| /** |
| * 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.master; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| import java.io.IOException; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.CoordinatedStateManager; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HRegionInfo; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.MiniHBaseCluster; |
| import org.apache.hadoop.hbase.MiniHBaseCluster.MiniHBaseClusterRegionServer; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.Waiter; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.zookeeper.MetaTableLocator; |
| import org.apache.hadoop.hbase.zookeeper.ZKUtil; |
| import org.apache.zookeeper.KeeperException; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Tests handling of meta-carrying region server failover. |
| */ |
| @Category(MediumTests.class) |
| public class TestMetaShutdownHandler { |
| private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| final static Configuration conf = TEST_UTIL.getConfiguration(); |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| TEST_UTIL.startMiniCluster(1, 3, null, null, MyRegionServer.class); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| /** |
| * This test will test the expire handling of a meta-carrying |
| * region server. |
| * After HBaseMiniCluster is up, we will delete the ephemeral |
| * node of the meta-carrying region server, which will trigger |
| * the expire of this region server on the master. |
| * On the other hand, we will slow down the abort process on |
| * the region server so that it is still up during the master SSH. |
| * We will check that the master SSH is still successfully done. |
| */ |
| @Test (timeout=180000) |
| public void testExpireMetaRegionServer() throws Exception { |
| MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster(); |
| |
| HMaster master = cluster.getMaster(); |
| RegionStates regionStates = master.getAssignmentManager().getRegionStates(); |
| ServerName metaServerName = regionStates.getRegionServerOfRegion( |
| HRegionInfo.FIRST_META_REGIONINFO); |
| if (master.getServerName().equals(metaServerName) || metaServerName == null |
| || !metaServerName.equals(cluster.getServerHoldingMeta())) { |
| // Move meta off master |
| metaServerName = cluster.getLiveRegionServerThreads() |
| .get(0).getRegionServer().getServerName(); |
| master.move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(), |
| Bytes.toBytes(metaServerName.getServerName())); |
| TEST_UTIL.waitUntilNoRegionsInTransition(60000); |
| } |
| RegionState metaState = |
| MetaTableLocator.getMetaRegionState(master.getZooKeeper()); |
| assertEquals("Meta should be not in transition", |
| metaState.getState(), RegionState.State.OPEN); |
| assertNotEquals("Meta should be moved off master", |
| metaServerName, master.getServerName()); |
| |
| // Delete the ephemeral node of the meta-carrying region server. |
| // This is trigger the expire of this region server on the master. |
| String rsEphemeralNodePath = |
| ZKUtil.joinZNode(master.getZooKeeper().rsZNode, metaServerName.toString()); |
| ZKUtil.deleteNode(master.getZooKeeper(), rsEphemeralNodePath); |
| // Wait for SSH to finish |
| final ServerManager serverManager = master.getServerManager(); |
| final ServerName priorMetaServerName = metaServerName; |
| TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() { |
| @Override |
| public boolean evaluate() throws Exception { |
| return !serverManager.isServerOnline(priorMetaServerName) |
| && !serverManager.areDeadServersInProgress(); |
| } |
| }); |
| |
| TEST_UTIL.waitUntilNoRegionsInTransition(60000); |
| // Now, make sure meta is assigned |
| assertTrue("Meta should be assigned", |
| regionStates.isRegionOnline(HRegionInfo.FIRST_META_REGIONINFO)); |
| // Now, make sure meta is registered in zk |
| metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper()); |
| assertEquals("Meta should be not in transition", |
| metaState.getState(), RegionState.State.OPEN); |
| assertEquals("Meta should be assigned", metaState.getServerName(), |
| regionStates.getRegionServerOfRegion(HRegionInfo.FIRST_META_REGIONINFO)); |
| assertNotEquals("Meta should be assigned on a different server", |
| metaState.getServerName(), metaServerName); |
| } |
| |
| public static class MyRegionServer extends MiniHBaseClusterRegionServer { |
| |
| public MyRegionServer(Configuration conf, CoordinatedStateManager cp) |
| throws IOException, KeeperException, |
| InterruptedException { |
| super(conf, cp); |
| } |
| |
| @Override |
| public void abort(String reason, Throwable cause) { |
| // sleep to slow down the region server abort |
| try { |
| Thread.sleep(30*1000); |
| } catch (InterruptedException e) { |
| return; |
| } |
| super.abort(reason, cause); |
| } |
| } |
| } |