org.apache.hadoop.hive.ql.exec.mr
Class HashTableLoader
java.lang.Object
org.apache.hadoop.hive.ql.exec.mr.HashTableLoader
- All Implemented Interfaces:
- HashTableLoader
public class HashTableLoader
- extends Object
- implements HashTableLoader
HashTableLoader for MR loads the hashtable for MapJoins from local disk (hashtables
are distributed by using the DistributedCache.
HashTableLoader
public HashTableLoader()
init
public void init(ExecMapperContext context,
org.apache.hadoop.conf.Configuration hconf,
MapJoinOperator joinOp)
- Specified by:
init
in interface HashTableLoader
load
public void load(MapJoinTableContainer[] mapJoinTables,
MapJoinTableContainerSerDe[] mapJoinTableSerdes)
throws HiveException
- Specified by:
load
in interface HashTableLoader
- Throws:
HiveException
Copyright © 2014 The Apache Software Foundation. All rights reserved.