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7JobContext (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapreduce</FONT>
92<BR>
93Class JobContext</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.JobContext</B>
97</PRE>
98<DL>
99<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>, <A HREF="../../../../org/apache/hadoop/mapred/JobContext.html" title="class in org.apache.hadoop.mapred">JobContext</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A></DD>
100</DL>
101<HR>
102<DL>
103<DT><PRE>public class <B>JobContext</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
104</PRE>
105
106<P>
107A read-only view of the job that is provided to the tasks while they
108 are running.
109<P>
110
111<P>
112<HR>
113
114<P>
115<!-- =========== FIELD SUMMARY =========== -->
116
117<A NAME="field_summary"><!-- --></A>
118<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
119<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
120<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
121<B>Field 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>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>
126<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#COMBINE_CLASS_ATTR">COMBINE_CLASS_ATTR</A></B></CODE>
127
128<BR>
129&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
130</TR>
131<TR BGCOLOR="white" CLASS="TableRowColor">
132<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
133<CODE>protected &nbsp;<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A></CODE></FONT></TD>
134<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#conf">conf</A></B></CODE>
135
136<BR>
137&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
138</TR>
139<TR BGCOLOR="white" CLASS="TableRowColor">
140<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
141<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>
142<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#INPUT_FORMAT_CLASS_ATTR">INPUT_FORMAT_CLASS_ATTR</A></B></CODE>
143
144<BR>
145&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
146</TR>
147<TR BGCOLOR="white" CLASS="TableRowColor">
148<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
149<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>
150<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#MAP_CLASS_ATTR">MAP_CLASS_ATTR</A></B></CODE>
151
152<BR>
153&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
154</TR>
155<TR BGCOLOR="white" CLASS="TableRowColor">
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157<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>
158<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#OUTPUT_FORMAT_CLASS_ATTR">OUTPUT_FORMAT_CLASS_ATTR</A></B></CODE>
159
160<BR>
161&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
162</TR>
163<TR BGCOLOR="white" CLASS="TableRowColor">
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165<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>
166<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#PARTITIONER_CLASS_ATTR">PARTITIONER_CLASS_ATTR</A></B></CODE>
167
168<BR>
169&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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171<TR BGCOLOR="white" CLASS="TableRowColor">
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173<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>
174<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#REDUCE_CLASS_ATTR">REDUCE_CLASS_ATTR</A></B></CODE>
175
176<BR>
177&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
178</TR>
179</TABLE>
180&nbsp;
181<!-- ======== CONSTRUCTOR SUMMARY ======== -->
182
183<A NAME="constructor_summary"><!-- --></A>
184<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
185<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
186<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
187<B>Constructor Summary</B></FONT></TH>
188</TR>
189<TR BGCOLOR="white" CLASS="TableRowColor">
190<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#JobContext(org.apache.hadoop.conf.Configuration, org.apache.hadoop.mapreduce.JobID)">JobContext</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
191           <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;jobId)</CODE>
192
193<BR>
194&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
195</TR>
196</TABLE>
197&nbsp;
198<!-- ========== METHOD SUMMARY =========== -->
199
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202<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
203<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
204<B>Method Summary</B></FONT></TH>
205</TR>
206<TR BGCOLOR="white" CLASS="TableRowColor">
207<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
208<CODE>&nbsp;<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>&lt;?,?,?,?&gt;&gt;</CODE></FONT></TD>
209<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getCombinerClass()">getCombinerClass</A></B>()</CODE>
210
211<BR>
212&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the combiner class for the job.</TD>
213</TR>
214<TR BGCOLOR="white" CLASS="TableRowColor">
215<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
216<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A></CODE></FONT></TD>
217<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getConfiguration()">getConfiguration</A></B>()</CODE>
218
219<BR>
220&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the configuration for the job.</TD>
221</TR>
222<TR BGCOLOR="white" CLASS="TableRowColor">
223<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
224<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&lt;?&gt;</CODE></FONT></TD>
225<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getGroupingComparator()">getGroupingComparator</A></B>()</CODE>
226
227<BR>
228&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the user defined <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A> comparator for
229 grouping keys of inputs to the reduce.</TD>
230</TR>
231<TR BGCOLOR="white" CLASS="TableRowColor">
232<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
233<CODE>&nbsp;<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>&lt;?,?&gt;&gt;</CODE></FONT></TD>
234<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getInputFormatClass()">getInputFormatClass</A></B>()</CODE>
235
236<BR>
237&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> class for the job.</TD>
238</TR>
239<TR BGCOLOR="white" CLASS="TableRowColor">
240<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
241<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>
242<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJar()">getJar</A></B>()</CODE>
243
244<BR>
245&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the pathname of the job's jar.</TD>
246</TR>
247<TR BGCOLOR="white" CLASS="TableRowColor">
248<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
249<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A></CODE></FONT></TD>
250<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobID()">getJobID</A></B>()</CODE>
251
252<BR>
253&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the unique ID for the job.</TD>
254</TR>
255<TR BGCOLOR="white" CLASS="TableRowColor">
256<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
257<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>
258<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobName()">getJobName</A></B>()</CODE>
259
260<BR>
261&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the user-specified job name.</TD>
262</TR>
263<TR BGCOLOR="white" CLASS="TableRowColor">
264<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
265<CODE>&nbsp;<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;</CODE></FONT></TD>
266<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputKeyClass()">getMapOutputKeyClass</A></B>()</CODE>
267
268<BR>
269&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the key class for the map output data.</TD>
270</TR>
271<TR BGCOLOR="white" CLASS="TableRowColor">
272<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
273<CODE>&nbsp;<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;</CODE></FONT></TD>
274<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputValueClass()">getMapOutputValueClass</A></B>()</CODE>
275
276<BR>
277&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value class for the map output data.</TD>
278</TR>
279<TR BGCOLOR="white" CLASS="TableRowColor">
280<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
281<CODE>&nbsp;<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>&lt;?,?,?,?&gt;&gt;</CODE></FONT></TD>
282<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapperClass()">getMapperClass</A></B>()</CODE>
283
284<BR>
285&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> class for the job.</TD>
286</TR>
287<TR BGCOLOR="white" CLASS="TableRowColor">
288<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
289<CODE>&nbsp;int</CODE></FONT></TD>
290<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getNumReduceTasks()">getNumReduceTasks</A></B>()</CODE>
291
292<BR>
293&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get configured the number of reduce tasks for this job.</TD>
294</TR>
295<TR BGCOLOR="white" CLASS="TableRowColor">
296<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
297<CODE>&nbsp;<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>&lt;?,?&gt;&gt;</CODE></FONT></TD>
298<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputFormatClass()">getOutputFormatClass</A></B>()</CODE>
299
300<BR>
301&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputFormat</CODE></A> class for the job.</TD>
302</TR>
303<TR BGCOLOR="white" CLASS="TableRowColor">
304<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
305<CODE>&nbsp;<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;</CODE></FONT></TD>
306<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputKeyClass()">getOutputKeyClass</A></B>()</CODE>
307
308<BR>
309&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the key class for the job output data.</TD>
310</TR>
311<TR BGCOLOR="white" CLASS="TableRowColor">
312<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
313<CODE>&nbsp;<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;</CODE></FONT></TD>
314<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputValueClass()">getOutputValueClass</A></B>()</CODE>
315
316<BR>
317&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value class for job outputs.</TD>
318</TR>
319<TR BGCOLOR="white" CLASS="TableRowColor">
320<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
321<CODE>&nbsp;<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>&lt;?,?&gt;&gt;</CODE></FONT></TD>
322<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getPartitionerClass()">getPartitionerClass</A></B>()</CODE>
323
324<BR>
325&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce"><CODE>Partitioner</CODE></A> class for the job.</TD>
326</TR>
327<TR BGCOLOR="white" CLASS="TableRowColor">
328<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
329<CODE>&nbsp;<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>&lt;?,?,?,?&gt;&gt;</CODE></FONT></TD>
330<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getReducerClass()">getReducerClass</A></B>()</CODE>
331
332<BR>
333&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> class for the job.</TD>
334</TR>
335<TR BGCOLOR="white" CLASS="TableRowColor">
336<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
337<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&lt;?&gt;</CODE></FONT></TD>
338<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getSortComparator()">getSortComparator</A></B>()</CODE>
339
340<BR>
341&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A> comparator used to compare keys.</TD>
342</TR>
343<TR BGCOLOR="white" CLASS="TableRowColor">
344<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
345<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A></CODE></FONT></TD>
346<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getWorkingDirectory()">getWorkingDirectory</A></B>()</CODE>
347
348<BR>
349&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current working directory for the default file system.</TD>
350</TR>
351</TABLE>
352&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
353<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
354<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
355<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>
356</TR>
357<TR BGCOLOR="white" CLASS="TableRowColor">
358<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>
359</TR>
360</TABLE>
361&nbsp;
362<P>
363
364<!-- ============ FIELD DETAIL =========== -->
365
366<A NAME="field_detail"><!-- --></A>
367<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
368<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
369<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
370<B>Field Detail</B></FONT></TH>
371</TR>
372</TABLE>
373
374<A NAME="INPUT_FORMAT_CLASS_ATTR"><!-- --></A><H3>
375INPUT_FORMAT_CLASS_ATTR</H3>
376<PRE>
377protected 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>INPUT_FORMAT_CLASS_ATTR</B></PRE>
378<DL>
379<DL>
380<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.INPUT_FORMAT_CLASS_ATTR">Constant Field Values</A></DL>
381</DL>
382<HR>
383
384<A NAME="MAP_CLASS_ATTR"><!-- --></A><H3>
385MAP_CLASS_ATTR</H3>
386<PRE>
387protected static final <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>MAP_CLASS_ATTR</B></PRE>
388<DL>
389<DL>
390<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.MAP_CLASS_ATTR">Constant Field Values</A></DL>
391</DL>
392<HR>
393
394<A NAME="COMBINE_CLASS_ATTR"><!-- --></A><H3>
395COMBINE_CLASS_ATTR</H3>
396<PRE>
397protected 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>COMBINE_CLASS_ATTR</B></PRE>
398<DL>
399<DL>
400<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.COMBINE_CLASS_ATTR">Constant Field Values</A></DL>
401</DL>
402<HR>
403
404<A NAME="REDUCE_CLASS_ATTR"><!-- --></A><H3>
405REDUCE_CLASS_ATTR</H3>
406<PRE>
407protected 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>REDUCE_CLASS_ATTR</B></PRE>
408<DL>
409<DL>
410<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.REDUCE_CLASS_ATTR">Constant Field Values</A></DL>
411</DL>
412<HR>
413
414<A NAME="OUTPUT_FORMAT_CLASS_ATTR"><!-- --></A><H3>
415OUTPUT_FORMAT_CLASS_ATTR</H3>
416<PRE>
417protected 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>OUTPUT_FORMAT_CLASS_ATTR</B></PRE>
418<DL>
419<DL>
420<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.OUTPUT_FORMAT_CLASS_ATTR">Constant Field Values</A></DL>
421</DL>
422<HR>
423
424<A NAME="PARTITIONER_CLASS_ATTR"><!-- --></A><H3>
425PARTITIONER_CLASS_ATTR</H3>
426<PRE>
427protected 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>PARTITIONER_CLASS_ATTR</B></PRE>
428<DL>
429<DL>
430<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.mapreduce.JobContext.PARTITIONER_CLASS_ATTR">Constant Field Values</A></DL>
431</DL>
432<HR>
433
434<A NAME="conf"><!-- --></A><H3>
435conf</H3>
436<PRE>
437protected final <A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> <B>conf</B></PRE>
438<DL>
439<DL>
440</DL>
441</DL>
442
443<!-- ========= CONSTRUCTOR DETAIL ======== -->
444
445<A NAME="constructor_detail"><!-- --></A>
446<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
447<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
448<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
449<B>Constructor Detail</B></FONT></TH>
450</TR>
451</TABLE>
452
453<A NAME="JobContext(org.apache.hadoop.conf.Configuration, org.apache.hadoop.mapreduce.JobID)"><!-- --></A><H3>
454JobContext</H3>
455<PRE>
456public <B>JobContext</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
457                  <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;jobId)</PRE>
458<DL>
459</DL>
460
461<!-- ============ METHOD DETAIL ========== -->
462
463<A NAME="method_detail"><!-- --></A>
464<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
465<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
466<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
467<B>Method Detail</B></FONT></TH>
468</TR>
469</TABLE>
470
471<A NAME="getConfiguration()"><!-- --></A><H3>
472getConfiguration</H3>
473<PRE>
474public <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> <B>getConfiguration</B>()</PRE>
475<DL>
476<DD>Return the configuration for the job.
477<P>
478<DD><DL>
479
480<DT><B>Returns:</B><DD>the shared configuration object</DL>
481</DD>
482</DL>
483<HR>
484
485<A NAME="getJobID()"><!-- --></A><H3>
486getJobID</H3>
487<PRE>
488public <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A> <B>getJobID</B>()</PRE>
489<DL>
490<DD>Get the unique ID for the job.
491<P>
492<DD><DL>
493
494<DT><B>Returns:</B><DD>the object with the job id</DL>
495</DD>
496</DL>
497<HR>
498
499<A NAME="getNumReduceTasks()"><!-- --></A><H3>
500getNumReduceTasks</H3>
501<PRE>
502public int <B>getNumReduceTasks</B>()</PRE>
503<DL>
504<DD>Get configured the number of reduce tasks for this job. Defaults to
505 <code>1</code>.
506<P>
507<DD><DL>
508
509<DT><B>Returns:</B><DD>the number of reduce tasks for this job.</DL>
510</DD>
511</DL>
512<HR>
513
514<A NAME="getWorkingDirectory()"><!-- --></A><H3>
515getWorkingDirectory</H3>
516<PRE>
517public <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A> <B>getWorkingDirectory</B>()
518                         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>
519<DL>
520<DD>Get the current working directory for the default file system.
521<P>
522<DD><DL>
523
524<DT><B>Returns:</B><DD>the directory name.
525<DT><B>Throws:</B>
526<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>
527</DD>
528</DL>
529<HR>
530
531<A NAME="getOutputKeyClass()"><!-- --></A><H3>
532getOutputKeyClass</H3>
533<PRE>
534public <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; <B>getOutputKeyClass</B>()</PRE>
535<DL>
536<DD>Get the key class for the job output data.
537<P>
538<DD><DL>
539
540<DT><B>Returns:</B><DD>the key class for the job output data.</DL>
541</DD>
542</DL>
543<HR>
544
545<A NAME="getOutputValueClass()"><!-- --></A><H3>
546getOutputValueClass</H3>
547<PRE>
548public <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; <B>getOutputValueClass</B>()</PRE>
549<DL>
550<DD>Get the value class for job outputs.
551<P>
552<DD><DL>
553
554<DT><B>Returns:</B><DD>the value class for job outputs.</DL>
555</DD>
556</DL>
557<HR>
558
559<A NAME="getMapOutputKeyClass()"><!-- --></A><H3>
560getMapOutputKeyClass</H3>
561<PRE>
562public <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; <B>getMapOutputKeyClass</B>()</PRE>
563<DL>
564<DD>Get the key class for the map output data. If it is not set, use the
565 (final) output key class. This allows the map output key class to be
566 different than the final output key class.
567<P>
568<DD><DL>
569
570<DT><B>Returns:</B><DD>the map output key class.</DL>
571</DD>
572</DL>
573<HR>
574
575<A NAME="getMapOutputValueClass()"><!-- --></A><H3>
576getMapOutputValueClass</H3>
577<PRE>
578public <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; <B>getMapOutputValueClass</B>()</PRE>
579<DL>
580<DD>Get the value class for the map output data. If it is not set, use the
581 (final) output value class This allows the map output value class to be
582 different than the final output value class.
583<P>
584<DD><DL>
585
586<DT><B>Returns:</B><DD>the map output value class.</DL>
587</DD>
588</DL>
589<HR>
590
591<A NAME="getJobName()"><!-- --></A><H3>
592getJobName</H3>
593<PRE>
594public <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>getJobName</B>()</PRE>
595<DL>
596<DD>Get the user-specified job name. This is only used to identify the
597 job to the user.
598<P>
599<DD><DL>
600
601<DT><B>Returns:</B><DD>the job's name, defaulting to "".</DL>
602</DD>
603</DL>
604<HR>
605
606<A NAME="getInputFormatClass()"><!-- --></A><H3>
607getInputFormatClass</H3>
608<PRE>
609public <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>&lt;?,?&gt;&gt; <B>getInputFormatClass</B>()
610                                                      throws <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>
611<DL>
612<DD>Get the <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> class for the job.
613<P>
614<DD><DL>
615
616<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> class for the job.
617<DT><B>Throws:</B>
618<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>
619</DD>
620</DL>
621<HR>
622
623<A NAME="getMapperClass()"><!-- --></A><H3>
624getMapperClass</H3>
625<PRE>
626public <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>&lt;?,?,?,?&gt;&gt; <B>getMapperClass</B>()
627                                                throws <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>
628<DL>
629<DD>Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> class for the job.
630<P>
631<DD><DL>
632
633<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> class for the job.
634<DT><B>Throws:</B>
635<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>
636</DD>
637</DL>
638<HR>
639
640<A NAME="getCombinerClass()"><!-- --></A><H3>
641getCombinerClass</H3>
642<PRE>
643public <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>&lt;?,?,?,?&gt;&gt; <B>getCombinerClass</B>()
644                                                   throws <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>
645<DL>
646<DD>Get the combiner class for the job.
647<P>
648<DD><DL>
649
650<DT><B>Returns:</B><DD>the combiner class for the job.
651<DT><B>Throws:</B>
652<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>
653</DD>
654</DL>
655<HR>
656
657<A NAME="getReducerClass()"><!-- --></A><H3>
658getReducerClass</H3>
659<PRE>
660public <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>&lt;?,?,?,?&gt;&gt; <B>getReducerClass</B>()
661                                                  throws <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>
662<DL>
663<DD>Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> class for the job.
664<P>
665<DD><DL>
666
667<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> class for the job.
668<DT><B>Throws:</B>
669<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>
670</DD>
671</DL>
672<HR>
673
674<A NAME="getOutputFormatClass()"><!-- --></A><H3>
675getOutputFormatClass</H3>
676<PRE>
677public <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>&lt;?,?&gt;&gt; <B>getOutputFormatClass</B>()
678                                                        throws <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>
679<DL>
680<DD>Get the <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputFormat</CODE></A> class for the job.
681<P>
682<DD><DL>
683
684<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/mapreduce/OutputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>OutputFormat</CODE></A> class for the job.
685<DT><B>Throws:</B>
686<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>
687</DD>
688</DL>
689<HR>
690
691<A NAME="getPartitionerClass()"><!-- --></A><H3>
692getPartitionerClass</H3>
693<PRE>
694public <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>&lt;?,?&gt;&gt; <B>getPartitionerClass</B>()
695                                                      throws <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>
696<DL>
697<DD>Get the <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce"><CODE>Partitioner</CODE></A> class for the job.
698<P>
699<DD><DL>
700
701<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/mapreduce/Partitioner.html" title="class in org.apache.hadoop.mapreduce"><CODE>Partitioner</CODE></A> class for the job.
702<DT><B>Throws:</B>
703<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>
704</DD>
705</DL>
706<HR>
707
708<A NAME="getSortComparator()"><!-- --></A><H3>
709getSortComparator</H3>
710<PRE>
711public <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&lt;?&gt; <B>getSortComparator</B>()</PRE>
712<DL>
713<DD>Get the <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A> comparator used to compare keys.
714<P>
715<DD><DL>
716
717<DT><B>Returns:</B><DD>the <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A> comparator used to compare keys.</DL>
718</DD>
719</DL>
720<HR>
721
722<A NAME="getJar()"><!-- --></A><H3>
723getJar</H3>
724<PRE>
725public <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>
726<DL>
727<DD>Get the pathname of the job's jar.
728<P>
729<DD><DL>
730
731<DT><B>Returns:</B><DD>the pathname</DL>
732</DD>
733</DL>
734<HR>
735
736<A NAME="getGroupingComparator()"><!-- --></A><H3>
737getGroupingComparator</H3>
738<PRE>
739public <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&lt;?&gt; <B>getGroupingComparator</B>()</PRE>
740<DL>
741<DD>Get the user defined <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A> comparator for
742 grouping keys of inputs to the reduce.
743<P>
744<DD><DL>
745
746<DT><B>Returns:</B><DD>comparator set by the user for grouping values.<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/hadoop/mapreduce/Job.html#setGroupingComparatorClass(java.lang.Class)"><CODE>for details.</CODE></A></DL>
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