org.apache.hadoop.hive.ql.parse.OptimizeTezProcContext 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.parse;
import java.util.Deque;
import java.util.HashSet;
import java.util.Set;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.exec.AppMasterEventOperator;
import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.exec.ReduceSinkOperator;
import org.apache.hadoop.hive.ql.exec.TableScanOperator;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
/**
* OptimizeTezProcContext. OptimizeTezProcContext maintains information
* about the current operator plan as we walk the operator tree
* to do some additional optimizations on it.
*
*/
public class OptimizeTezProcContext implements NodeProcessorCtx{
public final ParseContext parseContext;
public final HiveConf conf;
public final Set inputs;
public final Set outputs;
public final Set visitedReduceSinks
= new HashSet();
public final Multimap eventOpToTableScanMap =
HashMultimap.create();
// rootOperators are all the table scan operators in sequence
// of traversal
public Deque> rootOperators;
public OptimizeTezProcContext(HiveConf conf, ParseContext parseContext, Set inputs,
Set outputs) {
this.conf = conf;
this.parseContext = parseContext;
this.inputs = inputs;
this.outputs = outputs;
}
public void setRootOperators(Deque> roots) {
this.rootOperators = roots;
}
}