com.pivotal.gemfirexd.hadoop.mapreduce

Class RowRecordReader

java.lang.Object

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

com.pivotal.gemfirexd.hadoop.mapreduce.RowRecordReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

MapRedRowRecordReader

public class RowRecordReader
extends org.apache.hadoop.mapreduce.RecordReader<Key,Row>

This class provides hoplog data reader. This class uses a stand-alone gemfirexd instance to transform record byte[] in hoplogs into ResultSet objects. The user is not expected to advance the result set's cursor.

Field Summary

Fields

Modifier and Type	Field and Description
protected com.pivotal.gemfirexd.internal.impl.jdbc.EmbedStatement	es
protected org.slf4j.Logger	logger
protected com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet	rs
protected com.gemstone.gemfire.cache.hdfs.internal.hoplog.mapreduce.HDFSSplitIterator	splitIterator

Constructor Summary

Constructors

Constructor and Description
RowRecordReader()

Method Summary

Modifier and Type	Method and Description
void	close()
Key	getCurrentKey()
Row	getCurrentValue()
float	getProgress()
protected float	getResultSetProgress()
protected byte[]	getRowKeyBytes()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)
protected void	instantiateGfxdLoner(org.apache.hadoop.conf.Configuration conf)
boolean	nextKeyValue()
protected boolean	nextRow()

Methods inherited from class java.lang.Object

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

Field Detail

splitIterator

protected com.gemstone.gemfire.cache.hdfs.internal.hoplog.mapreduce.HDFSSplitIterator splitIterator

es

protected com.pivotal.gemfirexd.internal.impl.jdbc.EmbedStatement es

rs

protected com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet rs

logger

protected final org.slf4j.Logger logger

Constructor Detail

RowRecordReader

public RowRecordReader()

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.mapreduce.TaskAttemptContext context)
                throws java.io.IOException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<Key,Row>

Throws:

java.io.IOException

instantiateGfxdLoner

protected void instantiateGfxdLoner(org.apache.hadoop.conf.Configuration conf)
                             throws java.io.IOException

Throws:

java.io.IOException

nextKeyValue

public final boolean nextKeyValue()
                           throws java.io.IOException,
                                  java.lang.InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<Key,Row>

Throws:

java.io.IOException

java.lang.InterruptedException

nextRow

protected final boolean nextRow()
                         throws java.io.IOException

Throws:

java.io.IOException

getCurrentKey

public final Key getCurrentKey()
                        throws java.io.IOException,
                               java.lang.InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<Key,Row>

Throws:

java.io.IOException

java.lang.InterruptedException

getRowKeyBytes

protected final byte[] getRowKeyBytes()
                               throws java.io.IOException

Throws:

java.io.IOException

getCurrentValue

public final Row getCurrentValue()
                          throws java.io.IOException,
                                 java.lang.InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<Key,Row>

Throws:

java.io.IOException

java.lang.InterruptedException

getProgress

public float getProgress()
                  throws java.io.IOException,
                         java.lang.InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<Key,Row>

Throws:

java.io.IOException

java.lang.InterruptedException

getResultSetProgress

protected float getResultSetProgress()

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

Throws:

java.io.IOException