org.apache.phoenix.pig

Class PhoenixHBaseLoader

java.lang.Object

org.apache.pig.LoadFunc

org.apache.phoenix.pig.PhoenixHBaseLoader

All Implemented Interfaces:

org.apache.pig.LoadMetadata

public final class PhoenixHBaseLoader
extends org.apache.pig.LoadFunc
implements org.apache.pig.LoadMetadata

LoadFunc to load data from HBase using Phoenix . Example usage: a) TABLE i) A = load 'hbase://table/HIRES' using org.apache.phoenix.pig.PhoenixHBaseLoader('localhost'); The above loads the data from a table 'HIRES' ii) A = load 'hbase://table/HIRES/id,name' using org.apache.phoenix.pig.PhoenixHBaseLoader('localhost'); Here, only id, name are returned from the table HIRES as part of LOAD. b) QUERY i) B = load 'hbase://query/SELECT fname, lname FROM HIRES' using org.apache.phoenix.pig.PhoenixHBaseLoader('localhost'); The above loads fname and lname columns from 'HIRES' table.

Constructor Summary

Constructors

Constructor and Description
PhoenixHBaseLoader(String zkQuorum)

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.InputFormat	getInputFormat()
org.apache.pig.data.Tuple	getNext()
String[]	getPartitionKeys(String location, org.apache.hadoop.mapreduce.Job job)
org.apache.pig.ResourceSchema	getSchema(String location, org.apache.hadoop.mapreduce.Job job)
org.apache.pig.ResourceStatistics	getStatistics(String location, org.apache.hadoop.mapreduce.Job job)
void	prepareToRead(org.apache.hadoop.mapreduce.RecordReader reader, org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit split)
String	relativeToAbsolutePath(String location, org.apache.hadoop.fs.Path curDir)
void	setLocation(String location, org.apache.hadoop.mapreduce.Job job)
void	setPartitionFilter(org.apache.pig.Expression partitionFilter)
void	setUDFContextSignature(String signature)

Methods inherited from class org.apache.pig.LoadFunc

getAbsolutePath, getLoadCaster, getPathStrings, join, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

PhoenixHBaseLoader

public PhoenixHBaseLoader(String zkQuorum)

Parameters:

zkQuorum -

Method Detail

setLocation

public void setLocation(String location,
                        org.apache.hadoop.mapreduce.Job job)
                 throws IOException

Specified by:

setLocation in class org.apache.pig.LoadFunc

Throws:

IOException

relativeToAbsolutePath

public String relativeToAbsolutePath(String location,
                                     org.apache.hadoop.fs.Path curDir)
                              throws IOException

Overrides:

relativeToAbsolutePath in class org.apache.pig.LoadFunc

Throws:

IOException

getInputFormat

public org.apache.hadoop.mapreduce.InputFormat getInputFormat()
                                                       throws IOException

Specified by:

getInputFormat in class org.apache.pig.LoadFunc

Throws:

IOException

prepareToRead

public void prepareToRead(org.apache.hadoop.mapreduce.RecordReader reader,
                          org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit split)
                   throws IOException

Specified by:

prepareToRead in class org.apache.pig.LoadFunc

Throws:

IOException

setUDFContextSignature

public void setUDFContextSignature(String signature)

Overrides:

setUDFContextSignature in class org.apache.pig.LoadFunc

getNext

public org.apache.pig.data.Tuple getNext()
                                  throws IOException

Specified by:

getNext in class org.apache.pig.LoadFunc

Throws:

IOException

getSchema

public org.apache.pig.ResourceSchema getSchema(String location,
                                               org.apache.hadoop.mapreduce.Job job)
                                        throws IOException

Specified by:

getSchema in interface org.apache.pig.LoadMetadata

Throws:

IOException

getStatistics

public org.apache.pig.ResourceStatistics getStatistics(String location,
                                                       org.apache.hadoop.mapreduce.Job job)
                                                throws IOException

Specified by:

getStatistics in interface org.apache.pig.LoadMetadata

Throws:

IOException

getPartitionKeys

public String[] getPartitionKeys(String location,
                                 org.apache.hadoop.mapreduce.Job job)
                          throws IOException

Specified by:

getPartitionKeys in interface org.apache.pig.LoadMetadata

Throws:

IOException

setPartitionFilter

public void setPartitionFilter(org.apache.pig.Expression partitionFilter)
                        throws IOException

Specified by:

setPartitionFilter in interface org.apache.pig.LoadMetadata

Throws:

IOException