Package org.apache.accumulo.hadoop.mapred

Class AccumuloRowInputFormat

java.lang.Object

org.apache.accumulo.hadoop.mapred.AccumuloRowInputFormat

All Implemented Interfaces:

org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>>

public class AccumuloRowInputFormat
extends Object
implements org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>>

Since:

2.0

See Also:

AccumuloRowInputFormat

Constructor Summary

Constructors

Constructor	Description
AccumuloRowInputFormat()

Method Summary

Modifier and Type	Method	Description
static InputFormatBuilder.ClientParams<org.apache.hadoop.mapred.JobConf>	configure()	Sets all the information required for this map reduce job.
org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>>	getRecordReader(org.apache.hadoop.mapred.InputSplit split, org.apache.hadoop.mapred.JobConf job, org.apache.hadoop.mapred.Reporter reporter)
org.apache.hadoop.mapred.InputSplit[]	getSplits(org.apache.hadoop.mapred.JobConf job, int numSplits)	Gets the splits of the tables that have been set on the job by reading the metadata table for the specified ranges.

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumuloRowInputFormat

public AccumuloRowInputFormat()

Method Detail

getSplits

public org.apache.hadoop.mapred.InputSplit[] getSplits(org.apache.hadoop.mapred.JobConf job,
                                                       int numSplits)
                                                throws IOException

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

Specified by:

getSplits in interface org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>>

Returns:

the splits from the tables based on the ranges.

Throws:

IOException - if a table set on the job doesn't exist or an error occurs initializing the tablet locator

getRecordReader

public org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>> getRecordReader(org.apache.hadoop.mapred.InputSplit split,
                                                                                                                                          org.apache.hadoop.mapred.JobConf job,
                                                                                                                                          org.apache.hadoop.mapred.Reporter reporter)
                                                                                                                                   throws IOException

Specified by:

getRecordReader in interface org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,PeekingIterator<Map.Entry<Key,Value>>>

Throws:

IOException

configure

public static InputFormatBuilder.ClientParams<org.apache.hadoop.mapred.JobConf> configure()

Sets all the information required for this map reduce job.