org.apache.hadoop.hive.ql.ddl.workloadmanagement.resourceplan.show.ShowResourcePlanAnalyzer 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.ddl.workloadmanagement.resourceplan.show;
import org.apache.hadoop.hive.ql.QueryState;
import org.apache.hadoop.hive.ql.ddl.DDLUtils;
import org.apache.hadoop.hive.ql.ddl.DDLWork;
import org.apache.hadoop.hive.ql.ddl.DDLSemanticAnalyzerFactory.DDLType;
import org.apache.hadoop.hive.ql.exec.Task;
import org.apache.hadoop.hive.ql.exec.TaskFactory;
import org.apache.hadoop.hive.ql.parse.ASTNode;
import org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer;
import org.apache.hadoop.hive.ql.parse.HiveParser;
import org.apache.hadoop.hive.ql.parse.SemanticException;
/**
* Analyzer for show resource plan commands.
*/
@DDLType(types = HiveParser.TOK_SHOW_RP)
public class ShowResourcePlanAnalyzer extends BaseSemanticAnalyzer {
public ShowResourcePlanAnalyzer(QueryState queryState) throws SemanticException {
super(queryState);
}
@Override
public void analyzeInternal(ASTNode root) throws SemanticException {
if (root.getChildCount() > 1) {
throw new SemanticException("Invalid syntax for SHOW RESOURCE PLAN statement");
}
ctx.setResFile(ctx.getLocalTmpPath());
String resourcePlanName = (root.getChildCount() == 0) ? null : unescapeIdentifier(root.getChild(0).getText());
ShowResourcePlanDesc desc = new ShowResourcePlanDesc(resourcePlanName, ctx.getResFile().toString());
Task task = TaskFactory.get(new DDLWork(getInputs(), getOutputs(), desc));
rootTasks.add(task);
task.setFetchSource(true);
setFetchTask(createFetchTask(desc.getSchema()));
DDLUtils.addServiceOutput(conf, getOutputs());
}
}