/**
* 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.qjournal;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_FAILOVER_PROXY_PROVIDER_KEY_PREFIX;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HA_NAMENODES_KEY_PREFIX;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY;
import java.io.IOException;
import java.net.URI;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.MiniDFSNNTopology;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider;
public class MiniQJMHACluster {
private MiniDFSCluster cluster;
private MiniJournalCluster journalCluster;
private final Configuration conf;
private static String NAMESERVICE = "ns1";
private static final String NN1 = "nn1";
private static final String NN2 = "nn2";
private static final int NN1_IPC_PORT = 10000;
private static final int NN1_INFO_PORT = 10001;
private static final int NN2_IPC_PORT = 10002;
private static final int NN2_INFO_PORT = 10003;
public static class Builder {
private final Configuration conf;
private final MiniDFSCluster.Builder dfsBuilder;
public Builder(Configuration conf) {
this.conf = conf;
this.dfsBuilder = new MiniDFSCluster.Builder(conf);
}
public MiniDFSCluster.Builder getDfsBuilder() {
return dfsBuilder;
}
public MiniQJMHACluster build() throws IOException {
return new MiniQJMHACluster(this);
}
}
public static MiniDFSNNTopology createDefaultTopology() {
return new MiniDFSNNTopology()
.addNameservice(new MiniDFSNNTopology.NSConf(NAMESERVICE).addNN(
new MiniDFSNNTopology.NNConf("nn1").setIpcPort(NN1_IPC_PORT)
.setHttpPort(NN1_INFO_PORT)).addNN(
new MiniDFSNNTopology.NNConf("nn2").setIpcPort(NN2_IPC_PORT)
.setHttpPort(NN2_INFO_PORT)));
}
private MiniQJMHACluster(Builder builder) throws IOException {
this.conf = builder.conf;
// start 3 journal nodes
journalCluster = new MiniJournalCluster.Builder(conf).format(true)
.build();
URI journalURI = journalCluster.getQuorumJournalURI(NAMESERVICE);
// start cluster with 2 NameNodes
MiniDFSNNTopology topology = createDefaultTopology();
initHAConf(journalURI, builder.conf);
// First start up the NNs just to format the namespace. The MinIDFSCluster
// has no way to just format the NameNodes without also starting them.
cluster = builder.dfsBuilder.nnTopology(topology)
.manageNameDfsSharedDirs(false).build();
cluster.waitActive();
cluster.shutdown();
// initialize the journal nodes
Configuration confNN0 = cluster.getConfiguration(0);
NameNode.initializeSharedEdits(confNN0, true);
// restart the cluster
cluster.restartNameNodes();
}
private Configuration initHAConf(URI journalURI, Configuration conf) {
conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY,
journalURI.toString());
String address1 = "127.0.0.1:" + NN1_IPC_PORT;
String address2 = "127.0.0.1:" + NN2_IPC_PORT;
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY,
NAMESERVICE, NN1), address1);
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY,
NAMESERVICE, NN2), address2);
conf.set(DFSConfigKeys.DFS_NAMESERVICES, NAMESERVICE);
conf.set(DFSUtil.addKeySuffixes(DFS_HA_NAMENODES_KEY_PREFIX, NAMESERVICE),
NN1 + "," + NN2);
conf.set(DFS_CLIENT_FAILOVER_PROXY_PROVIDER_KEY_PREFIX + "." + NAMESERVICE,
ConfiguredFailoverProxyProvider.class.getName());
conf.set("fs.defaultFS", "hdfs://" + NAMESERVICE);
return conf;
}
public MiniDFSCluster getDfsCluster() {
return cluster;
}
public MiniJournalCluster getJournalCluster() {
return journalCluster;
}
public void shutdown() throws IOException {
cluster.shutdown();
journalCluster.shutdown();
}
}