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40<a href="#Removed">REMOVED</a>&nbsp;|&nbsp;
41<a href="#Added">ADDED</a>&nbsp;|&nbsp;
42<a href="#Changed">CHANGED</a>
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47<!-- End of nav bar -->
48<H2>
49Package <A HREF="../../api/org/apache/hadoop/mapred/package-summary.html" target="_top"><tt>org.apache.hadoop.mapred</tt></A>
50</H2>
51<p>
52<a NAME="Removed"></a>
53<TABLE summary="Removed Classes" BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
54<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
55  <TD VALIGN="TOP" COLSPAN=2><FONT SIZE="+1"><B>Removed Classes</B></FONT></TD>
56</TR>
57<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
58  <TD VALIGN="TOP" WIDTH="25%">
59  <A NAME="JobShell"></A>
60  <nobr><A HREF="http://hadoop.apache.org/core/docs/r0.19.2/api/org/apache/hadoop/mapred/JobShell.html" target="_top"><tt>JobShell</tt></A></nobr>
61  </TD>
62  <TD VALIGN="TOP">Provide command line parsing for JobSubmission job submission looks like hadoop jar -libjars <comma seperated jars> -archives <comma seperated archives> -files <comma seperated files> inputjar args</TD>
63</TR>
64<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
65  <TD VALIGN="TOP" WIDTH="25%">
66  <A NAME="StatusHttpServer"></A>
67  <nobr><A HREF="http://hadoop.apache.org/core/docs/r0.19.2/api/org/apache/hadoop/mapred/StatusHttpServer.html" target="_top"><tt>StatusHttpServer</tt></A></nobr>
68  </TD>
69  <TD VALIGN="TOP">A mapred http server.</TD>
70</TR>
71<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
72  <TD VALIGN="TOP" WIDTH="25%">
73  <A NAME="StatusHttpServer.TaskGraphServlet"></A>
74  <nobr><A HREF="http://hadoop.apache.org/core/docs/r0.19.2/api/org/apache/hadoop/mapred/StatusHttpServer.TaskGraphServlet.html" target="_top"><tt>StatusHttpServer.TaskGraphServlet</tt></A></nobr>
75  </TD>
76  <TD VALIGN="TOP">The servlet that outputs svg graphics for map / reduce task statuses</TD>
77</TR>
78</TABLE>
79&nbsp;
80<p>
81<a NAME="Added"></a>
82<TABLE summary="Added Classes and Interfaces" BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
83<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
84  <TD VALIGN="TOP" COLSPAN=2><FONT SIZE="+1"><B>Added Classes and Interfaces</B></FONT></TD>
85</TR>
86<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
87  <TD VALIGN="TOP" WIDTH="25%">
88  <A NAME="MapReducePolicyProvider"></A>
89  <nobr><A HREF="../../api/org/apache/hadoop/mapred/MapReducePolicyProvider.html" target="_top"><tt>MapReducePolicyProvider</tt></A></nobr>
90  </TD>
91  <TD VALIGN="TOP"><A HREF="../../api/org/apache/hadoop/mapred/MapReducePolicyProvider/PolicyProvider.html" target="_top">PolicyProvider</A> for Map-Reduce protocols.</TD>
92</TR>
93<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
94  <TD VALIGN="TOP" WIDTH="25%">
95  <A NAME="RawKeyValueIterator"></A>
96  <nobr><A HREF="../../api/org/apache/hadoop/mapred/RawKeyValueIterator.html" target="_top"><tt><I>RawKeyValueIterator</I></tt></A></nobr>
97  </TD>
98  <TD VALIGN="TOP"><code>RawKeyValueIterator</code> is an iterator used to iterate over the raw keys and values during sort/merge of intermediate data.</TD>
99</TR>
100<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
101  <TD VALIGN="TOP" WIDTH="25%">
102  <A NAME="TIPStatus"></A>
103  <nobr><A HREF="../../api/org/apache/hadoop/mapred/TIPStatus.html" target="_top"><tt>TIPStatus</tt></A></nobr>
104  </TD>
105  <TD VALIGN="TOP">The states of a <A HREF="../../api/org/apache/hadoop/mapred/TIPStatus/TaskInProgress.html" target="_top">TaskInProgress</A> as seen by the JobTracker.</TD>
106</TR>
107<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
108  <TD VALIGN="TOP" WIDTH="25%">
109  <A NAME="TaskGraphServlet"></A>
110  <nobr><A HREF="../../api/org/apache/hadoop/mapred/TaskGraphServlet.html" target="_top"><tt>TaskGraphServlet</tt></A></nobr>
111  </TD>
112  <TD VALIGN="TOP">The servlet that outputs svg graphics for map / reduce task statuses</TD>
113</TR>
114</TABLE>
115&nbsp;
116<p>
117<a NAME="Changed"></a>
118<TABLE summary="Changed Classes and Interfaces" BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
119<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
120  <TD VALIGN="TOP" COLSPAN=2><FONT SIZE="+1"><B>Changed Classes and Interfaces</B></FONT></TD>
121</TR>
122<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
123  <TD VALIGN="TOP" WIDTH="25%">
124  <A NAME="ClusterStatus"></A>
125  <nobr><A HREF="org.apache.hadoop.mapred.ClusterStatus.html">ClusterStatus</A></nobr>
126  </TD>
127  <TD VALIGN="TOP">Status information on the current state of the Map-Reduce cluster.</TD>
128</TR>
129<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
130  <TD VALIGN="TOP" WIDTH="25%">
131  <A NAME="Counters"></A>
132  <nobr><A HREF="org.apache.hadoop.mapred.Counters.html">Counters</A></nobr>
133  </TD>
134  <TD VALIGN="TOP">A set of named counters.</TD>
135</TR>
136<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
137  <TD VALIGN="TOP" WIDTH="25%">
138  <A NAME="Counters.Counter"></A>
139  <nobr><A HREF="org.apache.hadoop.mapred.Counters.Counter.html">Counters.Counter</A></nobr>
140  </TD>
141  <TD VALIGN="TOP">A counter record comprising its name and value.</TD>
142</TR>
143<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
144  <TD VALIGN="TOP" WIDTH="25%">
145  <A NAME="Counters.Group"></A>
146  <nobr><A HREF="org.apache.hadoop.mapred.Counters.Group.html">Counters.Group</A></nobr>
147  </TD>
148  <TD VALIGN="TOP"><code>Group</code> of counters comprising of counters from a particular counter <A HREF="../../api/org/apache/hadoop/mapred/Counters/Group/Enum.html" target="_top">Enum</A> class.</TD>
149</TR>
150<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
151  <TD VALIGN="TOP" WIDTH="25%">
152  <A NAME="FileInputFormat"></A>
153  <nobr><A HREF="org.apache.hadoop.mapred.FileInputFormat.html">FileInputFormat</A></nobr>
154  </TD>
155  <TD VALIGN="TOP">A base class for file-based <A HREF="../../api/org/apache/hadoop/mapred/FileInputFormat/InputFormat.html" target="_top">InputFormat</A> </TD>
156</TR>
157<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
158  <TD VALIGN="TOP" WIDTH="25%">
159  <A NAME="FileOutputFormat"></A>
160  <nobr><A HREF="org.apache.hadoop.mapred.FileOutputFormat.html">FileOutputFormat</A></nobr>
161  </TD>
162  <TD VALIGN="TOP">A base class for <A HREF="../../api/org/apache/hadoop/mapred/FileOutputFormat/OutputFormat.html" target="_top">OutputFormat</A></TD>
163</TR>
164<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
165  <TD VALIGN="TOP" WIDTH="25%">
166  <A NAME="FileSplit"></A>
167  <nobr><A HREF="org.apache.hadoop.mapred.FileSplit.html">FileSplit</A></nobr>
168  </TD>
169  <TD VALIGN="TOP">A section of an input file.</TD>
170</TR>
171<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
172  <TD VALIGN="TOP" WIDTH="25%">
173  <A NAME="ID"></A>
174  <nobr><A HREF="org.apache.hadoop.mapred.ID.html">ID</A></nobr>
175  </TD>
176  <TD VALIGN="TOP">A general identifier which internally stores the id as an integer.</TD>
177</TR>
178<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
179  <TD VALIGN="TOP" WIDTH="25%">
180  <A NAME="InputFormat"></A>
181  <nobr><A HREF="org.apache.hadoop.mapred.InputFormat.html"><I>InputFormat</I></A></nobr>
182  </TD>
183  <TD VALIGN="TOP"><code>InputFormat</code> describes the input-specification for a Map-Reduce job.</TD>
184</TR>
185<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
186  <TD VALIGN="TOP" WIDTH="25%">
187  <A NAME="InputSplit"></A>
188  <nobr><A HREF="org.apache.hadoop.mapred.InputSplit.html"><I>InputSplit</I></A></nobr>
189  </TD>
190  <TD VALIGN="TOP"><code>InputSplit</code> represents the data to be processed by an individual <A HREF="../../api/org/apache/hadoop/mapred/InputSplit/Mapper.html" target="_top">Mapper</A> </TD>
191</TR>
192<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
193  <TD VALIGN="TOP" WIDTH="25%">
194  <A NAME="InvalidInputException"></A>
195  <nobr><A HREF="org.apache.hadoop.mapred.InvalidInputException.html">InvalidInputException</A></nobr>
196  </TD>
197  <TD VALIGN="TOP">This class wraps a list of problems with the input so that the user can get a list of problems together instead of finding and fixing them one by one.</TD>
198</TR>
199<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
200  <TD VALIGN="TOP" WIDTH="25%">
201  <A NAME="IsolationRunner"></A>
202  <nobr><A HREF="org.apache.hadoop.mapred.IsolationRunner.html">IsolationRunner</A></nobr>
203  </TD>
204  <TD>&nbsp;</TD>
205</TR>
206<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
207  <TD VALIGN="TOP" WIDTH="25%">
208  <A NAME="JobClient"></A>
209  <nobr><A HREF="org.apache.hadoop.mapred.JobClient.html">JobClient</A></nobr>
210  </TD>
211  <TD VALIGN="TOP"><code>JobClient</code> is the primary interface for the user-job to interact with the <A HREF="../../api/org/apache/hadoop/mapred/JobClient/JobTracker.html" target="_top">JobTracker</A> <code>JobClient</code> provides facilities to submit jobs track their progress access component-tasks' reports/logs get the Map-Reduce cluster status information etc.</TD>
212</TR>
213<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
214  <TD VALIGN="TOP" WIDTH="25%">
215  <A NAME="JobClient.TaskStatusFilter"></A>
216  <nobr><A HREF="org.apache.hadoop.mapred.JobClient.TaskStatusFilter.html">JobClient.TaskStatusFilter</A></nobr>
217  </TD>
218  <TD>&nbsp;</TD>
219</TR>
220<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
221  <TD VALIGN="TOP" WIDTH="25%">
222  <A NAME="JobConf"></A>
223  <nobr><A HREF="org.apache.hadoop.mapred.JobConf.html">JobConf</A></nobr>
224  </TD>
225  <TD VALIGN="TOP">A map/reduce job configuration.</TD>
226</TR>
227<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
228  <TD VALIGN="TOP" WIDTH="25%">
229  <A NAME="JobContext"></A>
230  <nobr><A HREF="org.apache.hadoop.mapred.JobContext.html">JobContext</A></nobr>
231  </TD>
232  <TD VALIGN="TOP">@deprecated Use <A HREF="../../api/org/apache/hadoop/mapreduce/JobContext.html" target="_top">org.apache.hadoop.mapreduce.JobContext</A> instead.</TD>
233</TR>
234<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
235  <TD VALIGN="TOP" WIDTH="25%">
236  <A NAME="JobHistory.JobInfo"></A>
237  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.JobInfo.html">JobHistory.JobInfo</A></nobr>
238  </TD>
239  <TD VALIGN="TOP">Helper class for logging or reading back events related to job start finish or failure.</TD>
240</TR>
241<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
242  <TD VALIGN="TOP" WIDTH="25%">
243  <A NAME="JobHistory.Keys"></A>
244  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.Keys.html">JobHistory.Keys</A></nobr>
245  </TD>
246  <TD VALIGN="TOP">Job history files contain key="value" pairs where keys belong to this enum.</TD>
247</TR>
248<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
249  <TD VALIGN="TOP" WIDTH="25%">
250  <A NAME="JobHistory.Listener"></A>
251  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.Listener.html"><I>JobHistory.Listener</I></A></nobr>
252  </TD>
253  <TD VALIGN="TOP">Callback interface for reading back log events from JobHistory.</TD>
254</TR>
255<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
256  <TD VALIGN="TOP" WIDTH="25%">
257  <A NAME="JobHistory.RecordTypes"></A>
258  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.RecordTypes.html">JobHistory.RecordTypes</A></nobr>
259  </TD>
260  <TD VALIGN="TOP">Record types are identifiers for each line of log in history files.</TD>
261</TR>
262<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
263  <TD VALIGN="TOP" WIDTH="25%">
264  <A NAME="JobHistory.Task"></A>
265  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.Task.html">JobHistory.Task</A></nobr>
266  </TD>
267  <TD VALIGN="TOP">Helper class for logging or reading back events related to Task's start finish or failure.</TD>
268</TR>
269<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
270  <TD VALIGN="TOP" WIDTH="25%">
271  <A NAME="JobHistory.Values"></A>
272  <nobr><A HREF="org.apache.hadoop.mapred.JobHistory.Values.html">JobHistory.Values</A></nobr>
273  </TD>
274  <TD VALIGN="TOP">This enum contains some of the values commonly used by history log events.</TD>
275</TR>
276<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
277  <TD VALIGN="TOP" WIDTH="25%">
278  <A NAME="JobID"></A>
279  <nobr><A HREF="org.apache.hadoop.mapred.JobID.html">JobID</A></nobr>
280  </TD>
281  <TD VALIGN="TOP">JobID represents the immutable and unique identifier for the job.</TD>
282</TR>
283<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
284  <TD VALIGN="TOP" WIDTH="25%">
285  <A NAME="JobPriority"></A>
286  <nobr><A HREF="org.apache.hadoop.mapred.JobPriority.html">JobPriority</A></nobr>
287  </TD>
288  <TD VALIGN="TOP">Used to describe the priority of the running job.</TD>
289</TR>
290<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
291  <TD VALIGN="TOP" WIDTH="25%">
292  <A NAME="JobProfile"></A>
293  <nobr><A HREF="org.apache.hadoop.mapred.JobProfile.html">JobProfile</A></nobr>
294  </TD>
295  <TD VALIGN="TOP">A JobProfile is a MapReduce primitive.</TD>
296</TR>
297<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
298  <TD VALIGN="TOP" WIDTH="25%">
299  <A NAME="JobTracker"></A>
300  <nobr><A HREF="org.apache.hadoop.mapred.JobTracker.html">JobTracker</A></nobr>
301  </TD>
302  <TD VALIGN="TOP">JobTracker is the central location for submitting and tracking MR jobs in a network environment.</TD>
303</TR>
304<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
305  <TD VALIGN="TOP" WIDTH="25%">
306  <A NAME="JobTracker.State"></A>
307  <nobr><A HREF="org.apache.hadoop.mapred.JobTracker.State.html">JobTracker.State</A></nobr>
308  </TD>
309  <TD>&nbsp;</TD>
310</TR>
311<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
312  <TD VALIGN="TOP" WIDTH="25%">
313  <A NAME="KeyValueLineRecordReader"></A>
314  <nobr><A HREF="org.apache.hadoop.mapred.KeyValueLineRecordReader.html">KeyValueLineRecordReader</A></nobr>
315  </TD>
316  <TD VALIGN="TOP">This class treats a line in the input as a key/value pair separated by a separator character.</TD>
317</TR>
318<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
319  <TD VALIGN="TOP" WIDTH="25%">
320  <A NAME="KeyValueTextInputFormat"></A>
321  <nobr><A HREF="org.apache.hadoop.mapred.KeyValueTextInputFormat.html">KeyValueTextInputFormat</A></nobr>
322  </TD>
323  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/KeyValueTextInputFormat/InputFormat.html" target="_top">InputFormat</A> for plain text files.</TD>
324</TR>
325<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
326  <TD VALIGN="TOP" WIDTH="25%">
327  <A NAME="LineRecordReader"></A>
328  <nobr><A HREF="org.apache.hadoop.mapred.LineRecordReader.html">LineRecordReader</A></nobr>
329  </TD>
330  <TD VALIGN="TOP">Treats keys as offset in file and value as line.</TD>
331</TR>
332<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
333  <TD VALIGN="TOP" WIDTH="25%">
334  <A NAME="MapFileOutputFormat"></A>
335  <nobr><A HREF="org.apache.hadoop.mapred.MapFileOutputFormat.html">MapFileOutputFormat</A></nobr>
336  </TD>
337  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/MapFileOutputFormat/OutputFormat.html" target="_top">OutputFormat</A> that writes <A HREF="../../api/org.apache.hadoop.mapred.MapFileOutputFormat.MapFile}s/.html" target="_top">MapFile}s</A></TD>
338</TR>
339<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
340  <TD VALIGN="TOP" WIDTH="25%">
341  <A NAME="MapRunnable"></A>
342  <nobr><A HREF="org.apache.hadoop.mapred.MapRunnable.html"><I>MapRunnable</I></A></nobr>
343  </TD>
344  <TD VALIGN="TOP">Expert: Generic interface for <A HREF="../../api/org.apache.hadoop.mapred.MapRunnable.Mapper}s/.html" target="_top"></TD>
345</TR>
346<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
347  <TD VALIGN="TOP" WIDTH="25%">
348  <A NAME="MapRunner"></A>
349  <nobr><A HREF="org.apache.hadoop.mapred.MapRunner.html">MapRunner</A></nobr>
350  </TD>
351  <TD VALIGN="TOP">Default <A HREF="../../api/org/apache/hadoop/mapred/MapRunner/MapRunnable.html" target="_top">MapRunnable</A> implementation.</TD>
352</TR>
353<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
354  <TD VALIGN="TOP" WIDTH="25%">
355  <A NAME="Mapper"></A>
356  <nobr><A HREF="org.apache.hadoop.mapred.Mapper.html"><I>Mapper</I></A></nobr>
357  </TD>
358  <TD VALIGN="TOP">Maps input key/value pairs to a set of intermediate key/value pairs.</TD>
359</TR>
360<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
361  <TD VALIGN="TOP" WIDTH="25%">
362  <A NAME="MultiFileInputFormat"></A>
363  <nobr><A HREF="org.apache.hadoop.mapred.MultiFileInputFormat.html">MultiFileInputFormat</A></nobr>
364  </TD>
365  <TD VALIGN="TOP">An abstract <A HREF="../../api/org/apache/hadoop/mapred/MultiFileInputFormat/InputFormat.html" target="_top">InputFormat</A> that returns <A HREF="../../api/org.apache.hadoop.mapred.MultiFileInputFormat.MultiFileSplit}'s.html" target="_top">i</A> <A HREF="../../api/org.apache.hadoop.mapred.MultiFileInputFormat.#getSplits(JobConf.html" target="_top">int)</A> method.</TD>
366</TR>
367<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
368  <TD VALIGN="TOP" WIDTH="25%">
369  <A NAME="MultiFileSplit"></A>
370  <nobr><A HREF="org.apache.hadoop.mapred.MultiFileSplit.html">MultiFileSplit</A></nobr>
371  </TD>
372  <TD VALIGN="TOP">A sub-collection of input files.</TD>
373</TR>
374<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
375  <TD VALIGN="TOP" WIDTH="25%">
376  <A NAME="OutputCollector"></A>
377  <nobr><A HREF="org.apache.hadoop.mapred.OutputCollector.html"><I>OutputCollector</I></A></nobr>
378  </TD>
379  <TD VALIGN="TOP">Collects the <code>&lt;key value&gt;</code> pairs output by <A HREF="../../api/org.apache.hadoop.mapred.OutputCollector.Mapper}s.html" target="_top">an</A> <A HREF="../../api/org.apache.hadoop.mapred.OutputCollector.Reducer}s/.html" target="_top"></TD>
380</TR>
381<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
382  <TD VALIGN="TOP" WIDTH="25%">
383  <A NAME="OutputCommitter"></A>
384  <nobr><A HREF="org.apache.hadoop.mapred.OutputCommitter.html">OutputCommitter</A></nobr>
385  </TD>
386  <TD VALIGN="TOP"><code>OutputCommitter</code> describes the commit of task output for a Map-Reduce job.</TD>
387</TR>
388<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
389  <TD VALIGN="TOP" WIDTH="25%">
390  <A NAME="OutputFormat"></A>
391  <nobr><A HREF="org.apache.hadoop.mapred.OutputFormat.html"><I>OutputFormat</I></A></nobr>
392  </TD>
393  <TD VALIGN="TOP"><code>OutputFormat</code> describes the output-specification for a Map-Reduce job.</TD>
394</TR>
395<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
396  <TD VALIGN="TOP" WIDTH="25%">
397  <A NAME="Partitioner"></A>
398  <nobr><A HREF="org.apache.hadoop.mapred.Partitioner.html"><I>Partitioner</I></A></nobr>
399  </TD>
400  <TD VALIGN="TOP">Partitions the key space.</TD>
401</TR>
402<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
403  <TD VALIGN="TOP" WIDTH="25%">
404  <A NAME="RecordReader"></A>
405  <nobr><A HREF="org.apache.hadoop.mapred.RecordReader.html"><I>RecordReader</I></A></nobr>
406  </TD>
407  <TD VALIGN="TOP"><code>RecordReader</code> reads &lt;key value&gt; pairs from an <A HREF="../../api/org/apache/hadoop/mapred/RecordReader/InputSplit.html" target="_top">InputSplit</A> </TD>
408</TR>
409<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
410  <TD VALIGN="TOP" WIDTH="25%">
411  <A NAME="RecordWriter"></A>
412  <nobr><A HREF="org.apache.hadoop.mapred.RecordWriter.html"><I>RecordWriter</I></A></nobr>
413  </TD>
414  <TD VALIGN="TOP"><code>RecordWriter</code> writes the output &lt;key value&gt; pairs to an output file.</TD>
415</TR>
416<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
417  <TD VALIGN="TOP" WIDTH="25%">
418  <A NAME="Reducer"></A>
419  <nobr><A HREF="org.apache.hadoop.mapred.Reducer.html"><I>Reducer</I></A></nobr>
420  </TD>
421  <TD VALIGN="TOP">Reduces a set of intermediate values which share a key to a smaller set of values.</TD>
422</TR>
423<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
424  <TD VALIGN="TOP" WIDTH="25%">
425  <A NAME="Reporter"></A>
426  <nobr><A HREF="org.apache.hadoop.mapred.Reporter.html"><I>Reporter</I></A></nobr>
427  </TD>
428  <TD VALIGN="TOP">A facility for Map-Reduce applications to report progress and update counters status information etc.</TD>
429</TR>
430<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
431  <TD VALIGN="TOP" WIDTH="25%">
432  <A NAME="RunningJob"></A>
433  <nobr><A HREF="org.apache.hadoop.mapred.RunningJob.html"><I>RunningJob</I></A></nobr>
434  </TD>
435  <TD VALIGN="TOP"><code>RunningJob</code> is the user-interface to query for details on a running Map-Reduce job.</TD>
436</TR>
437<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
438  <TD VALIGN="TOP" WIDTH="25%">
439  <A NAME="SequenceFileAsBinaryInputFormat"></A>
440  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileAsBinaryInputFormat.html">SequenceFileAsBinaryInputFormat</A></nobr>
441  </TD>
442  <TD VALIGN="TOP">InputFormat reading keys values from SequenceFiles in binary (raw) format.</TD>
443</TR>
444<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
445  <TD VALIGN="TOP" WIDTH="25%">
446  <A NAME="SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader"></A>
447  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader.html">SequenceFileAsBinaryInputFormat.<br>SequenceFileAsBinaryRecordReader</A></nobr>
448  </TD>
449  <TD VALIGN="TOP">Read records from a SequenceFile as binary (raw) bytes.</TD>
450</TR>
451<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
452  <TD VALIGN="TOP" WIDTH="25%">
453  <A NAME="SequenceFileAsBinaryOutputFormat"></A>
454  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileAsBinaryOutputFormat.html">SequenceFileAsBinaryOutputFormat</A></nobr>
455  </TD>
456  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/SequenceFileAsBinaryOutputFormat/OutputFormat.html" target="_top">OutputFormat</A> that writes keys values to <A HREF="../../api/org.apache.hadoop.mapred.SequenceFileAsBinaryOutputFormat.SequenceFile}s.html" target="_top">i</A> binary(raw) format</TD>
457</TR>
458<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
459  <TD VALIGN="TOP" WIDTH="25%">
460  <A NAME="SequenceFileAsTextInputFormat"></A>
461  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileAsTextInputFormat.html">SequenceFileAsTextInputFormat</A></nobr>
462  </TD>
463  <TD VALIGN="TOP">This class is similar to SequenceFileInputFormat except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method.</TD>
464</TR>
465<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
466  <TD VALIGN="TOP" WIDTH="25%">
467  <A NAME="SequenceFileAsTextRecordReader"></A>
468  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileAsTextRecordReader.html">SequenceFileAsTextRecordReader</A></nobr>
469  </TD>
470  <TD VALIGN="TOP">This class converts the input keys and values to their String forms by calling toString() method.</TD>
471</TR>
472<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
473  <TD VALIGN="TOP" WIDTH="25%">
474  <A NAME="SequenceFileInputFilter"></A>
475  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileInputFilter.html">SequenceFileInputFilter</A></nobr>
476  </TD>
477  <TD VALIGN="TOP">A class that allows a map/red job to work on a sample of sequence files.</TD>
478</TR>
479<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
480  <TD VALIGN="TOP" WIDTH="25%">
481  <A NAME="SequenceFileInputFormat"></A>
482  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileInputFormat.html">SequenceFileInputFormat</A></nobr>
483  </TD>
484  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/SequenceFileInputFormat/InputFormat.html" target="_top">InputFormat</A> for <A HREF="../../api/org.apache.hadoop.mapred.SequenceFileInputFormat.SequenceFile}s/.html" target="_top"></TD>
485</TR>
486<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
487  <TD VALIGN="TOP" WIDTH="25%">
488  <A NAME="SequenceFileOutputFormat"></A>
489  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileOutputFormat.html">SequenceFileOutputFormat</A></nobr>
490  </TD>
491  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/SequenceFileOutputFormat/OutputFormat.html" target="_top">OutputFormat</A> that writes <A HREF="../../api/org.apache.hadoop.mapred.SequenceFileOutputFormat.SequenceFile}s/.html" target="_top"></TD>
492</TR>
493<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
494  <TD VALIGN="TOP" WIDTH="25%">
495  <A NAME="SequenceFileRecordReader"></A>
496  <nobr><A HREF="org.apache.hadoop.mapred.SequenceFileRecordReader.html">SequenceFileRecordReader</A></nobr>
497  </TD>
498  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/SequenceFileRecordReader/RecordReader.html" target="_top">RecordReader</A> for <A HREF="../../api/org.apache.hadoop.mapred.SequenceFileRecordReader.SequenceFile}s/.html" target="_top">SequenceFile}s</A></TD>
499</TR>
500<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
501  <TD VALIGN="TOP" WIDTH="25%">
502  <A NAME="TaskAttemptContext"></A>
503  <nobr><A HREF="org.apache.hadoop.mapred.TaskAttemptContext.html">TaskAttemptContext</A></nobr>
504  </TD>
505  <TD VALIGN="TOP">@deprecated Use <A HREF="../../api/org/apache/hadoop/mapreduce/TaskAttemptContext.html" target="_top">org.apache.hadoop.mapreduce.TaskAttemptContext</A> instead.</TD>
506</TR>
507<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
508  <TD VALIGN="TOP" WIDTH="25%">
509  <A NAME="TaskAttemptID"></A>
510  <nobr><A HREF="org.apache.hadoop.mapred.TaskAttemptID.html">TaskAttemptID</A></nobr>
511  </TD>
512  <TD VALIGN="TOP">TaskAttemptID represents the immutable and unique identifier for a task attempt.</TD>
513</TR>
514<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
515  <TD VALIGN="TOP" WIDTH="25%">
516  <A NAME="TaskCompletionEvent.Status"></A>
517  <nobr><A HREF="org.apache.hadoop.mapred.TaskCompletionEvent.Status.html">TaskCompletionEvent.Status</A></nobr>
518  </TD>
519  <TD>&nbsp;</TD>
520</TR>
521<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
522  <TD VALIGN="TOP" WIDTH="25%">
523  <A NAME="TaskID"></A>
524  <nobr><A HREF="org.apache.hadoop.mapred.TaskID.html">TaskID</A></nobr>
525  </TD>
526  <TD VALIGN="TOP">TaskID represents the immutable and unique identifier for a Map or Reduce Task.</TD>
527</TR>
528<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
529  <TD VALIGN="TOP" WIDTH="25%">
530  <A NAME="TaskLog"></A>
531  <nobr><A HREF="org.apache.hadoop.mapred.TaskLog.html">TaskLog</A></nobr>
532  </TD>
533  <TD VALIGN="TOP">A simple logger to handle the task-specific user logs.</TD>
534</TR>
535<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
536  <TD VALIGN="TOP" WIDTH="25%">
537  <A NAME="TaskLog.LogName"></A>
538  <nobr><A HREF="org.apache.hadoop.mapred.TaskLog.LogName.html">TaskLog.LogName</A></nobr>
539  </TD>
540  <TD VALIGN="TOP">The filter for userlogs.</TD>
541</TR>
542<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
543  <TD VALIGN="TOP" WIDTH="25%">
544  <A NAME="TaskReport"></A>
545  <nobr><A HREF="org.apache.hadoop.mapred.TaskReport.html">TaskReport</A></nobr>
546  </TD>
547  <TD VALIGN="TOP">A report on the state of a task.</TD>
548</TR>
549<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
550  <TD VALIGN="TOP" WIDTH="25%">
551  <A NAME="TaskTracker"></A>
552  <nobr><A HREF="org.apache.hadoop.mapred.TaskTracker.html">TaskTracker</A></nobr>
553  </TD>
554  <TD VALIGN="TOP">TaskTracker is a process that starts and tracks MR Tasks in a networked environment.</TD>
555</TR>
556<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
557  <TD VALIGN="TOP" WIDTH="25%">
558  <A NAME="TextInputFormat"></A>
559  <nobr><A HREF="org.apache.hadoop.mapred.TextInputFormat.html">TextInputFormat</A></nobr>
560  </TD>
561  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/TextInputFormat/InputFormat.html" target="_top">InputFormat</A> for plain text files.</TD>
562</TR>
563<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
564  <TD VALIGN="TOP" WIDTH="25%">
565  <A NAME="TextOutputFormat"></A>
566  <nobr><A HREF="org.apache.hadoop.mapred.TextOutputFormat.html">TextOutputFormat</A></nobr>
567  </TD>
568  <TD VALIGN="TOP">An <A HREF="../../api/org/apache/hadoop/mapred/TextOutputFormat/OutputFormat.html" target="_top">OutputFormat</A> that writes plain text files.</TD>
569</TR>
570<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
571  <TD VALIGN="TOP" WIDTH="25%">
572  <A NAME="TextOutputFormat.LineRecordWriter"></A>
573  <nobr><A HREF="org.apache.hadoop.mapred.TextOutputFormat.LineRecordWriter.html">TextOutputFormat.LineRecordWriter</A></nobr>
574  </TD>
575  <TD>&nbsp;</TD>
576</TR>
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