org.apache.hadoop.hive.ql.plan.CommonMergeJoinDesc Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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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package org.apache.hadoop.hive.ql.plan;
import java.io.Serializable;
import org.apache.hadoop.hive.ql.plan.Explain.Level;
@Explain(displayName = "Merge Join Operator", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
public class CommonMergeJoinDesc extends MapJoinDesc implements Serializable {
private static final long serialVersionUID = 1L;
private int numBuckets;
private int mapJoinConversionPos;
CommonMergeJoinDesc() {
}
public CommonMergeJoinDesc(int numBuckets, int mapJoinConversionPos,
MapJoinDesc joinDesc) {
super(joinDesc);
this.numBuckets = numBuckets;
this.mapJoinConversionPos = mapJoinConversionPos;
}
public int getNumBuckets() {
return numBuckets;
}
public int getBigTablePosition() {
return mapJoinConversionPos;
}
public void setBigTablePosition(int pos) {
mapJoinConversionPos = pos;
}
@Override
public boolean isSame(OperatorDesc other) {
if (super.isSame(other)) {
CommonMergeJoinDesc otherDesc = (CommonMergeJoinDesc) other;
return getNumBuckets() == otherDesc.getNumBuckets();
}
return false;
}
}