Java tutorial
/* * 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.sysml.yarn; import java.io.IOException; import java.util.ArrayList; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.log4j.Level; import org.apache.log4j.Logger; import org.apache.sysml.conf.DMLConfig; import org.apache.sysml.hops.OptimizerUtils.OptimizationLevel; import org.apache.sysml.runtime.DMLRuntimeException; import org.apache.sysml.runtime.controlprogram.Program; import org.apache.sysml.runtime.controlprogram.ProgramBlock; import org.apache.sysml.yarn.ropt.ResourceConfig; import org.apache.sysml.yarn.ropt.ResourceOptimizer; import org.apache.sysml.yarn.ropt.YarnClusterAnalyzer; import org.apache.sysml.yarn.ropt.YarnClusterConfig; import org.apache.sysml.yarn.ropt.YarnOptimizerUtils; import org.apache.sysml.yarn.ropt.YarnOptimizerUtils.GridEnumType; /** * The sole purpose of this class is to serve as a proxy to * DMLYarnClient to handle class not found exceptions or any * other issues of spawning the DML App Master. * */ public class DMLYarnClientProxy { private static final Log LOG = LogFactory.getLog(DMLYarnClientProxy.class); //flags to enabled resource optimizer / debugging (this does not disable external configurations) protected static boolean RESOURCE_OPTIMIZER = false; protected static boolean LDEBUG = false; static { // for internal debugging only if (LDEBUG) { Logger.getLogger("org.apache.sysml.yarn").setLevel((Level) Level.DEBUG); } } public static boolean launchDMLYarnAppmaster(String dmlScriptStr, DMLConfig conf, String[] allArgs, Program rtprog) throws IOException, DMLRuntimeException { boolean ret = false; try { //check for need for resource optimization //if( conf.getIntValue(DMLConfig.YARN_APPMASTERMEM) < 0 ) // RESOURCE_OPTIMIZER = true; //optimize resources (and update configuration) if (DMLAppMasterUtils.isResourceOptimizerEnabled()) { LOG.warn("Optimization level '" + OptimizationLevel.O3_LOCAL_RESOURCE_TIME_MEMORY + "' " + "is still in experimental state and not intended for production use."); YarnClusterConfig cc = YarnClusterAnalyzer.getClusterConfig(); DMLAppMasterUtils.setupRemoteParallelTasks(cc); ArrayList<ProgramBlock> pb = DMLAppMasterUtils.getRuntimeProgramBlocks(rtprog); ResourceConfig rc = ResourceOptimizer.optimizeResourceConfig(pb, cc, GridEnumType.HYBRID_MEM_EXP_GRID, GridEnumType.HYBRID_MEM_EXP_GRID); conf.updateYarnMemorySettings(String.valueOf(YarnOptimizerUtils.toMB(rc.getCPResource())), rc.serialize()); //alternative: only use the max mr memory for all statement blocks //conf.updateYarnMemorySettings(String.valueOf(rc.getCPResource()), String.valueOf(rc.getMaxMRResource())); } //launch dml yarn app master DMLYarnClient yclient = new DMLYarnClient(dmlScriptStr, conf, allArgs); ret = yclient.launchDMLYarnAppmaster(); } catch (NoClassDefFoundError ex) { LOG.warn("Failed to instantiate DML yarn client " + "(NoClassDefFoundError: " + ex.getMessage() + "). " + "Resume with default client processing."); ret = false; } return ret; } }