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7MapRunnable (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapred</FONT>
92<BR>
93Interface MapRunnable&lt;K1,V1,K2,V2&gt;</H2>
94<DL>
95<DT><B>All Superinterfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/mapred/JobConfigurable.html" title="interface in org.apache.hadoop.mapred">JobConfigurable</A></DD>
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99</DL>
100<HR>
101<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>
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103<DL>
104<DT><PRE><FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
105</FONT>public interface <B>MapRunnable&lt;K1,V1,K2,V2&gt;</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapred/JobConfigurable.html" title="interface in org.apache.hadoop.mapred">JobConfigurable</A></DL>
106</PRE>
107
108<P>
109Expert: Generic interface for <A HREF="../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred"><CODE>Mapper</CODE></A>s.
110 
111 <p>Custom implementations of <code>MapRunnable</code> can exert greater
112 control on map processing e.g. multi-threaded, asynchronous mappers etc.</p>
113<P>
114
115<P>
116<DL>
117<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred"><CODE>Mapper</CODE></A></DL>
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132<CODE>&nbsp;void</CODE></FONT></TD>
133<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html#run(org.apache.hadoop.mapred.RecordReader, org.apache.hadoop.mapred.OutputCollector, org.apache.hadoop.mapred.Reporter)">run</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A>&lt;<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K1</A>,<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V1</A>&gt;&nbsp;input,
134    <A HREF="../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</A>&lt;<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K2</A>,<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V2</A>&gt;&nbsp;output,
135    <A HREF="../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A>&nbsp;reporter)</CODE>
136
137<BR>
138&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Start mapping input <tt>&lt;key, value&gt;</tt> pairs.</TD>
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144<TH ALIGN="left"><B>Methods inherited from interface org.apache.hadoop.mapred.<A HREF="../../../../org/apache/hadoop/mapred/JobConfigurable.html" title="interface in org.apache.hadoop.mapred">JobConfigurable</A></B></TH>
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147<TD><CODE><A HREF="../../../../org/apache/hadoop/mapred/JobConfigurable.html#configure(org.apache.hadoop.mapred.JobConf)">configure</A></CODE></TD>
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163<A NAME="run(org.apache.hadoop.mapred.RecordReader, org.apache.hadoop.mapred.OutputCollector, org.apache.hadoop.mapred.Reporter)"><!-- --></A><H3>
164run</H3>
165<PRE>
166void <B>run</B>(<A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A>&lt;<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K1</A>,<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V1</A>&gt;&nbsp;input,
167         <A HREF="../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</A>&lt;<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K2</A>,<A HREF="../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V2</A>&gt;&nbsp;output,
168         <A HREF="../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A>&nbsp;reporter)
169         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>
170<DL>
171<DD><B>Deprecated.</B>&nbsp;<DD>Start mapping input <tt>&lt;key, value&gt;</tt> pairs.
172 
173 <p>Mapping of input records to output records is complete when this method
174 returns.</p>
175<P>
176<DD><DL>
177</DL>
178</DD>
179<DD><DL>
180<DT><B>Parameters:</B><DD><CODE>input</CODE> - the <A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><CODE>RecordReader</CODE></A> to read the input records.<DD><CODE>output</CODE> - the <A HREF="../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred"><CODE>OutputCollector</CODE></A> to collect the outputrecords.<DD><CODE>reporter</CODE> - <A HREF="../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred"><CODE>Reporter</CODE></A> to report progress, status-updates etc.
181<DT><B>Throws:</B>
182<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>
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