com.pivotal.gemfirexd.hadoop.mapred

Class MapRedRowRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<Key,Row>

com.pivotal.gemfirexd.hadoop.mapreduce.RowRecordReader

com.pivotal.gemfirexd.hadoop.mapred.MapRedRowRecordReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.mapred.RecordReader<Key,Row>

public class MapRedRowRecordReader
extends RowRecordReader
implements org.apache.hadoop.mapred.RecordReader<Key,Row>

Wrapper around RowRecordReader to make the reader compliant with mapred.* api, a.k.a. old map reduce api

Field Summary

Fields inherited from class com.pivotal.gemfirexd.hadoop.mapreduce.RowRecordReader

es, logger, rs, splitIterator

Constructor Summary

Constructors

Constructor and Description
MapRedRowRecordReader()

Method Summary

Modifier and Type	Method and Description
void	close()
Key	createKey()
Row	createValue()
protected long[]	getLengths(org.apache.hadoop.mapred.InputSplit split)
long	getPos()
float	getProgress()
protected org.apache.hadoop.fs.Path[]	getSplitPaths(org.apache.hadoop.mapred.InputSplit split)
protected long[]	getStartOffsets(org.apache.hadoop.mapred.InputSplit split)
boolean	next(Key key, Row value)

Methods inherited from class com.pivotal.gemfirexd.hadoop.mapreduce.RowRecordReader

getCurrentKey, getCurrentValue, getResultSetProgress, getRowKeyBytes, initialize, instantiateGfxdLoner, nextKeyValue, nextRow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MapRedRowRecordReader

public MapRedRowRecordReader()

Method Detail

getSplitPaths

protected org.apache.hadoop.fs.Path[] getSplitPaths(org.apache.hadoop.mapred.InputSplit split)

getStartOffsets

protected long[] getStartOffsets(org.apache.hadoop.mapred.InputSplit split)

getLengths

protected long[] getLengths(org.apache.hadoop.mapred.InputSplit split)

createKey

public final Key createKey()

Specified by:

createKey in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

createValue

public final Row createValue()

Specified by:

createValue in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

next

public final boolean next(Key key,
                          Row value)
                   throws java.io.IOException

Specified by:

next in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

Throws:

java.io.IOException

getPos

public long getPos()
            throws java.io.IOException

Specified by:

getPos in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

Overrides:

close in class RowRecordReader

Throws:

java.io.IOException

getProgress

public float getProgress()
                  throws java.io.IOException

Specified by:

getProgress in interface org.apache.hadoop.mapred.RecordReader<Key,Row>

Overrides:

getProgress in class RowRecordReader

Throws:

java.io.IOException