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7Uses of Class org.apache.hadoop.mapred.MapReduceBase (Hadoop 0.20.1 API)
8</TITLE>
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83<H2>
84<B>Uses of Class<br>org.apache.hadoop.mapred.MapReduceBase</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/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A></FONT></TH>
91</TR>
92<TR BGCOLOR="white" CLASS="TableRowColor">
93<TD><A HREF="#org.apache.hadoop.contrib.index.mapred"><B>org.apache.hadoop.contrib.index.mapred</B></A></TD>
94<TD>&nbsp;&nbsp;</TD>
95</TR>
96<TR BGCOLOR="white" CLASS="TableRowColor">
97<TD><A HREF="#org.apache.hadoop.examples"><B>org.apache.hadoop.examples</B></A></TD>
98<TD>Hadoop example code.&nbsp;</TD>
99</TR>
100<TR BGCOLOR="white" CLASS="TableRowColor">
101<TD><A HREF="#org.apache.hadoop.examples.dancing"><B>org.apache.hadoop.examples.dancing</B></A></TD>
102<TD>This package is a distributed implementation of Knuth's <a
103href="http://en.wikipedia.org/wiki/Dancing_Links">dancing links</a>
104algorithm that can run under Hadoop.&nbsp;</TD>
105</TR>
106<TR BGCOLOR="white" CLASS="TableRowColor">
107<TD><A HREF="#org.apache.hadoop.examples.terasort"><B>org.apache.hadoop.examples.terasort</B></A></TD>
108<TD>This package consists of 3 map/reduce applications for Hadoop to
109compete in the annual <a
110href="http://www.hpl.hp.com/hosted/sortbenchmark" target="_top">terabyte sort</a>
111competition.&nbsp;</TD>
112</TR>
113<TR BGCOLOR="white" CLASS="TableRowColor">
114<TD><A HREF="#org.apache.hadoop.mapred.lib"><B>org.apache.hadoop.mapred.lib</B></A></TD>
115<TD>Library of generally useful mappers, reducers, and partitioners.&nbsp;</TD>
116</TR>
117</TABLE>
118&nbsp;
119<P>
120<A NAME="org.apache.hadoop.contrib.index.mapred"><!-- --></A>
121<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
122<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
123<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
124Uses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/contrib/index/mapred/package-summary.html">org.apache.hadoop.contrib.index.mapred</A></FONT></TH>
125</TR>
126</TABLE>
127&nbsp;
128<P>
129
130<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
131<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
132<TH ALIGN="left" COLSPAN="2">Subclasses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/contrib/index/mapred/package-summary.html">org.apache.hadoop.contrib.index.mapred</A></FONT></TH>
133</TR>
134<TR BGCOLOR="white" CLASS="TableRowColor">
135<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
136<CODE>&nbsp;class</CODE></FONT></TD>
137<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/contrib/index/mapred/IndexUpdateCombiner.html" title="class in org.apache.hadoop.contrib.index.mapred">IndexUpdateCombiner</A></B></CODE>
138
139<BR>
140&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This combiner combines multiple intermediate forms into one intermediate
141 form.</TD>
142</TR>
143<TR BGCOLOR="white" CLASS="TableRowColor">
144<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
145<CODE>&nbsp;class</CODE></FONT></TD>
146<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/contrib/index/mapred/IndexUpdateMapper.html" title="class in org.apache.hadoop.contrib.index.mapred">IndexUpdateMapper&lt;K extends WritableComparable,V extends Writable&gt;</A></B></CODE>
147
148<BR>
149&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This class applies local analysis on a key-value pair and then convert the
150 result docid-operation pair to a shard-and-intermediate form pair.</TD>
151</TR>
152<TR BGCOLOR="white" CLASS="TableRowColor">
153<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
154<CODE>&nbsp;class</CODE></FONT></TD>
155<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/contrib/index/mapred/IndexUpdateReducer.html" title="class in org.apache.hadoop.contrib.index.mapred">IndexUpdateReducer</A></B></CODE>
156
157<BR>
158&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This reducer applies to a shard the changes for it.</TD>
159</TR>
160</TABLE>
161&nbsp;
162<P>
163<A NAME="org.apache.hadoop.examples"><!-- --></A>
164<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
165<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
166<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
167Uses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/package-summary.html">org.apache.hadoop.examples</A></FONT></TH>
168</TR>
169</TABLE>
170&nbsp;
171<P>
172
173<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
174<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
175<TH ALIGN="left" COLSPAN="2">Subclasses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/package-summary.html">org.apache.hadoop.examples</A></FONT></TH>
176</TR>
177<TR BGCOLOR="white" CLASS="TableRowColor">
178<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
179<CODE>static&nbsp;class</CODE></FONT></TD>
180<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/MultiFileWordCount.MapClass.html" title="class in org.apache.hadoop.examples">MultiFileWordCount.MapClass</A></B></CODE>
181
182<BR>
183&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Mapper is similar to the one in <A HREF="../../../../../org/apache/hadoop/examples/MultiFileWordCount.MapClass.html" title="class in org.apache.hadoop.examples"><CODE>MultiFileWordCount.MapClass</CODE></A>.</TD>
184</TR>
185<TR BGCOLOR="white" CLASS="TableRowColor">
186<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
187<CODE>static&nbsp;class</CODE></FONT></TD>
188<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/PiEstimator.PiMapper.html" title="class in org.apache.hadoop.examples">PiEstimator.PiMapper</A></B></CODE>
189
190<BR>
191&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mapper class for Pi estimation.</TD>
192</TR>
193<TR BGCOLOR="white" CLASS="TableRowColor">
194<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
195<CODE>static&nbsp;class</CODE></FONT></TD>
196<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/PiEstimator.PiReducer.html" title="class in org.apache.hadoop.examples">PiEstimator.PiReducer</A></B></CODE>
197
198<BR>
199&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reducer class for Pi estimation.</TD>
200</TR>
201</TABLE>
202&nbsp;
203<P>
204<A NAME="org.apache.hadoop.examples.dancing"><!-- --></A>
205<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
206<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
207<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
208Uses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/dancing/package-summary.html">org.apache.hadoop.examples.dancing</A></FONT></TH>
209</TR>
210</TABLE>
211&nbsp;
212<P>
213
214<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
215<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
216<TH ALIGN="left" COLSPAN="2">Subclasses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/dancing/package-summary.html">org.apache.hadoop.examples.dancing</A></FONT></TH>
217</TR>
218<TR BGCOLOR="white" CLASS="TableRowColor">
219<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
220<CODE>static&nbsp;class</CODE></FONT></TD>
221<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/dancing/DistributedPentomino.PentMap.html" title="class in org.apache.hadoop.examples.dancing">DistributedPentomino.PentMap</A></B></CODE>
222
223<BR>
224&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each map takes a line, which represents a prefix move and finds all of
225 the solutions that start with that prefix.</TD>
226</TR>
227</TABLE>
228&nbsp;
229<P>
230<A NAME="org.apache.hadoop.examples.terasort"><!-- --></A>
231<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
232<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
233<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
234Uses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/terasort/package-summary.html">org.apache.hadoop.examples.terasort</A></FONT></TH>
235</TR>
236</TABLE>
237&nbsp;
238<P>
239
240<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
241<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
242<TH ALIGN="left" COLSPAN="2">Subclasses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/examples/terasort/package-summary.html">org.apache.hadoop.examples.terasort</A></FONT></TH>
243</TR>
244<TR BGCOLOR="white" CLASS="TableRowColor">
245<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
246<CODE>static&nbsp;class</CODE></FONT></TD>
247<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/terasort/TeraGen.SortGenMapper.html" title="class in org.apache.hadoop.examples.terasort">TeraGen.SortGenMapper</A></B></CODE>
248
249<BR>
250&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Mapper class that given a row number, will generate the appropriate
251 output line.</TD>
252</TR>
253</TABLE>
254&nbsp;
255<P>
256<A NAME="org.apache.hadoop.mapred.lib"><!-- --></A>
257<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
258<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
259<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
260Uses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</A></FONT></TH>
261</TR>
262</TABLE>
263&nbsp;
264<P>
265
266<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
267<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
268<TH ALIGN="left" COLSPAN="2">Subclasses of <A HREF="../../../../../org/apache/hadoop/mapred/MapReduceBase.html" title="class in org.apache.hadoop.mapred">MapReduceBase</A> in <A HREF="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</A></FONT></TH>
269</TR>
270<TR BGCOLOR="white" CLASS="TableRowColor">
271<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
272<CODE>&nbsp;class</CODE></FONT></TD>
273<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/IdentityMapper.html" title="class in org.apache.hadoop.mapred.lib">IdentityMapper&lt;K,V&gt;</A></B></CODE>
274
275<BR>
276&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Use <A HREF="../../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A> instead.</I></TD>
277</TR>
278<TR BGCOLOR="white" CLASS="TableRowColor">
279<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
280<CODE>&nbsp;class</CODE></FONT></TD>
281<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/IdentityReducer.html" title="class in org.apache.hadoop.mapred.lib">IdentityReducer&lt;K,V&gt;</A></B></CODE>
282
283<BR>
284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Use <A HREF="../../../../../org/apache/hadoop/mapreduce/Reducer.html" title="class in org.apache.hadoop.mapreduce"><CODE>Reducer</CODE></A> instead.</I></TD>
285</TR>
286<TR BGCOLOR="white" CLASS="TableRowColor">
287<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
288<CODE>&nbsp;class</CODE></FONT></TD>
289<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/InverseMapper.html" title="class in org.apache.hadoop.mapred.lib">InverseMapper&lt;K,V&gt;</A></B></CODE>
290
291<BR>
292&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Use <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/InverseMapper.html" title="class in org.apache.hadoop.mapreduce.lib.map"><CODE>InverseMapper</CODE></A> 
293   instead.</I></TD>
294</TR>
295<TR BGCOLOR="white" CLASS="TableRowColor">
296<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
297<CODE>&nbsp;class</CODE></FONT></TD>
298<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/LongSumReducer.html" title="class in org.apache.hadoop.mapred.lib">LongSumReducer&lt;K&gt;</A></B></CODE>
299
300<BR>
301&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Use <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/reduce/LongSumReducer.html" title="class in org.apache.hadoop.mapreduce.lib.reduce"><CODE>LongSumReducer</CODE></A>
302    instead.</I></TD>
303</TR>
304<TR BGCOLOR="white" CLASS="TableRowColor">
305<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
306<CODE>&nbsp;class</CODE></FONT></TD>
307<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/RegexMapper.html" title="class in org.apache.hadoop.mapred.lib">RegexMapper&lt;K&gt;</A></B></CODE>
308
309<BR>
310&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A <A HREF="../../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred"><CODE>Mapper</CODE></A> that extracts text matching a regular expression.</TD>
311</TR>
312<TR BGCOLOR="white" CLASS="TableRowColor">
313<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
314<CODE>&nbsp;class</CODE></FONT></TD>
315<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/TokenCountMapper.html" title="class in org.apache.hadoop.mapred.lib">TokenCountMapper&lt;K&gt;</A></B></CODE>
316
317<BR>
318&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Use
319    <A HREF="../../../../../org/apache/hadoop/mapreduce/lib/map/TokenCounterMapper.html" title="class in org.apache.hadoop.mapreduce.lib.map"><CODE>TokenCounterMapper</CODE></A> instead.</I></TD>
320</TR>
321</TABLE>
322&nbsp;
323<P>
324<HR>
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