org.apache.accumulo.hadoopImpl.mapred

Class AccumuloRecordReader<K,V>

java.lang.Object

org.apache.accumulo.hadoopImpl.mapred.AccumuloRecordReader<K,V>

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.RecordReader<K,V>

public abstract class AccumuloRecordReader<K,V>
extends Object
implements org.apache.hadoop.mapred.RecordReader<K,V>

See Also:

AccumuloRecordReader

Field Summary

Fields

Modifier and Type	Field and Description
protected AccumuloClient	client
protected Key	currentKey
protected long	numKeysRead
protected ScannerBase	scannerBase
protected Iterator<Map.Entry<Key,Value>>	scannerIterator
protected RangeInputSplit	split

Constructor Summary

Constructors

Constructor and Description
AccumuloRecordReader(Class<?> callingClass)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getPos()
float	getProgress()
static org.apache.hadoop.mapred.InputSplit[]	getSplits(org.apache.hadoop.mapred.JobConf job, Class<?> callingClass) Gets the splits of the tables that have been set on the job by reading the metadata table for the specified ranges.
void	initialize(org.apache.hadoop.mapred.InputSplit inSplit, org.apache.hadoop.mapred.JobConf job) Initialize a scanner over the given input split using this task attempt configuration.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.RecordReader

createKey, createValue, next

Field Detail

numKeysRead

protected long numKeysRead

client

protected AccumuloClient client

scannerIterator

protected Iterator<Map.Entry<Key,Value>> scannerIterator

split

protected RangeInputSplit split

scannerBase

protected ScannerBase scannerBase

currentKey

protected Key currentKey

Constructor Detail

AccumuloRecordReader

public AccumuloRecordReader(Class<?> callingClass)

Method Detail

initialize

public void initialize(org.apache.hadoop.mapred.InputSplit inSplit,
                       org.apache.hadoop.mapred.JobConf job)
                throws IOException

Initialize a scanner over the given input split using this task attempt configuration.

Throws:

IOException

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.apache.hadoop.mapred.RecordReader<K,V>

getPos

public long getPos()

Specified by:

getPos in interface org.apache.hadoop.mapred.RecordReader<K,V>

getProgress

public float getProgress()

Specified by:

getProgress in interface org.apache.hadoop.mapred.RecordReader<K,V>

getSplits

public static org.apache.hadoop.mapred.InputSplit[] getSplits(org.apache.hadoop.mapred.JobConf job,
                                                              Class<?> callingClass)
                                                       throws IOException

Gets the splits of the tables that have been set on the job by reading the metadata table for the specified ranges.

Throws:

IOException