hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/OOMERegionServer.java

   1 /**
   2  *
   3  * Licensed to the Apache Software Foundation (ASF) under one
   4  * or more contributor license agreements.  See the NOTICE file
   5  * distributed with this work for additional information
   6  * regarding copyright ownership.  The ASF licenses this file
   7  * to you under the Apache License, Version 2.0 (the
   8  * "License"); you may not use this file except in compliance
   9  * with the License.  You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  */
  19 package org.apache.hadoop.hbase.regionserver;
  20
  21 import java.io.IOException;
  22 import java.util.ArrayList;
  23 import java.util.List;
  24
  25 import org.apache.hadoop.hbase.HBaseConfiguration;
  26 import org.apache.hadoop.hbase.client.Put;
  27 import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
  28 import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
  29 import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateRequest;
  30
  31 /**
  32  * A region server that will OOME.
  33  * Everytime {@link #put(byte[], Put)} is called, we add
  34  * keep around a reference to the batch.  Use this class to test OOME extremes.
  35  * Needs to be started manually as in
  36  * <code>${HBASE_HOME}/bin/hbase ./bin/hbase org.apache.hadoop.hbase.OOMERegionServer start</code>.
  37  */
  38 public class OOMERegionServer extends HRegionServer {
  39   private List<Put> retainer = new ArrayList<>();
  40
  41   public OOMERegionServer(HBaseConfiguration conf) throws IOException, InterruptedException {
  42     super(conf);
  43   }
  44
  45   public void put(byte [] regionName, Put put)
  46   throws IOException {
  47     try {
  48       MutateRequest request =
  49         RequestConverter.buildMutateRequest(regionName, put);
  50       rpcServices.mutate(null, request);
  51       for (int i = 0; i < 30; i++) {
  52         // Add the batch update 30 times to bring on the OOME faster.
  53         this.retainer.add(put);
  54       }
  55     } catch (org.apache.hbase.thirdparty.com.google.protobuf.ServiceException e) {
  56       throw ProtobufUtil.handleRemoteException(e);
  57     }
  58   }
  59
  60   public static void main(String[] args) {
  61     new HRegionServerCommandLine(OOMERegionServer.class).doMain(args);
  62   }
  63 }