| /* |
| * 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.drill.yarn.appMaster; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.drill.common.util.GuavaPatcher; |
| import org.apache.drill.common.util.ProtobufPatcher; |
| import org.apache.drill.yarn.appMaster.ControllerFactory.ControllerFactoryException; |
| import org.apache.drill.yarn.appMaster.http.WebServer; |
| import org.apache.drill.yarn.core.DoyConfigException; |
| import org.apache.drill.yarn.core.DrillOnYarnConfig; |
| |
| /** |
| * Application Master for Drill. The name is visible when using the "jps" |
| * command and is chosen to make sense on a busy YARN node. |
| * <p> |
| * To debug this AM use the customized unmanaged AM launcher in this |
| * jar. (The "stock" YARN version does not give you time to attach |
| * the debugger.) |
| * <pre><code> |
| * TARGET_JAR=/your-git-folder/drill-yarn/target/drill-yarn-1.6-SNAPSHOT.jar |
| * TARGET_CLASS=org.apache.drill.yarn.appMaster.ApplicationMaster |
| * LAUNCHER_JAR=$TARGET_JAR |
| * LAUNCHER_CLASS=org.apache.drill.yarn.mock.UnmanagedAMLauncher |
| * $HH/bin/hadoop jar $LAUNCHER_JAR \ |
| * $LAUNCHER_CLASS -classpath $TARGET_JAR \ |
| * -cmd "java -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005 \ |
| * $TARGET_CLASS" |
| * </pre></code> |
| */ |
| |
| public class DrillApplicationMaster { |
| |
| static { |
| /* |
| * Drill-on-YARN uses Hadoop dependencies that use older version of protobuf, |
| * and override some methods that became final in recent protobuf versions. |
| * This code removes these final modifiers. |
| */ |
| ProtobufPatcher.patch(); |
| /* |
| * HBase client uses older version of Guava's Stopwatch API, |
| * while Drill ships with 18.x which has changes the scope of |
| * these API to 'package', this code make them accessible. |
| */ |
| GuavaPatcher.patch(); |
| } |
| |
| private static final Log LOG = LogFactory |
| .getLog(DrillApplicationMaster.class); |
| |
| public static void main(String[] args) { |
| LOG.trace("Drill Application Master starting."); |
| |
| // Load the configuration. Assumes that the user's Drill-on-YARN |
| // configuration was archived along with the Drill software in |
| // the $DRILL_HOME/conf directory, and that $DRILL_HOME/conf is |
| // on the class-path. |
| |
| try { |
| DrillOnYarnConfig.load().setAmDrillHome(); |
| } catch (DoyConfigException e) { |
| System.err.println(e.getMessage()); |
| System.exit(-1); |
| } |
| |
| // Build the dispatcher using the Drillbit factory. Allows inserting |
| // other factories for testing, or if we need to manage a cluster of |
| // processes other than Drillbits. |
| |
| // Dispatcher am = (new SimpleBatchFactory( )).build( ); |
| // Dispatcher am = (new MockDrillbitFactory( )).build( ); |
| Dispatcher dispatcher; |
| try { |
| dispatcher = (new DrillControllerFactory()).build(); |
| } catch (ControllerFactoryException e) { |
| LOG.error("Setup failed, exiting: " + e.getMessage(), e); |
| System.exit(-1); |
| return; |
| } |
| |
| // Start the Dispatcher. This will return false if this AM conflicts with |
| // a running AM. |
| |
| try { |
| if (!dispatcher.start()) { |
| return; |
| } |
| } catch (Throwable e) { |
| LOG.error("Fatal error, exiting: " + e.getMessage(), e); |
| System.exit(-1); |
| } |
| |
| // Create and start the web server. Do this after starting the AM |
| // so that we don't learn about a conflict via the a web server port |
| // conflict. |
| |
| WebServer webServer = new WebServer(dispatcher); |
| try { |
| webServer.start(); |
| } catch (Exception e) { |
| LOG.error("Web server setup failed, exiting: " + e.getMessage(), e); |
| System.exit(-1); |
| } |
| |
| // Run the dispatcher until the cluster shuts down. |
| |
| try { |
| dispatcher.run(); |
| } catch (Throwable e) { |
| LOG.error("Fatal error, exiting: " + e.getMessage(), e); |
| System.exit(-1); |
| } finally { |
| try { |
| webServer.close(); |
| } catch (Exception e) { |
| // Ignore |
| } |
| } |
| } |
| } |