org.apache.flink.runtime.operators.hash.HashJoinIteratorBase Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.runtime.operators.hash;
import org.apache.flink.api.common.typeutils.TypeComparator;
import org.apache.flink.api.common.typeutils.TypePairComparator;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.core.memory.MemorySegment;
import org.apache.flink.runtime.io.disk.iomanager.IOManager;
import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
import org.apache.flink.runtime.memory.MemoryAllocationException;
import org.apache.flink.runtime.memory.MemoryManager;
import java.util.List;
/**
* Common methods for all Hash Join Iterators.
*/
public class HashJoinIteratorBase {
public MutableHashTable getHashJoin(
TypeSerializer buildSideSerializer,
TypeComparator buildSideComparator,
TypeSerializer probeSideSerializer,
TypeComparator probeSideComparator,
TypePairComparator pairComparator,
MemoryManager memManager,
IOManager ioManager,
AbstractInvokable ownerTask,
double memoryFraction,
boolean useBloomFilters) throws MemoryAllocationException {
final int numPages = memManager.computeNumberOfPages(memoryFraction);
final List memorySegments = memManager.allocatePages(ownerTask, numPages);
return new MutableHashTable(buildSideSerializer, probeSideSerializer,
buildSideComparator, probeSideComparator, pairComparator,
memorySegments, ioManager,
useBloomFilters);
}
}