/**
*
* 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.hbase.regionserver;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.RequestConverter;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest;
import com.google.protobuf.ServiceException;
/**
* A region server that will OOME.
* Everytime {@link #put(regionName, Durability)} is called, we add
* keep around a reference to the batch. Use this class to test OOME extremes.
* Needs to be started manually as in
* <code>${HBASE_HOME}/bin/hbase ./bin/hbase org.apache.hadoop.hbase.OOMERegionServer start</code>.
*/
public class OOMERegionServer extends HRegionServer {
private List<Put> retainer = new ArrayList<Put>();
public OOMERegionServer(HBaseConfiguration conf) throws IOException, InterruptedException {
super(conf);
}
public void put(byte [] regionName, Put put)
throws IOException {
try {
MutateRequest request =
RequestConverter.buildMutateRequest(regionName, put);
super.mutate(null, request);
for (int i = 0; i < 30; i++) {
// Add the batch update 30 times to bring on the OOME faster.
this.retainer.add(put);
}
} catch (ServiceException se) {
throw ProtobufUtil.getRemoteException(se);
}
}
public static void main(String[] args) {
new HRegionServerCommandLine(OOMERegionServer.class).doMain(args);
}
}