/**
* 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.hooks;
import org.apache.hadoop.hive.ql.QueryProperties;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
/**
*
* CheckQueryPropertiesHook.
*
* This hook prints the values in the QueryProperties object contained in the QueryPlan
* in the HookContext passed to the hook.
*/
public class CheckQueryPropertiesHook implements ExecuteWithHookContext {
public void run(HookContext hookContext) {
LogHelper console = SessionState.getConsole();
if (console == null) {
return;
}
QueryProperties queryProps = hookContext.getQueryPlan().getQueryProperties();
if (queryProps != null) {
console.printError("Has Join: " + queryProps.hasJoin());
console.printError("Has Group By: " + queryProps.hasGroupBy());
console.printError("Has Sort By: " + queryProps.hasSortBy());
console.printError("Has Order By: " + queryProps.hasOrderBy());
console.printError("Has Group By After Join: " + queryProps.hasJoinFollowedByGroupBy());
console.printError("Uses Script: " + queryProps.usesScript());
console.printError("Has Distribute By: " + queryProps.hasDistributeBy());
console.printError("Has Cluster By: " + queryProps.hasClusterBy());
}
}
}