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6<TITLE>
7Uses of Class org.apache.hadoop.mapreduce.Job (Hadoop 0.20.1 API)
8</TITLE>
9
10<META NAME="date" CONTENT="2009-09-01">
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18        parent.document.title="Uses of Class org.apache.hadoop.mapreduce.Job (Hadoop 0.20.1 API)";
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39  <TR ALIGN="center" VALIGN="top">
40  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
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42  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce"><FONT CLASS="NavBarFont1"><B>Class</B></FONT></A>&nbsp;</TD>
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80
81<HR>
82<CENTER>
83<H2>
84<B>Uses of Class<br>org.apache.hadoop.mapreduce.Job</B></H2>
85</CENTER>
86
87<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
88<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
89<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
90Packages that use <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A></FONT></TH>
91</TR>
92<TR BGCOLOR="white" CLASS="TableRowColor">
93<TD><A HREF="#org.apache.hadoop.mapreduce.lib.input"><B>org.apache.hadoop.mapreduce.lib.input</B></A></TD>
94<TD>&nbsp;&nbsp;</TD>
95</TR>
96<TR BGCOLOR="white" CLASS="TableRowColor">
97<TD><A HREF="#org.apache.hadoop.mapreduce.lib.map"><B>org.apache.hadoop.mapreduce.lib.map</B></A></TD>
98<TD>&nbsp;&nbsp;</TD>
99</TR>
100<TR BGCOLOR="white" CLASS="TableRowColor">
101<TD><A HREF="#org.apache.hadoop.mapreduce.lib.output"><B>org.apache.hadoop.mapreduce.lib.output</B></A></TD>
102<TD>&nbsp;&nbsp;</TD>
103</TR>
104</TABLE>
105&nbsp;
106<P>
107<A NAME="org.apache.hadoop.mapreduce.lib.input"><!-- --></A>
108<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
109<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
110<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
111Uses of <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A> in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</A></FONT></TH>
112</TR>
113</TABLE>
114&nbsp;
115<P>
116
117<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
118<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
119<TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</A> with parameters of type <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A></FONT></TH>
120</TR>
121<TR BGCOLOR="white" CLASS="TableRowColor">
122<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
123<CODE>static&nbsp;void</CODE></FONT></TD>
124<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)">addInputPath</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
125             <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;path)</CODE>
126
127<BR>
128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A> to the list of inputs for the map-reduce job.</TD>
129</TR>
130<TR BGCOLOR="white" CLASS="TableRowColor">
131<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
132<CODE>static&nbsp;void</CODE></FONT></TD>
133<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">addInputPaths</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
134              <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;commaSeparatedPaths)</CODE>
135
136<BR>
137&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add the given comma separated paths to the list of inputs for
138  the map-reduce job.</TD>
139</TR>
140<TR BGCOLOR="white" CLASS="TableRowColor">
141<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
142<CODE>static&nbsp;void</CODE></FONT></TD>
143<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPathFilter(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setInputPathFilter</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
144                   <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/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</A>&gt;&nbsp;filter)</CODE>
145
146<BR>
147&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set a PathFilter to be applied to the input paths for the map-reduce job.</TD>
148</TR>
149<TR BGCOLOR="white" CLASS="TableRowColor">
150<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
151<CODE>static&nbsp;void</CODE></FONT></TD>
152<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path...)">setInputPaths</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
153              <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>...&nbsp;inputPaths)</CODE>
154
155<BR>
156&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the array of <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s as the list of inputs
157 for the map-reduce job.</TD>
158</TR>
159<TR BGCOLOR="white" CLASS="TableRowColor">
160<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
161<CODE>static&nbsp;void</CODE></FONT></TD>
162<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">setInputPaths</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
163              <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;commaSeparatedPaths)</CODE>
164
165<BR>
166&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the given comma separated paths as the list of inputs
167 for the map-reduce job.</TD>
168</TR>
169<TR BGCOLOR="white" CLASS="TableRowColor">
170<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
171<CODE>static&nbsp;void</CODE></FONT></TD>
172<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMaxInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMaxInputSplitSize</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
173                     long&nbsp;size)</CODE>
174
175<BR>
176&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the maximum split size</TD>
177</TR>
178<TR BGCOLOR="white" CLASS="TableRowColor">
179<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
180<CODE>static&nbsp;void</CODE></FONT></TD>
181<TD><CODE><B>FileInputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMinInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMinInputSplitSize</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
182                     long&nbsp;size)</CODE>
183
184<BR>
185&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the minimum input split size</TD>
186</TR>
187</TABLE>
188&nbsp;
189<P>
190<A NAME="org.apache.hadoop.mapreduce.lib.map"><!-- --></A>
191<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
192<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
193<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
194Uses of <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A> in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/package-summary.html">org.apache.hadoop.mapreduce.lib.map</A></FONT></TH>
195</TR>
196</TABLE>
197&nbsp;
198<P>
199
200<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
201<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
202<TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/package-summary.html">org.apache.hadoop.mapreduce.lib.map</A> with parameters of type <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A></FONT></TH>
203</TR>
204<TR BGCOLOR="white" CLASS="TableRowColor">
205<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
206<CODE>static
207<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
208<TR ALIGN="right" VALIGN="">
209<TD NOWRAP><FONT SIZE="-1">
210<CODE>&lt;K1,V1,K2,V2&gt; 
211<BR>
212void</CODE></FONT></TD>
213</TR>
214</TABLE>
215</CODE></FONT></TD>
216<TD><CODE><B>MultithreadedMapper.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.html#setMapperClass(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setMapperClass</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
217               <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;K1,V1,K2,V2&gt;&gt;&nbsp;cls)</CODE>
218
219<BR>
220&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the application's mapper class.</TD>
221</TR>
222<TR BGCOLOR="white" CLASS="TableRowColor">
223<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
224<CODE>static&nbsp;void</CODE></FONT></TD>
225<TD><CODE><B>MultithreadedMapper.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.html#setNumberOfThreads(org.apache.hadoop.mapreduce.Job, int)">setNumberOfThreads</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
226                   int&nbsp;threads)</CODE>
227
228<BR>
229&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the number of threads in the pool for running maps.</TD>
230</TR>
231</TABLE>
232&nbsp;
233<P>
234<A NAME="org.apache.hadoop.mapreduce.lib.output"><!-- --></A>
235<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
236<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
237<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
238Uses of <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A> in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/package-summary.html">org.apache.hadoop.mapreduce.lib.output</A></FONT></TH>
239</TR>
240</TABLE>
241&nbsp;
242<P>
243
244<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
245<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
246<TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/package-summary.html">org.apache.hadoop.mapreduce.lib.output</A> with parameters of type <A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A></FONT></TH>
247</TR>
248<TR BGCOLOR="white" CLASS="TableRowColor">
249<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
250<CODE>static&nbsp;void</CODE></FONT></TD>
251<TD><CODE><B>FileOutputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.html#setCompressOutput(org.apache.hadoop.mapreduce.Job, boolean)">setCompressOutput</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
252                  boolean&nbsp;compress)</CODE>
253
254<BR>
255&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set whether the output of the job is compressed.</TD>
256</TR>
257<TR BGCOLOR="white" CLASS="TableRowColor">
258<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
259<CODE>static&nbsp;void</CODE></FONT></TD>
260<TD><CODE><B>SequenceFileOutputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/SequenceFileOutputFormat.html#setOutputCompressionType(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.io.SequenceFile.CompressionType)">setOutputCompressionType</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
261                         <A HREF="../../../../../org/apache/hadoop/io/SequenceFile.CompressionType.html" title="enum in org.apache.hadoop.io">SequenceFile.CompressionType</A>&nbsp;style)</CODE>
262
263<BR>
264&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../../org/apache/hadoop/io/SequenceFile.CompressionType.html" title="enum in org.apache.hadoop.io"><CODE>SequenceFile.CompressionType</CODE></A> for the output <A HREF="../../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io"><CODE>SequenceFile</CODE></A>.</TD>
265</TR>
266<TR BGCOLOR="white" CLASS="TableRowColor">
267<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
268<CODE>static&nbsp;void</CODE></FONT></TD>
269<TD><CODE><B>FileOutputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.html#setOutputCompressorClass(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setOutputCompressorClass</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
270                         <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/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress">CompressionCodec</A>&gt;&nbsp;codecClass)</CODE>
271
272<BR>
273&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><CODE>CompressionCodec</CODE></A> to be used to compress job outputs.</TD>
274</TR>
275<TR BGCOLOR="white" CLASS="TableRowColor">
276<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
277<CODE>static&nbsp;void</CODE></FONT></TD>
278<TD><CODE><B>FileOutputFormat.</B><B><A HREF="../../../../../org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.html#setOutputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)">setOutputPath</A></B>(<A HREF="../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
279              <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outputDir)</CODE>
280
281<BR>
282&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A> of the output directory for the map-reduce job.</TD>
283</TR>
284</TABLE>
285&nbsp;
286<P>
287<HR>
288
289
290<!-- ======= START OF BOTTOM NAVBAR ====== -->
291<A NAME="navbar_bottom"><!-- --></A>
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296<A NAME="navbar_bottom_firstrow"><!-- --></A>
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