HBASE-6011. Unable to start master in local mode

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1339902 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Kyle Purtell 2012-05-17 22:35:16 +00:00
parent f460eaadb8
commit a7083731c8
2 changed files with 132 additions and 1 deletions

View File

@ -71,6 +71,7 @@ public class LocalHBaseCluster {
/** 'local:' */
public static final String LOCAL_COLON = LOCAL + ":";
private final Configuration conf;
private final Class<? extends HMaster> masterClass;
private final Class<? extends HRegionServer> regionServerClass;
/**
@ -143,6 +144,8 @@ public class LocalHBaseCluster {
// clash over default ports.
conf.set(HConstants.MASTER_PORT, "0");
conf.set(HConstants.REGIONSERVER_PORT, "0");
this.masterClass = (Class<? extends HMaster>)
conf.getClass(HConstants.MASTER_IMPL, masterClass);
// Start the HMasters.
for (int i = 0; i < noMasters; i++) {
addMaster(new Configuration(conf), i);
@ -196,7 +199,7 @@ public class LocalHBaseCluster {
// its HConnection instance rather than share (see HBASE_INSTANCES down in
// the guts of HConnectionManager.
JVMClusterUtil.MasterThread mt = JVMClusterUtil.createMasterThread(c,
(Class<? extends HMaster>) c.getClass(HConstants.MASTER_IMPL, HMaster.class), index);
this.masterClass, index);
this.masterThreads.add(mt);
return mt;
}

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@ -0,0 +1,128 @@
/**
* 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;
import static org.junit.Assert.*;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.zookeeper.MiniZooKeeperCluster;
import org.apache.zookeeper.KeeperException;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(MediumTests.class)
public class TestLocalHBaseCluster {
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
/**
* Check that we can start a local HBase cluster specifying a custom master
* and regionserver class and then cast back to those classes; also that
* the cluster will launch and terminate cleanly. See HBASE-6011.
*/
@Test
public void testLocalHBaseCluster() throws Exception {
Configuration conf = TEST_UTIL.getConfiguration();
MiniZooKeeperCluster zkCluster = TEST_UTIL.startMiniZKCluster();
conf.set(HConstants.ZOOKEEPER_CLIENT_PORT, Integer.toString(zkCluster.getClientPort()));
LocalHBaseCluster cluster = new LocalHBaseCluster(conf, 1, 1, MyHMaster.class,
MyHRegionServer.class);
// Can we cast back to our master class?
try {
((MyHMaster)cluster.getMaster(0)).setZKCluster(zkCluster);
} catch (ClassCastException e) {
fail("Could not cast master to our class");
}
// Can we cast back to our regionserver class?
try {
((MyHRegionServer)cluster.getRegionServer(0)).echo(42);
} catch (ClassCastException e) {
fail("Could not cast regionserver to our class");
}
// Does the cluster start successfully?
try {
cluster.startup();
waitForClusterUp(conf);
} catch (IOException e) {
fail("LocalHBaseCluster did not start successfully");
} finally {
cluster.shutdown();
}
}
private void waitForClusterUp(Configuration conf) throws IOException {
HTable t = new HTable(conf, HConstants.META_TABLE_NAME);
ResultScanner s = t.getScanner(new Scan());
while (s.next() != null) {
continue;
}
s.close();
t.close();
}
/**
* A private master class similar to that used by HMasterCommandLine when
* running in local mode.
*/
public static class MyHMaster extends HMaster {
private MiniZooKeeperCluster zkcluster = null;
public MyHMaster(Configuration conf) throws IOException, KeeperException,
InterruptedException {
super(conf);
}
@Override
public void run() {
super.run();
if (this.zkcluster != null) {
try {
this.zkcluster.shutdown();
} catch (IOException e) {
e.printStackTrace();
}
}
}
void setZKCluster(final MiniZooKeeperCluster zkcluster) {
this.zkcluster = zkcluster;
}
}
/**
* A private regionserver class with a dummy method for testing casts
*/
public static class MyHRegionServer extends HRegionServer {
public MyHRegionServer(Configuration conf) throws IOException,
InterruptedException {
super(conf);
}
public int echo(int val) {
return val;
}
}
}