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Posted to commits@hbase.apache.org by je...@apache.org on 2015/06/09 20:49:20 UTC
hbase git commit: HBASE-13845 Expire of one region server carrying
meta can bring down the master: test case
Repository: hbase
Updated Branches:
refs/heads/master 6cc42c8cd -> 14fe23254
HBASE-13845 Expire of one region server carrying meta can bring down the master: test case
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/14fe2325
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/14fe2325
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/14fe2325
Branch: refs/heads/master
Commit: 14fe23254a78c52bdaef0da819268c8b405059cb
Parents: 6cc42c8
Author: Jerry He <je...@apache.org>
Authored: Tue Jun 9 11:46:58 2015 -0700
Committer: Jerry He <je...@apache.org>
Committed: Tue Jun 9 11:46:58 2015 -0700
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.../hbase/master/TestMetaShutdownHandler.java | 143 +++++++++++++++++++
1 file changed, 143 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hbase/blob/14fe2325/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMetaShutdownHandler.java
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diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMetaShutdownHandler.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMetaShutdownHandler.java
new file mode 100644
index 0000000..619d367
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMetaShutdownHandler.java
@@ -0,0 +1,143 @@
+/**
+ * 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);
+ }
+ }
+}