1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | |
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19 | package org.apache.hadoop.mapred; |
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20 | |
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21 | import org.apache.hadoop.util.MemoryCalculatorPlugin; |
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22 | |
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23 | /** |
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24 | * Plugin class to test virtual and physical memories reported by TT. Use |
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25 | * configuration items {@link #MAXVMEM_TESTING_PROPERTY} and |
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26 | * {@link #MAXPMEM_TESTING_PROPERTY} to tell TT the total vmem and the total |
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27 | * pmem. |
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28 | */ |
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29 | public class DummyMemoryCalculatorPlugin extends MemoryCalculatorPlugin { |
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30 | |
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31 | /** max vmem on the TT */ |
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32 | public static final String MAXVMEM_TESTING_PROPERTY = |
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33 | "mapred.tasktracker.maxvmem.testing"; |
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34 | /** max pmem on the TT */ |
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35 | public static final String MAXPMEM_TESTING_PROPERTY = |
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36 | "mapred.tasktracker.maxpmem.testing"; |
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37 | |
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38 | /** {@inheritDoc} */ |
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39 | @Override |
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40 | public long getVirtualMemorySize() { |
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41 | return getConf().getLong(MAXVMEM_TESTING_PROPERTY, -1); |
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42 | } |
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43 | |
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44 | /** {@inheritDoc} */ |
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45 | @Override |
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46 | public long getPhysicalMemorySize() { |
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47 | return getConf().getLong(MAXPMEM_TESTING_PROPERTY, -1); |
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48 | } |
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49 | } |
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