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java.lang.Objectorg.apache.hadoop.mapred.FileInputFormat<K,V>
org.apache.hadoop.mapred.MultiFileInputFormat<MultiFileWordCount.WordOffset,Text>
org.apache.hadoop.examples.MultiFileWordCount.MyInputFormat
public static class MultiFileWordCount.MyInputFormat
To use MultiFileInputFormat
, one should extend it, to return a
(custom) RecordReader
. MultiFileInputFormat uses
MultiFileSplit
s.
Field Summary |
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Fields inherited from class org.apache.hadoop.mapred.FileInputFormat |
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LOG |
Constructor Summary | |
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MultiFileWordCount.MyInputFormat()
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Method Summary | |
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RecordReader<MultiFileWordCount.WordOffset,Text> |
getRecordReader(InputSplit split,
JobConf job,
Reporter reporter)
Get the RecordReader for the given InputSplit . |
Methods inherited from class org.apache.hadoop.mapred.MultiFileInputFormat |
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getSplits |
Methods inherited from class org.apache.hadoop.mapred.FileInputFormat |
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addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, isSplitable, listStatus, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public MultiFileWordCount.MyInputFormat()
Method Detail |
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public RecordReader<MultiFileWordCount.WordOffset,Text> getRecordReader(InputSplit split, JobConf job, Reporter reporter) throws java.io.IOException
InputFormat
RecordReader
for the given InputSplit
.
It is the responsibility of the RecordReader
to respect
record boundaries while processing the logical split to present a
record-oriented view to the individual task.
getRecordReader
in interface InputFormat<MultiFileWordCount.WordOffset,Text>
getRecordReader
in class MultiFileInputFormat<MultiFileWordCount.WordOffset,Text>
split
- the InputSplit
job
- the job that this split belongs to
RecordReader
java.io.IOException
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