/**
* 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.regionserver.wal;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.namenode.LeaseManager;
import org.apache.log4j.Level;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Tests for conditions that should trigger RegionServer aborts when
* rolling the current HLog fails.
*/
@Category(MediumTests.class)
public class TestLogRollAbort {
private static final Log LOG = LogFactory.getLog(TestLogRolling.class);
private static MiniDFSCluster dfsCluster;
private static HBaseAdmin admin;
private static MiniHBaseCluster cluster;
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
// verbose logging on classes that are touched in these tests
{
((Log4JLogger)DataNode.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger)LeaseManager.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger)LogFactory.getLog("org.apache.hadoop.hdfs.server.namenode.FSNamesystem"))
.getLogger().setLevel(Level.ALL);
((Log4JLogger)DFSClient.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger)HRegionServer.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger)HRegion.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger)HLog.LOG).getLogger().setLevel(Level.ALL);
}
// Need to override this setup so we can edit the config before it gets sent
// to the HDFS & HBase cluster startup.
@BeforeClass
public static void setUpBeforeClass() throws Exception {
// Tweak default timeout values down for faster recovery
TEST_UTIL.getConfiguration().setInt(
"hbase.regionserver.logroll.errors.tolerated", 2);
TEST_UTIL.getConfiguration().setInt("ipc.ping.interval", 10 * 1000);
TEST_UTIL.getConfiguration().setInt("ipc.socket.timeout", 10 * 1000);
TEST_UTIL.getConfiguration().setInt("hbase.rpc.timeout", 10 * 1000);
// Increase the amount of time between client retries
TEST_UTIL.getConfiguration().setLong("hbase.client.pause", 5 * 1000);
// make sure log.hflush() calls syncFs() to open a pipeline
TEST_UTIL.getConfiguration().setBoolean("dfs.support.append", true);
// lower the namenode & datanode heartbeat so the namenode
// quickly detects datanode failures
TEST_UTIL.getConfiguration().setInt("heartbeat.recheck.interval", 5000);
TEST_UTIL.getConfiguration().setInt("dfs.heartbeat.interval", 1);
// the namenode might still try to choose the recently-dead datanode
// for a pipeline, so try to a new pipeline multiple times
TEST_UTIL.getConfiguration().setInt("dfs.client.block.write.retries", 10);
// set periodic sync to 2 min so it doesn't run during test
TEST_UTIL.getConfiguration().setInt("hbase.regionserver.optionallogflushinterval",
120 * 1000);
}
@Before
public void setUp() throws Exception {
TEST_UTIL.startMiniCluster(2);
cluster = TEST_UTIL.getHBaseCluster();
dfsCluster = TEST_UTIL.getDFSCluster();
admin = TEST_UTIL.getHBaseAdmin();
// disable region rebalancing (interferes with log watching)
cluster.getMaster().balanceSwitch(false);
}
@After
public void tearDown() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
/**
* Tests that RegionServer aborts if we hit an error closing the WAL when
* there are unsynced WAL edits. See HBASE-4282.
*/
@Test
public void testRSAbortWithUnflushedEdits() throws Exception {
LOG.info("Starting testRSAbortWithUnflushedEdits()");
// When the META table can be opened, the region servers are running
new HTable(TEST_UTIL.getConfiguration(),
HConstants.META_TABLE_NAME).close();
// Create the test table and open it
String tableName = this.getClass().getSimpleName();
HTableDescriptor desc = new HTableDescriptor(tableName);
desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
desc.setDeferredLogFlush(true);
admin.createTable(desc);
HTable table = new HTable(TEST_UTIL.getConfiguration(), tableName);
HRegionServer server = TEST_UTIL.getRSForFirstRegionInTable(Bytes.toBytes(tableName));
HLog log = server.getWAL();
assertTrue("Need HDFS-826 for this test", ((FSHLog) log).canGetCurReplicas());
// don't run this test without append support (HDFS-200 & HDFS-142)
assertTrue("Need append support for this test",
FSUtils.isAppendSupported(TEST_UTIL.getConfiguration()));
Put p = new Put(Bytes.toBytes("row2001"));
p.add(HConstants.CATALOG_FAMILY, Bytes.toBytes("col"), Bytes.toBytes(2001));
table.put(p);
log.sync();
p = new Put(Bytes.toBytes("row2002"));
p.add(HConstants.CATALOG_FAMILY, Bytes.toBytes("col"), Bytes.toBytes(2002));
table.put(p);
dfsCluster.restartDataNodes();
LOG.info("Restarted datanodes");
assertTrue("Should have an outstanding WAL edit", ((FSHLog) log).hasDeferredEntries());
try {
log.rollWriter(true);
fail("Log roll should have triggered FailedLogCloseException");
} catch (FailedLogCloseException flce) {
assertTrue("Should have deferred flush log edits outstanding",
((FSHLog) log).hasDeferredEntries());
}
}
}