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7TaskInputOutputContext (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapreduce</FONT>
92<BR>
93Class TaskInputOutputContext&lt;KEYIN,VALUEIN,KEYOUT,VALUEOUT&gt;</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.JobContext</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.TaskAttemptContext</A>
98          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.TaskInputOutputContext&lt;KEYIN,VALUEIN,KEYOUT,VALUEOUT&gt;</B>
99</PRE>
100<DL>
101<DT><DT><B>Type Parameters:</B><DD><CODE>KEYIN</CODE> - the input key type for the task<DD><CODE>VALUEIN</CODE> - the input value type for the task<DD><CODE>KEYOUT</CODE> - the output key type for the task<DD><CODE>VALUEOUT</CODE> - the output value type for the task</DL>
102<DL>
103<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A></DD>
104</DL>
105<DL>
106<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/hadoop/mapreduce/MapContext.html" title="class in org.apache.hadoop.mapreduce">MapContext</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/ReduceContext.html" title="class in org.apache.hadoop.mapreduce">ReduceContext</A></DD>
107</DL>
108<HR>
109<DL>
110<DT><PRE>public abstract class <B>TaskInputOutputContext&lt;KEYIN,VALUEIN,KEYOUT,VALUEOUT&gt;</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A><DT>implements <A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A></DL>
111</PRE>
112
113<P>
114A context object that allows input and output from the task. It is only
115 supplied to the <A HREF="../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> or <A HREF="../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A>.
116<P>
117
118<P>
119<HR>
120
121<P>
122<!-- =========== FIELD SUMMARY =========== -->
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127<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
128<B>Field Summary</B></FONT></TH>
129</TR>
130</TABLE>
131&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.JobContext"><!-- --></A>
132<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
133<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
134<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></B></TH>
135</TR>
136<TR BGCOLOR="white" CLASS="TableRowColor">
137<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#COMBINE_CLASS_ATTR">COMBINE_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#conf">conf</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#INPUT_FORMAT_CLASS_ATTR">INPUT_FORMAT_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#MAP_CLASS_ATTR">MAP_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#OUTPUT_FORMAT_CLASS_ATTR">OUTPUT_FORMAT_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#PARTITIONER_CLASS_ATTR">PARTITIONER_CLASS_ATTR</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#REDUCE_CLASS_ATTR">REDUCE_CLASS_ATTR</A></CODE></TD>
138</TR>
139</TABLE>
140&nbsp;
141<!-- ======== CONSTRUCTOR SUMMARY ======== -->
142
143<A NAME="constructor_summary"><!-- --></A>
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145<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
146<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
147<B>Constructor Summary</B></FONT></TH>
148</TR>
149<TR BGCOLOR="white" CLASS="TableRowColor">
150<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#TaskInputOutputContext(org.apache.hadoop.conf.Configuration, org.apache.hadoop.mapreduce.TaskAttemptID, org.apache.hadoop.mapreduce.RecordWriter, org.apache.hadoop.mapreduce.OutputCommitter, org.apache.hadoop.mapreduce.StatusReporter)">TaskInputOutputContext</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
151                       <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskid,
152                       <A HREF="../../../../org/apache/hadoop/mapreduce/RecordWriter.html" title="class in org.apache.hadoop.mapreduce">RecordWriter</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYOUT</A>,<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEOUT</A>&gt;&nbsp;output,
153                       <A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A>&nbsp;committer,
154                       <A HREF="../../../../org/apache/hadoop/mapreduce/StatusReporter.html" title="class in org.apache.hadoop.mapreduce">StatusReporter</A>&nbsp;reporter)</CODE>
155
156<BR>
157&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
158</TR>
159</TABLE>
160&nbsp;
161<!-- ========== METHOD SUMMARY =========== -->
162
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166<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
167<B>Method Summary</B></FONT></TH>
168</TR>
169<TR BGCOLOR="white" CLASS="TableRowColor">
170<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
171<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/Counter.html" title="class in org.apache.hadoop.mapreduce">Counter</A></CODE></FONT></TD>
172<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#getCounter(java.lang.Enum)">getCounter</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</A>&lt;?&gt;&nbsp;counterName)</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 ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
179<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/Counter.html" title="class in org.apache.hadoop.mapreduce">Counter</A></CODE></FONT></TD>
180<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#getCounter(java.lang.String, java.lang.String)">getCounter</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;groupName,
181           <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;counterName)</CODE>
182
183<BR>
184&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
185</TR>
186<TR BGCOLOR="white" CLASS="TableRowColor">
187<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
188<CODE>abstract &nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYIN</A></CODE></FONT></TD>
189<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#getCurrentKey()">getCurrentKey</A></B>()</CODE>
190
191<BR>
192&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current key.</TD>
193</TR>
194<TR BGCOLOR="white" CLASS="TableRowColor">
195<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
196<CODE>abstract &nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEIN</A></CODE></FONT></TD>
197<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#getCurrentValue()">getCurrentValue</A></B>()</CODE>
198
199<BR>
200&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current value.</TD>
201</TR>
202<TR BGCOLOR="white" CLASS="TableRowColor">
203<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
204<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A></CODE></FONT></TD>
205<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#getOutputCommitter()">getOutputCommitter</A></B>()</CODE>
206
207<BR>
208&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
209</TR>
210<TR BGCOLOR="white" CLASS="TableRowColor">
211<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
212<CODE>abstract &nbsp;boolean</CODE></FONT></TD>
213<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#nextKeyValue()">nextKeyValue</A></B>()</CODE>
214
215<BR>
216&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Advance to the next key, value pair, returning null if at end.</TD>
217</TR>
218<TR BGCOLOR="white" CLASS="TableRowColor">
219<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
220<CODE>&nbsp;void</CODE></FONT></TD>
221<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#progress()">progress</A></B>()</CODE>
222
223<BR>
224&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Report progress.</TD>
225</TR>
226<TR BGCOLOR="white" CLASS="TableRowColor">
227<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
228<CODE>&nbsp;void</CODE></FONT></TD>
229<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#setStatus(java.lang.String)">setStatus</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;status)</CODE>
230
231<BR>
232&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the current status of the task to the given string.</TD>
233</TR>
234<TR BGCOLOR="white" CLASS="TableRowColor">
235<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
236<CODE>&nbsp;void</CODE></FONT></TD>
237<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html#write(KEYOUT, VALUEOUT)">write</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYOUT</A>&nbsp;key,
238      <A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEOUT</A>&nbsp;value)</CODE>
239
240<BR>
241&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Generate an output key/value pair.</TD>
242</TR>
243</TABLE>
244&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.TaskAttemptContext"><!-- --></A>
245<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
246<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
247<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A></B></TH>
248</TR>
249<TR BGCOLOR="white" CLASS="TableRowColor">
250<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#getStatus()">getStatus</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#getTaskAttemptID()">getTaskAttemptID</A></CODE></TD>
251</TR>
252</TABLE>
253&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.JobContext"><!-- --></A>
254<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
255<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
256<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A></B></TH>
257</TR>
258<TR BGCOLOR="white" CLASS="TableRowColor">
259<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getCombinerClass()">getCombinerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getConfiguration()">getConfiguration</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getGroupingComparator()">getGroupingComparator</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getInputFormatClass()">getInputFormatClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJar()">getJar</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobID()">getJobID</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getJobName()">getJobName</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputKeyClass()">getMapOutputKeyClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapOutputValueClass()">getMapOutputValueClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getMapperClass()">getMapperClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getNumReduceTasks()">getNumReduceTasks</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputFormatClass()">getOutputFormatClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputKeyClass()">getOutputKeyClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getOutputValueClass()">getOutputValueClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getPartitionerClass()">getPartitionerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getReducerClass()">getReducerClass</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getSortComparator()">getSortComparator</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobContext.html#getWorkingDirectory()">getWorkingDirectory</A></CODE></TD>
260</TR>
261</TABLE>
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265<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>
266</TR>
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269</TR>
270</TABLE>
271&nbsp;
272<P>
273
274<!-- ========= CONSTRUCTOR DETAIL ======== -->
275
276<A NAME="constructor_detail"><!-- --></A>
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279<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
280<B>Constructor Detail</B></FONT></TH>
281</TR>
282</TABLE>
283
284<A NAME="TaskInputOutputContext(org.apache.hadoop.conf.Configuration, org.apache.hadoop.mapreduce.TaskAttemptID, org.apache.hadoop.mapreduce.RecordWriter, org.apache.hadoop.mapreduce.OutputCommitter, org.apache.hadoop.mapreduce.StatusReporter)"><!-- --></A><H3>
285TaskInputOutputContext</H3>
286<PRE>
287public <B>TaskInputOutputContext</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
288                              <A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</A>&nbsp;taskid,
289                              <A HREF="../../../../org/apache/hadoop/mapreduce/RecordWriter.html" title="class in org.apache.hadoop.mapreduce">RecordWriter</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYOUT</A>,<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEOUT</A>&gt;&nbsp;output,
290                              <A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A>&nbsp;committer,
291                              <A HREF="../../../../org/apache/hadoop/mapreduce/StatusReporter.html" title="class in org.apache.hadoop.mapreduce">StatusReporter</A>&nbsp;reporter)</PRE>
292<DL>
293</DL>
294
295<!-- ============ METHOD DETAIL ========== -->
296
297<A NAME="method_detail"><!-- --></A>
298<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
299<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
300<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
301<B>Method Detail</B></FONT></TH>
302</TR>
303</TABLE>
304
305<A NAME="nextKeyValue()"><!-- --></A><H3>
306nextKeyValue</H3>
307<PRE>
308public abstract boolean <B>nextKeyValue</B>()
309                              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>,
310                                     <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
311<DL>
312<DD>Advance to the next key, value pair, returning null if at end.
313<P>
314<DD><DL>
315</DL>
316</DD>
317<DD><DL>
318
319<DT><B>Returns:</B><DD>the key object that was read into, or null if no more
320<DT><B>Throws:</B>
321<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>
322<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
323</DD>
324</DL>
325<HR>
326
327<A NAME="getCurrentKey()"><!-- --></A><H3>
328getCurrentKey</H3>
329<PRE>
330public abstract <A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYIN</A> <B>getCurrentKey</B>()
331                             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>,
332                                    <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
333<DL>
334<DD>Get the current key.
335<P>
336<DD><DL>
337</DL>
338</DD>
339<DD><DL>
340
341<DT><B>Returns:</B><DD>the current key object or null if there isn't one
342<DT><B>Throws:</B>
343<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>
344<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
345</DD>
346</DL>
347<HR>
348
349<A NAME="getCurrentValue()"><!-- --></A><H3>
350getCurrentValue</H3>
351<PRE>
352public abstract <A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEIN</A> <B>getCurrentValue</B>()
353                                 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>,
354                                        <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
355<DL>
356<DD>Get the current value.
357<P>
358<DD><DL>
359</DL>
360</DD>
361<DD><DL>
362
363<DT><B>Returns:</B><DD>the value object that was read into
364<DT><B>Throws:</B>
365<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>
366<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
367</DD>
368</DL>
369<HR>
370
371<A NAME="write(java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="write(KEYOUT, VALUEOUT)"><!-- --></A><H3>
372write</H3>
373<PRE>
374public void <B>write</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">KEYOUT</A>&nbsp;key,
375                  <A HREF="../../../../org/apache/hadoop/mapreduce/TaskInputOutputContext.html" title="type parameter in TaskInputOutputContext">VALUEOUT</A>&nbsp;value)
376           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>,
377                  <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></PRE>
378<DL>
379<DD>Generate an output key/value pair.
380<P>
381<DD><DL>
382</DL>
383</DD>
384<DD><DL>
385
386<DT><B>Throws:</B>
387<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>
388<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</A></CODE></DL>
389</DD>
390</DL>
391<HR>
392
393<A NAME="getCounter(java.lang.Enum)"><!-- --></A><H3>
394getCounter</H3>
395<PRE>
396public <A HREF="../../../../org/apache/hadoop/mapreduce/Counter.html" title="class in org.apache.hadoop.mapreduce">Counter</A> <B>getCounter</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</A>&lt;?&gt;&nbsp;counterName)</PRE>
397<DL>
398<DD><DL>
399</DL>
400</DD>
401<DD><DL>
402</DL>
403</DD>
404</DL>
405<HR>
406
407<A NAME="getCounter(java.lang.String, java.lang.String)"><!-- --></A><H3>
408getCounter</H3>
409<PRE>
410public <A HREF="../../../../org/apache/hadoop/mapreduce/Counter.html" title="class in org.apache.hadoop.mapreduce">Counter</A> <B>getCounter</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;groupName,
411                          <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;counterName)</PRE>
412<DL>
413<DD><DL>
414</DL>
415</DD>
416<DD><DL>
417</DL>
418</DD>
419</DL>
420<HR>
421
422<A NAME="progress()"><!-- --></A><H3>
423progress</H3>
424<PRE>
425public void <B>progress</B>()</PRE>
426<DL>
427<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#progress()">TaskAttemptContext</A></CODE></B></DD>
428<DD>Report progress. The subtypes actually do work in this method.
429<P>
430<DD><DL>
431<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/util/Progressable.html#progress()">progress</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#progress()">progress</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A></CODE></DL>
432</DD>
433<DD><DL>
434</DL>
435</DD>
436</DL>
437<HR>
438
439<A NAME="setStatus(java.lang.String)"><!-- --></A><H3>
440setStatus</H3>
441<PRE>
442public void <B>setStatus</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;status)</PRE>
443<DL>
444<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#setStatus(java.lang.String)">TaskAttemptContext</A></CODE></B></DD>
445<DD>Set the current status of the task to the given string.
446<P>
447<DD><DL>
448<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html#setStatus(java.lang.String)">setStatus</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A></CODE></DL>
449</DD>
450<DD><DL>
451</DL>
452</DD>
453</DL>
454<HR>
455
456<A NAME="getOutputCommitter()"><!-- --></A><H3>
457getOutputCommitter</H3>
458<PRE>
459public <A HREF="../../../../org/apache/hadoop/mapreduce/OutputCommitter.html" title="class in org.apache.hadoop.mapreduce">OutputCommitter</A> <B>getOutputCommitter</B>()</PRE>
460<DL>
461<DD><DL>
462</DL>
463</DD>
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465</DL>
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