org.apache.hcatalog.mapreduce

Class HCatUtils

java.lang.Object

org.apache.hcatalog.mapreduce.HCatUtils

public class HCatUtils
extends Object

Utility methods copied from HCatalog because of visibility restrictions.

Method Summary

Modifier and Type	Method and Description
static org.apache.hcatalog.mapreduce.HCatSplit	castToHCatSplit(org.apache.hadoop.mapreduce.InputSplit split) Cast an InputSplit to HCatSplit.
static org.apache.hcatalog.mapreduce.InputJobInfo	getInputJobInfo(org.apache.hadoop.conf.Configuration conf, org.apache.hcatalog.mapreduce.InputJobInfo inputJobInfo) Returns the given InputJobInfo after populating with data queried from the metadata service.
static org.apache.hadoop.mapreduce.RecordReader	newHCatReader(org.apache.hcatalog.mapreduce.HCatStorageHandler storageHandler, Map<String,String> valuesNotInDataCols) Create a new HCatRecordReader.

Methods inherited from class java.lang.Object

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

Method Detail

getInputJobInfo

public static org.apache.hcatalog.mapreduce.InputJobInfo getInputJobInfo(org.apache.hadoop.conf.Configuration conf,
                                                                         org.apache.hcatalog.mapreduce.InputJobInfo inputJobInfo)
                                                                  throws IOException

Returns the given InputJobInfo after populating with data queried from the metadata service.

Parameters:

conf - Configuration

inputJobInfo - Input job info

Returns:

Populated input job info

Throws:

IOException

newHCatReader

public static org.apache.hadoop.mapreduce.RecordReader newHCatReader(org.apache.hcatalog.mapreduce.HCatStorageHandler storageHandler,
                                                                     Map<String,String> valuesNotInDataCols)

Create a new HCatRecordReader.

Parameters:

storageHandler - Storage handler

valuesNotInDataCols - Values not in data columns

Returns:

Record reader

castToHCatSplit

public static org.apache.hcatalog.mapreduce.HCatSplit castToHCatSplit(org.apache.hadoop.mapreduce.InputSplit split)
                                                               throws IOException

Cast an InputSplit to HCatSplit.

Parameters:

split - Input split

Returns:

HCatSplit

Throws:

IOException