| /* |
| * 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.exec.work.foreman.rm; |
| |
| import org.apache.drill.common.config.DrillConfig; |
| import org.apache.drill.exec.coord.ClusterCoordinator; |
| import org.apache.drill.exec.coord.local.LocalClusterCoordinator; |
| import org.apache.drill.exec.server.DrillbitContext; |
| |
| /** |
| * Builds the proper resource manager and queue implementation for the configured |
| * system options. |
| * <p> |
| * <ul> |
| * <li>If the Drillbit is embedded<ul> |
| * <li>If queues are enabled, then the admission-controlled resource manager |
| * with the local query queue.</li> |
| * <li>Otherwise, the default resource manager and no queues.</li> |
| * </ul></li> |
| * <li>If the Drillbit is in a cluster<ul> |
| * <li>If queues are enabled, then the admission-controlled resource manager |
| * with the distributed query queue.</li> |
| * <li>Otherwise, the default resource manager and no queues.</li> |
| * </ul></li> |
| * </ul> |
| * Configuration settings: |
| * <dl> |
| * <dt>Cluster coordinator instance</dt> |
| * <dd>If an instance of <tt>LocalClusterCoordinator</tt>, the Drillbit is |
| * embedded, else it is in a cluster.</dd> |
| * <dt><tt>drill.exec.queue.embedded.enable</tt> boot config<dt> |
| * <dd>If enabled, and if embedded, then use the local queue.</dd> |
| * <dt><tt>exec.queue.enable</tt> system option</dt> |
| * <dd>If enabled, and if in a cluster, then use the distributed queue.</dd> |
| * </dl> |
| */ |
| public class ResourceManagerBuilder { |
| |
| private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ResourceManagerBuilder.class); |
| |
| private DrillbitContext context; |
| |
| public ResourceManagerBuilder(final DrillbitContext context) { |
| this.context = context; |
| } |
| |
| public ResourceManager build() { |
| ClusterCoordinator coord = context.getClusterCoordinator(); |
| DrillConfig config = context.getConfig(); |
| if (coord instanceof LocalClusterCoordinator) { |
| if (config.getBoolean(EmbeddedQueryQueue.ENABLED)) { |
| logger.debug("Enabling embedded, local query queue."); |
| return new ThrottledResourceManager(context, new EmbeddedQueryQueue(context)); |
| } else { |
| logger.debug("No query queueing enabled."); |
| return new DefaultResourceManager(); |
| } |
| } else { |
| return new DynamicResourceManager(context); |
| } |
| } |
| } |