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*
* 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,
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* See the License for the specific language governing permissions and
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package org.apache.hadoop.hbase.master;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.net.SocketTimeoutException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.CoordinatedStateManager;
import org.apache.hadoop.hbase.CoordinatedStateManagerFactory;
import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsMasterRunningRequest;
import org.apache.hadoop.hbase.security.User;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.protobuf.BlockingRpcChannel;
import com.google.protobuf.ServiceException;
@Category(MediumTests.class)
public class TestHMasterRPCException {
@Test
public void testRPCException() throws Exception {
HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
TEST_UTIL.startMiniZKCluster();
Configuration conf = TEST_UTIL.getConfiguration();
conf.set(HConstants.MASTER_PORT, "0");
CoordinatedStateManager cp = CoordinatedStateManagerFactory.getCoordinatedStateManager(conf);
HMaster hm = new HMaster(conf, cp);
ServerName sm = hm.getServerName();
RpcClient rpcClient = new RpcClient(conf, HConstants.CLUSTER_ID_DEFAULT);
try {
int i = 0;
//retry the RPC a few times; we have seen SocketTimeoutExceptions if we
//try to connect too soon. Retry on SocketTimeoutException.
while (i < 20) {
try {
BlockingRpcChannel channel =
rpcClient.createBlockingRpcChannel(sm, User.getCurrent(), 0);
MasterProtos.MasterService.BlockingInterface stub =
MasterProtos.MasterService.newBlockingStub(channel);
stub.isMasterRunning(null, IsMasterRunningRequest.getDefaultInstance());
fail();
} catch (ServiceException ex) {
IOException ie = ProtobufUtil.getRemoteException(ex);
if (!(ie instanceof SocketTimeoutException)) {
if (ie.getMessage().startsWith("org.apache.hadoop.hbase.ipc." +
"ServerNotRunningYetException: Server is not running yet")) {
// Done. Got the exception we wanted.
System.out.println("Expected exception: " + ie.getMessage());
return;
} else {
throw ex;
}
} else {
System.err.println("Got SocketTimeoutException. Will retry. ");
}
} catch (Throwable t) {
fail("Unexpected throwable: " + t);
}
Thread.sleep(100);
i++;
}
fail();
} finally {
rpcClient.stop();
}
}
}