org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedCreateHashTable Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinKey;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainer;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainer.ReusableGetAdaptor;
import org.apache.hadoop.hive.ql.plan.MapJoinDesc;
import org.apache.hadoop.hive.ql.plan.VectorMapJoinDesc;
import org.apache.hadoop.hive.ql.plan.VectorMapJoinDesc.HashTableKeyType;
import org.apache.hadoop.hive.ql.plan.VectorMapJoinDesc.HashTableKind;
/**
*/
public class VectorMapJoinOptimizedCreateHashTable {
private static final Log LOG = LogFactory.getLog(VectorMapJoinOptimizedCreateHashTable.class.getName());
public static VectorMapJoinOptimizedHashTable createHashTable(MapJoinDesc desc,
MapJoinTableContainer mapJoinTableContainer) {
MapJoinKey refKey = mapJoinTableContainer.getAnyKey();
ReusableGetAdaptor hashMapRowGetter = mapJoinTableContainer.createGetter(refKey);
boolean isOuterJoin = !desc.isNoOuterJoin();
VectorMapJoinDesc vectorDesc = desc.getVectorDesc();
HashTableKind hashTableKind = vectorDesc.hashTableKind();
HashTableKeyType hashTableKeyType = vectorDesc.hashTableKeyType();
boolean minMaxEnabled = vectorDesc.minMaxEnabled();
VectorMapJoinOptimizedHashTable hashTable = null;
switch (hashTableKeyType) {
case BOOLEAN:
case BYTE:
case SHORT:
case INT:
case LONG:
switch (hashTableKind) {
case HASH_MAP:
hashTable = new VectorMapJoinOptimizedLongHashMap(
minMaxEnabled, isOuterJoin, hashTableKeyType,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_MULTISET:
hashTable = new VectorMapJoinOptimizedLongHashMultiSet(
minMaxEnabled, isOuterJoin, hashTableKeyType,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_SET:
hashTable = new VectorMapJoinOptimizedLongHashSet(
minMaxEnabled, isOuterJoin, hashTableKeyType,
mapJoinTableContainer, hashMapRowGetter);
break;
}
break;
case STRING:
switch (hashTableKind) {
case HASH_MAP:
hashTable = new VectorMapJoinOptimizedStringHashMap(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_MULTISET:
hashTable = new VectorMapJoinOptimizedStringHashMultiSet(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_SET:
hashTable = new VectorMapJoinOptimizedStringHashSet(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
}
break;
case MULTI_KEY:
switch (hashTableKind) {
case HASH_MAP:
hashTable = new VectorMapJoinOptimizedMultiKeyHashMap(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_MULTISET:
hashTable = new VectorMapJoinOptimizedMultiKeyHashMultiSet(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
case HASH_SET:
hashTable = new VectorMapJoinOptimizedMultiKeyHashSet(
isOuterJoin,
mapJoinTableContainer, hashMapRowGetter);
break;
}
break;
}
return hashTable;
}
/*
@Override
public com.esotericsoftware.kryo.io.Output getHybridBigTableSpillOutput(int partitionId) {
HybridHashTableContainer ht = (HybridHashTableContainer) mapJoinTableContainer;
HashPartition hp = ht.getHashPartitions()[partitionId];
return hp.getMatchfileOutput();
}
*/
}