/**
* 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.parse;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.parse.spark.SparkCompiler;
/**
* TaskCompilerFactory is a factory class to choose the appropriate
* TaskCompiler.
*/
public class TaskCompilerFactory {
private TaskCompilerFactory() {
// avoid instantiation
}
/**
* Returns the appropriate compiler to translate the operator tree
* into executable units.
*/
public static TaskCompiler getCompiler(HiveConf conf, ParseContext parseContext) {
if (HiveConf.getVar(conf, HiveConf.ConfVars.HIVE_EXECUTION_ENGINE).equals("tez")) {
return new TezCompiler();
} else if (HiveConf.getVar(conf, HiveConf.ConfVars.HIVE_EXECUTION_ENGINE).equals("spark")) {
return new SparkCompiler();
} else {
return new MapReduceCompiler();
}
}
}