/**
* Copyright The Apache Software Foundation
*
* 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.client;
import static org.junit.Assert.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.exceptions.MasterNotRunningException;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.ipc.RandomTimeoutRpcEngine;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(MediumTests.class)
public class TestClientTimeouts {
final Log LOG = LogFactory.getLog(getClass());
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
protected static int SLAVES = 1;
/**
* @throws java.lang.Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
Configuration conf = TEST_UTIL.getConfiguration();
TEST_UTIL.startMiniCluster(SLAVES);
}
/**
* @throws java.lang.Exception
*/
@AfterClass
public static void tearDownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
/**
* Test that a client that fails an RPC to the master retries properly and
* doesn't throw any unexpected exceptions.
* @throws Exception
*/
@Test
public void testAdminTimeout() throws Exception {
long lastLimit = HConstants.DEFAULT_HBASE_CLIENT_PREFETCH_LIMIT;
HConnection lastConnection = null;
boolean lastFailed = false;
int initialInvocations = RandomTimeoutRpcEngine.getNumberOfInvocations();
RandomTimeoutRpcEngine engine = new RandomTimeoutRpcEngine(TEST_UTIL.getConfiguration());
try {
for (int i = 0; i < 5 || (lastFailed && i < 100); ++i) {
lastFailed = false;
// Ensure the HBaseAdmin uses a new connection by changing Configuration.
Configuration conf = HBaseConfiguration.create(TEST_UTIL.getConfiguration());
conf.setLong(HConstants.HBASE_CLIENT_PREFETCH_LIMIT, ++lastLimit);
try {
HBaseAdmin admin = new HBaseAdmin(conf);
HConnection connection = admin.getConnection();
assertFalse(connection == lastConnection);
lastConnection = connection;
// override the connection's rpc engine for timeout testing
((HConnectionManager.HConnectionImplementation)connection).setRpcEngine(engine);
// run some admin commands
HBaseAdmin.checkHBaseAvailable(conf);
admin.setBalancerRunning(false, false);
} catch (MasterNotRunningException ex) {
// Since we are randomly throwing SocketTimeoutExceptions, it is possible to get
// a MasterNotRunningException. It's a bug if we get other exceptions.
lastFailed = true;
}
}
// Ensure the RandomTimeoutRpcEngine is actually being used.
assertFalse(lastFailed);
assertTrue(RandomTimeoutRpcEngine.getNumberOfInvocations() > initialInvocations);
} finally {
engine.close();
}
}
}