DummyMemoryCalculatorPlugin.java
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
文件大小:2k
源码类别:
网格计算
开发平台:
Java
- /**
- * 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.mapred;
- import org.apache.hadoop.util.MemoryCalculatorPlugin;
- /**
- * Plugin class to test virtual and physical memories reported by TT. Use
- * configuration items {@link #MAXVMEM_TESTING_PROPERTY} and
- * {@link #MAXPMEM_TESTING_PROPERTY} to tell TT the total vmem and the total
- * pmem.
- */
- public class DummyMemoryCalculatorPlugin extends MemoryCalculatorPlugin {
- /** max vmem on the TT */
- public static final String MAXVMEM_TESTING_PROPERTY =
- "mapred.tasktracker.maxvmem.testing";
- /** max pmem on the TT */
- public static final String MAXPMEM_TESTING_PROPERTY =
- "mapred.tasktracker.maxpmem.testing";
- /** {@inheritDoc} */
- @Override
- public long getVirtualMemorySize() {
- return getConf().getLong(MAXVMEM_TESTING_PROPERTY, -1);
- }
- /** {@inheritDoc} */
- @Override
- public long getPhysicalMemorySize() {
- return getConf().getLong(MAXPMEM_TESTING_PROPERTY, -1);
- }
- }