLOR="white" CLASS="TableRowColor">
191<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
192<CODE>abstract &nbsp;void</CODE></FONT></TD>
193<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#cleanupJob(org.apache.hadoop.mapred.JobContext)">cleanupJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred">JobContext</A>&nbsp;jobContext)</CODE>
194
195<BR>
196&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;For cleaning up the job's output after job completion</TD>
197</TR>
198<TR BGCOLOR="white" CLASS="TableRowColor">
199<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
200<CODE>&nbsp;void</CODE></FONT></TD>
201<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#cleanupJob(org.apache.hadoop.mapreduce.JobContext)">cleanupJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</CODE>
202
203<BR>
204&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
205</TR>
206<TR BGCOLOR="white" CLASS="TableRowColor">
207<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
208<CODE>abstract &nbsp;void</CODE></FONT></TD>
209<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#commitTask(org.apache.hadoop.mapred.TaskAttemptContext)">commitTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
210
211<BR>
212&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;To promote the task's temporary output to final output location
213 
214 The task's output is moved to the job's output directory.</TD>
215</TR>
216<TR BGCOLOR="white" CLASS="TableRowColor">
217<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
218<CODE>&nbsp;void</CODE></FONT></TD>
219<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#commitTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">commitTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
220
221<BR>
222&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
223</TR>
224<TR BGCOLOR="white" CLASS="TableRowColor">
225<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
226<CODE>abstract &nbsp;boolean</CODE></FONT></TD>
227<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#needsTaskCommit(org.apache.hadoop.mapred.TaskAttemptContext)">needsTaskCommit</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
228
229<BR>
230&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Check whether task needs a commit</TD>
231</TR>
232<TR BGCOLOR="white" CLASS="TableRowColor">
233<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
234<CODE>&nbsp;boolean</CODE></FONT></TD>
235<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#needsTaskCommit(org.apache.hadoop.mapreduce.TaskAttemptContext)">needsTaskCommit</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
236
237<BR>
238&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
239</TR>
240<TR BGCOLOR="white" CLASS="TableRowColor">
241<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
242<CODE>abstract &nbsp;void</CODE></FONT></TD>
243<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#setupJob(org.apache.hadoop.mapred.JobContext)">setupJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred">JobContext</A>&nbsp;jobContext)</CODE>
244
245<BR>
246&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;For the framework to setup the job output during initialization</TD>
247</TR>
248<TR BGCOLOR="white" CLASS="TableRowColor">
249<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
250<CODE>&nbsp;void</CODE></FONT></TD>
251<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#setupJob(org.apache.hadoop.mapreduce.JobContext)">setupJob</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;jobContext)</CODE>
252
253<BR>
254&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
255</TR>
256<TR BGCOLOR="white" CLASS="TableRowColor">
257<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
258<CODE>abstract &nbsp;void</CODE></FONT></TD>
259<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#setupTask(org.apache.hadoop.mapred.TaskAttemptContext)">setupTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
260
261<BR>
262&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Sets up output for the task.</TD>
263</TR>
264<TR BGCOLOR="white" CLASS="TableRowColor">
265<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
266<CODE>&nbsp;void</CODE></FONT></TD>
267<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/OutputCommitter.html#setupTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">setupTask</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)</CODE>
268
269<BR>
270&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;This method implements the new interface by calling the old method.</TD>
271</TR>
272</TABLE>
273&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
274<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
275<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
276<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>
277</TR>
278<TR BGCOLOR="white" CLASS="TableRowColor">
279<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>
280</TR>
281</TABLE>
282&nbsp;
283<P>
284
285<!-- ========= CONSTRUCTOR DETAIL ======== -->
286
287<A NAME="constructor_detail"><!-- --></A>
288<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
289<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
290<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
291<B>Constructor Detail</B></FONT></TH>
292</TR>
293</TABLE>
294
295<A NAME="OutputCommitter()"><!-- --></A><H3>
296OutputCommitter</H3>
297<PRE>
298public <B>OutputCommitter</B>()</PRE>
299<DL>
300<DD><B>Deprecated.</B>&nbsp;</DL>
301
302<!-- ============ METHOD DETAIL ========== -->
303
304<A NAME="method_detail"><!-- --></A>
305<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
306<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
307<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
308<B>Method Detail</B></FONT></TH>
309</TR>
310</TABLE>
311
312<A NAME="setupJob(org.apache.hadoop.mapred.JobContext)"><!-- --></A><H3>
313setupJob</H3>
314<PRE>
315public abstract void <B>setupJob</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred">JobContext</A>&nbsp;jobContext)
316                       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>
317<DL>
318<DD><B>Deprecated.</B>&nbsp;<DD>For the framework to setup the job output during initialization
319<P>
320<DD><DL>
321<DT><B>Parameters:</B><DD><CODE>jobContext</CODE> - Context of the job whose output is being written.
322<DT><B>Throws:</B>
323<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if temporary output could not be created</DL>
324</DD>
325</DL>
326<HR>
327
328<A NAME="cleanupJob(org.apache.hadoop.mapred.JobContext)"><!-- --></A><H3>
329cleanupJob</H3>
330<PRE>
331public abstract void <B>cleanupJob</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred">JobContext</A>&nbsp;jobContext)
332                         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>
333<DL>
334<DD><B>Deprecated.</B>&nbsp;<DD>For cleaning up the job's output after job completion
335<P>
336<DD><DL>
337<DT><B>Parameters:</B><DD><CODE>jobContext</CODE> - Context of the job whose output is being written.
338<DT><B>Throws:</B>
339<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>
340</DD>
341</DL>
342<HR>
343
344<A NAME="setupTask(org.apache.hadoop.mapred.TaskAttemptContext)"><!-- --></A><H3>
345setupTask</H3>
346<PRE>
347public abstract void <B>setupTask</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)
348                        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>
349<DL>
350<DD><B>Deprecated.</B>&nbsp;<DD>Sets up output for the task.
351<P>
352<DD><DL>
353<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> - Context of the task whose output is being written.
354<DT><B>Throws:</B>
355<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>
356</DD>
357</DL>
358<HR>
359
360<A NAME="needsTaskCommit(org.apache.hadoop.mapred.TaskAttemptContext)"><!-- --></A><H3>
361needsTaskCommit</H3>
362<PRE>
363public abstract boolean <B>needsTaskCommit</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)
364                                 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>
365<DL>
366<DD><B>Deprecated.</B>&nbsp;<DD>Check whether task needs a commit
367<P>
368<DD><DL>
369<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> -
370<DT><B>Returns:</B><DD>true/false
371<DT><B>Throws:</B>
372<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>
373</DD>
374</DL>
375<HR>
376
377<A NAME="commitTask(org.apache.hadoop.mapred.TaskAttemptContext)"><!-- --></A><H3>
378commitTask</H3>
379<PRE>
380public abstract void <B>commitTask</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)
381                         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>
382<DL>
383<DD><B>Deprecated.</B>&nbsp;<DD>To promote the task's temporary output to final output location
384 
385 The task's output is moved to the job's output directory.
386<P>
387<DD><DL>
388<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> - Context of the task whose output is being written.
389<DT><B>Throws:</B>
390<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if commit is not</DL>
391</DD>
392</DL>
393<HR>
394
395<A NAME="abortTask(org.apache.hadoop.mapred.TaskAttemptContext)"><!-- --></A><H3>
396abortTask</H3>
397<PRE>
398public abstract void <B>abortTask</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptContext.html" title="class in org.apache.hadoop.mapred">TaskAttemptContext</A>&nbsp;taskContext)
399                        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>
400<DL>
401<DD><B>Deprecated.</B>&nbsp;<DD>Discard the task output
402<P>
403<DD><DL>
404<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> -
405<DT><B>Throws:</B>
406<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>
407</DD>
408</DL>
409<HR>
410
411<A NAME="setupJob(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
412setupJob</H3>
413<PRE>
414public final void <B>setupJob</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;jobContext)
415                    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>
416<DL>
417<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
418 that the input types are different between the new and old apis and this
419 is a bridge between the two.
420<P>
421<DD><DL>
422<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#setupJob(org.apache.hadoop.mapreduce.JobContext)">setupJob</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
423</DD>
424<DD><DL>
425<DT><B>Parameters:</B><DD><CODE>jobContext</CODE> - Context of the job whose output is being written.
426<DT><B>Throws:</B>
427<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if temporary output could not be created</DL>
428</DD>
429</DL>
430<HR>
431
432<A NAME="cleanupJob(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
433cleanupJob</H3>
434<PRE>
435public final void <B>cleanupJob</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)
436                      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>
437<DL>
438<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
439 that the input types are different between the new and old apis and this
440 is a bridge between the two.
441<P>
442<DD><DL>
443<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#cleanupJob(org.apache.hadoop.mapreduce.JobContext)">cleanupJob</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
444</DD>
445<DD><DL>
446<DT><B>Parameters:</B><DD><CODE>context</CODE> - Context of the job whose output is being written.
447<DT><B>Throws:</B>
448<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>
449</DD>
450</DL>
451<HR>
452
453<A NAME="setupTask(org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
454setupTask</H3>
455<PRE>
456public final void <B>setupTask</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)
457                     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>
458<DL>
459<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
460 that the input types are different between the new and old apis and this
461 is a bridge between the two.
462<P>
463<DD><DL>
464<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#setupTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">setupTask</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
465</DD>
466<DD><DL>
467<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> - Context of the task whose output is being written.
468<DT><B>Throws:</B>
469<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>
470</DD>
471</DL>
472<HR>
473
474<A NAME="needsTaskCommit(org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
475needsTaskCommit</H3>
476<PRE>
477public final boolean <B>needsTaskCommit</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)
478                              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>
479<DL>
480<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
481 that the input types are different between the new and old apis and this
482 is a bridge between the two.
483<P>
484<DD><DL>
485<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#needsTaskCommit(org.apache.hadoop.mapreduce.TaskAttemptContext)">needsTaskCommit</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
486</DD>
487<DD><DL>
488
489<DT><B>Returns:</B><DD>true/false
490<DT><B>Throws:</B>
491<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>
492</DD>
493</DL>
494<HR>
495
496<A NAME="commitTask(org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
497commitTask</H3>
498<PRE>
499public final void <B>commitTask</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)
500                      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>
501<DL>
502<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
503 that the input types are different between the new and old apis and this
504 is a bridge between the two.
505<P>
506<DD><DL>
507<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#commitTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">commitTask</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
508</DD>
509<DD><DL>
510<DT><B>Parameters:</B><DD><CODE>taskContext</CODE> - Context of the task whose output is being written.
511<DT><B>Throws:</B>
512<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if commit is not</DL>
513</DD>
514</DL>
515<HR>
516
517<A NAME="abortTask(org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
518abortTask</H3>
519<PRE>
520public final void <B>abortTask</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;taskContext)
521                     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>
522<DL>
523<DD><B>Deprecated.</B>&nbsp;<DD>This method implements the new interface by calling the old method. Note
524 that the input types are different between the new and old apis and this
525 is a bridge between the two.
526<P>
527<DD><DL>
528<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html#abortTask(org.apache.hadoop.mapreduce.TaskAttemptContext)">abortTask</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></DL>
529</DD>
530<DD><DL>
531
532<DT><B>Throws:</B>
533<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>
534</DD>
535</DL>
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