/**
* 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);
}
}