| /* |
| * 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.ExecConstants; |
| import org.apache.drill.exec.server.DrillbitContext; |
| |
| /** |
| * Abstract base class for a resource manager. Handles tasks common to all |
| * resource managers: learning the resources available on this Drillbit. |
| * In the current version, Drillbits must be symmetrical, so that knowing |
| * the resources on one node is sufficient to know resources available on |
| * all nodes. |
| */ |
| |
| public abstract class AbstractResourceManager implements ResourceManager { |
| |
| protected final DrillbitContext context; |
| private final long memoryPerNode; |
| private final int cpusPerNode; |
| |
| public AbstractResourceManager(final DrillbitContext context) { |
| this.context = context; |
| DrillConfig config = context.getConfig(); |
| |
| // Normally we use the actual direct memory configured on the JVM command |
| // line. However, if the config param is set, we use that instead (if it is |
| // lower than actual memory). Primarily for testing. |
| |
| long memLimit = DrillConfig.getMaxDirectMemory(); |
| long configMemoryPerNode = config.getBytes(ExecConstants.MAX_MEMORY_PER_NODE); |
| if (configMemoryPerNode > 0) { |
| memLimit = Math.min(memLimit, configMemoryPerNode); |
| } |
| memoryPerNode = memLimit; |
| |
| // Do the same for CPUs. |
| |
| int cpuLimit = Runtime.getRuntime().availableProcessors(); |
| int configCpusPerNode = config.getInt(ExecConstants.MAX_CPUS_PER_NODE); |
| if (configCpusPerNode > 0) { |
| cpuLimit = Math.min(cpuLimit, configCpusPerNode); |
| } |
| cpusPerNode = cpuLimit; |
| } |
| |
| @Override |
| public long memoryPerNode() { return memoryPerNode; } |
| |
| @Override |
| public int cpusPerNode() { return cpusPerNode; } |
| } |