org.apache.hadoop.hive.ql.exec.DependencyCollectionTask 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;
import java.io.Serializable;
import org.apache.hadoop.hive.ql.Context;
import org.apache.hadoop.hive.ql.DriverContext;
import org.apache.hadoop.hive.ql.plan.DependencyCollectionWork;
import org.apache.hadoop.hive.ql.plan.api.StageType;
/**
* DependencyCollectionTask.
*
* Exists for the sole purpose of reducing the number of dependency edges in the task graph.
**/
public class DependencyCollectionTask extends Task
implements Serializable {
private static final long serialVersionUID = 1L;
public DependencyCollectionTask() {
super();
}
@Override
public int execute(DriverContext driverContext) {
return 0;
}
@Override
public StageType getType() {
return StageType.DEPENDENCY_COLLECTION;
}
@Override
public String getName() {
return "DEPENDENCY_COLLECTION";
}
}