/**
* 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.hdfs.server.namenode;
import java.net.BindException;
import java.util.Random;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_PERIOD_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.MiniDFSNNTopology;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem.NameNodeEditLogRoller;
import org.apache.hadoop.hdfs.server.namenode.ha.HATestUtil;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.google.common.base.Supplier;
public class TestEditLogAutoroll {
private Configuration conf;
private MiniDFSCluster cluster;
private NameNode nn0;
private FileSystem fs;
private FSEditLog editLog;
private final Random random = new Random();
private static final Log LOG = LogFactory.getLog(TestEditLog.class);
@Before
public void setUp() throws Exception {
conf = new Configuration();
// Stall the standby checkpointer in two ways
conf.setLong(DFS_NAMENODE_CHECKPOINT_PERIOD_KEY, Long.MAX_VALUE);
conf.setLong(DFS_NAMENODE_CHECKPOINT_TXNS_KEY, 20);
// Make it autoroll after 10 edits
conf.setFloat(DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD, 0.5f);
conf.setInt(DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS, 100);
int retryCount = 0;
while (true) {
try {
int basePort = 10060 + random.nextInt(100) * 2;
MiniDFSNNTopology topology = new MiniDFSNNTopology()
.addNameservice(new MiniDFSNNTopology.NSConf("ns1")
.addNN(new MiniDFSNNTopology.NNConf("nn1").setHttpPort(basePort))
.addNN(new MiniDFSNNTopology.NNConf("nn2").setHttpPort(basePort + 1)));
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(topology)
.numDataNodes(0)
.build();
cluster.waitActive();
nn0 = cluster.getNameNode(0);
fs = HATestUtil.configureFailoverFs(cluster, conf);
cluster.transitionToActive(0);
fs = cluster.getFileSystem(0);
editLog = nn0.getNamesystem().getEditLog();
++retryCount;
break;
} catch (BindException e) {
LOG.info("Set up MiniDFSCluster failed due to port conflicts, retry "
+ retryCount + " times");
}
}
}
@After
public void tearDown() throws Exception {
if (fs != null) {
fs.close();
}
if (cluster != null) {
cluster.shutdown();
}
}
@Test(timeout=60000)
public void testEditLogAutoroll() throws Exception {
// Make some edits
final long startTxId = editLog.getCurSegmentTxId();
for (int i=0; i<11; i++) {
fs.mkdirs(new Path("testEditLogAutoroll-" + i));
}
// Wait for the NN to autoroll
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
return editLog.getCurSegmentTxId() > startTxId;
}
}, 1000, 5000);
// Transition to standby and make sure the roller stopped
nn0.transitionToStandby();
GenericTestUtils.assertNoThreadsMatching(
".*" + NameNodeEditLogRoller.class.getSimpleName() + ".*");
}
}