org.apache.hadoop.mapreduce.lib.input
Class SequenceFileAsTextInputFormat

java.lang.Object
  extended by org.apache.hadoop.mapreduce.InputFormat<K,V>
      extended by org.apache.hadoop.mapreduce.lib.input.FileInputFormat<K,V>
          extended by org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat<Text,Text>
              extended by org.apache.hadoop.mapreduce.lib.input.SequenceFileAsTextInputFormat

@InterfaceAudience.Public
@InterfaceStability.Stable
public class SequenceFileAsTextInputFormat
extends SequenceFileInputFormat<Text,Text>

This class is similar to SequenceFileInputFormat, except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method.


Field Summary
 
Fields inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat
INPUT_DIR, INPUT_DIR_RECURSIVE, NUM_INPUT_FILES, PATHFILTER_CLASS, SPLIT_MAXSIZE, SPLIT_MINSIZE
 
Constructor Summary
SequenceFileAsTextInputFormat()
           
 
Method Summary
 RecordReader<Text,Text> createRecordReader(InputSplit split, TaskAttemptContext context)
          Create a record reader for a given split.
 
Methods inherited from class org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat
getFormatMinSplitSize, listStatus
 
Methods inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat
addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getInputDirRecursive, getInputPathFilter, getInputPaths, getMaxSplitSize, getMinSplitSize, getSplits, isSplitable, makeSplit, setInputDirRecursive, setInputPathFilter, setInputPaths, setInputPaths, setMaxInputSplitSize, setMinInputSplitSize
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SequenceFileAsTextInputFormat

public SequenceFileAsTextInputFormat()
Method Detail

createRecordReader

public RecordReader<Text,Text> createRecordReader(InputSplit split,
                                                  TaskAttemptContext context)
                                           throws IOException
Description copied from class: InputFormat
Create a record reader for a given split. The framework will call RecordReader.initialize(InputSplit, TaskAttemptContext) before the split is used.

Overrides:
createRecordReader in class SequenceFileInputFormat<Text,Text>
Parameters:
split - the split to be read
context - the information about the task
Returns:
a new record reader
Throws:
IOException


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