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KeyValueTextInputFormat (Apache Hadoop Main 0.23.1 API)
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org.apache.hadoop.mapreduce.lib.input</FONT>
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Class KeyValueTextInputFormat</H2>
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  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.InputFormat</A>&lt;K,V&gt;
      <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">org.apache.hadoop.mapreduce.lib.input.FileInputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;
          <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.lib.input.KeyValueTextInputFormat</B>
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<DT><PRE><FONT SIZE="-1">@InterfaceAudience.Public
@InterfaceStability.Stable
</FONT>public class <A HREF="../../../../../../src-html/org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#line.44"><B>KeyValueTextInputFormat</B></A><DT>extends <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</DL>
</PRE>

<P>
An <A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> for plain text files. Files are broken into lines.
 Either line feed or carriage-return are used to signal end of line. 
 Each line is divided into key and value parts by a separator byte. If no
 such a byte exists, the key will be the entire line and value will be empty.
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&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.lib.input.FileInputFormat"><!-- --></A>
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<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapreduce.lib.input.<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A></B></TH>
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<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#INPUT_DIR">INPUT_DIR</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#NUM_INPUT_FILES">NUM_INPUT_FILES</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#PATHFILTER_CLASS">PATHFILTER_CLASS</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#SPLIT_MAXSIZE">SPLIT_MAXSIZE</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#SPLIT_MINSIZE">SPLIT_MINSIZE</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#KeyValueTextInputFormat()">KeyValueTextInputFormat</A></B>()</CODE>

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">createRecordReader</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&nbsp;genericSplit,
                                     <A HREF="../../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;context)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a record reader for a given split.</TD>
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<CODE>protected &nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)">isSplitable</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="interface in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context,
                       <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;file)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Is the given filename splitable? Usually, true, but if the file is
 stream compressed, it will not be.</TD>
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&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.lib.input.FileInputFormat"><!-- --></A>
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<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.lib.input.<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)">addInputPath</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">addInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#computeSplitSize(long, long, long)">computeSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getBlockIndex(org.apache.hadoop.fs.BlockLocation[], long)">getBlockIndex</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getFormatMinSplitSize()">getFormatMinSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPathFilter(org.apache.hadoop.mapreduce.JobContext)">getInputPathFilter</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPaths(org.apache.hadoop.mapreduce.JobContext)">getInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMaxSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMaxSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMinSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMinSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)">getSplits</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#listStatus(org.apache.hadoop.mapreduce.JobContext)">listStatus</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#makeSplit(org.apache.hadoop.fs.Path, long, long, java.lang.String[])">makeSplit</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPathFilter(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setInputPathFilter</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path...)">setInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">setInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMaxInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMaxInputSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMinInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMinInputSplitSize</A></CODE></TD>
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<A NAME="KeyValueTextInputFormat()"><!-- --></A><H3>
KeyValueTextInputFormat</H3>
<PRE>
public <A HREF="../../../../../../src-html/org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#line.44"><B>KeyValueTextInputFormat</B></A>()</PRE>
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<A NAME="isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
isSplitable</H3>
<PRE>
protected boolean <A HREF="../../../../../../src-html/org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#line.47"><B>isSplitable</B></A>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="interface in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context,
                              <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;file)</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)">FileInputFormat</A></CODE></B></DD>
<DD>Is the given filename splitable? Usually, true, but if the file is
 stream compressed, it will not be.
 
 <code>FileInputFormat</code> implementations can override this and return
 <code>false</code> to ensure that individual input files are never split-up
 so that <A HREF="../../../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A>s process entire files.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)">isSplitable</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - the job context<DD><CODE>file</CODE> - the file name to check
<DT><B>Returns:</B><DD>is this file splitable?</DL>
</DD>
</DL>
<HR>

<A NAME="createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
createRecordReader</H3>
<PRE>
public <A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt; <A HREF="../../../../../../src-html/org/apache/hadoop/mapreduce/lib/input/KeyValueTextInputFormat.html#line.56"><B>createRecordReader</B></A>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&nbsp;genericSplit,
                                                  <A HREF="../../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;context)
                                           throws <A HREF="http://download.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">InputFormat</A></CODE></B></DD>
<DD>Create a record reader for a given split. The framework will call
 <A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#initialize(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)"><CODE>RecordReader.initialize(InputSplit, TaskAttemptContext)</CODE></A> before
 the split is used.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">createRecordReader</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>genericSplit</CODE> - the split to be read<DD><CODE>context</CODE> - the information about the task
<DT><B>Returns:</B><DD>a new record reader
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
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