/tags/release-0.0.0-rc0/hive/external/ql/src/java/org/apache/hadoop/hive/ql/exec/TaskRunner.java
Java | 64 lines | 30 code | 11 blank | 23 comment | 0 complexity | 39303efe09e2dd00cdd508eb3b8d43a2 MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, JSON, CPL-1.0
- /**
- * 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.session.SessionState;
- /**
- * TaskRunner implementation.
- **/
- public class TaskRunner extends Thread {
- protected Task<? extends Serializable> tsk;
- protected TaskResult result;
- protected SessionState ss;
- public TaskRunner(Task<? extends Serializable> tsk, TaskResult result) {
- this.tsk = tsk;
- this.result = result;
- ss = SessionState.get();
- }
- public Task<? extends Serializable> getTask() {
- return tsk;
- }
- @Override
- public void run() {
- SessionState.start(ss);
- runSequential();
- }
- /**
- * Launches a task, and sets its exit value in the result variable.
- */
- public void runSequential() {
- int exitVal = -101;
- try {
- exitVal = tsk.executeTask();
- } catch (Throwable t) {
- t.printStackTrace();
- }
- result.setExitVal(exitVal);
- }
- }