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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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* 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.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.List;
import java.util.NavigableSet;
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.LargeTests;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread;
import org.apache.hadoop.hbase.zookeeper.ZKAssign;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.zookeeper.KeeperException;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(LargeTests.class)
public class TestMasterRestartAfterDisablingTable {
private static final Log LOG = LogFactory.getLog(TestMasterRestartAfterDisablingTable.class);
@Test
public void testForCheckingIfEnableAndDisableWorksFineAfterSwitch()
throws Exception {
final int NUM_MASTERS = 2;
final int NUM_RS = 1;
final int NUM_REGIONS_TO_CREATE = 4;
// Start the cluster
log("Starting cluster");
Configuration conf = HBaseConfiguration.create();
HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(conf);
TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
log("Waiting for active/ready master");
cluster.waitForActiveAndReadyMaster();
ZooKeeperWatcher zkw = new ZooKeeperWatcher(conf, "testmasterRestart", null);
HMaster master = cluster.getMaster();
// Create a table with regions
TableName table = TableName.valueOf("tableRestart");
byte[] family = Bytes.toBytes("family");
log("Creating table with " + NUM_REGIONS_TO_CREATE + " regions");
HTable ht = TEST_UTIL.createTable(table, family);
int numRegions = TEST_UTIL.createMultiRegions(conf, ht, family,
NUM_REGIONS_TO_CREATE);
numRegions += 1; // catalogs
log("Waiting for no more RIT\n");
blockUntilNoRIT(zkw, master);
log("Disabling table\n");
TEST_UTIL.getHBaseAdmin().disableTable(table);
NavigableSet<String> regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
assertEquals(
"The number of regions for the table tableRestart should be 0 and only"
+ "the catalog and namespace tables should be present.", 2, regions.size());
List<MasterThread> masterThreads = cluster.getMasterThreads();
MasterThread activeMaster = null;
if (masterThreads.get(0).getMaster().isActiveMaster()) {
activeMaster = masterThreads.get(0);
} else {
activeMaster = masterThreads.get(1);
}
activeMaster.getMaster().stop(
"stopping the active master so that the backup can become active");
cluster.hbaseCluster.waitOnMaster(activeMaster);
cluster.waitForActiveAndReadyMaster();
assertTrue("The table should not be in enabled state", cluster.getMaster()
.getAssignmentManager().getTableStateManager().isTableState(
TableName.valueOf("tableRestart"), ZooKeeperProtos.Table.State.DISABLED,
ZooKeeperProtos.Table.State.DISABLING));
log("Enabling table\n");
// Need a new Admin, the previous one is on the old master
Admin admin = new HBaseAdmin(TEST_UTIL.getConfiguration());
admin.enableTable(table);
admin.close();
log("Waiting for no more RIT\n");
blockUntilNoRIT(zkw, master);
log("Verifying there are " + numRegions + " assigned on cluster\n");
regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
assertEquals("The assigned regions were not onlined after master"
+ " switch except for the catalog and namespace tables.",
6, regions.size());
assertTrue("The table should be in enabled state", cluster.getMaster()
.getAssignmentManager().getTableStateManager()
.isTableState(TableName.valueOf("tableRestart"), ZooKeeperProtos.Table.State.ENABLED));
ht.close();
TEST_UTIL.shutdownMiniCluster();
}
private void log(String msg) {
LOG.debug("\n\nTRR: " + msg + "\n");
}
private void blockUntilNoRIT(ZooKeeperWatcher zkw, HMaster master)
throws KeeperException, InterruptedException {
ZKAssign.blockUntilNoRIT(zkw);
master.assignmentManager.waitUntilNoRegionsInTransition(60000);
}
}