org.apache.hadoop.hive.ql.util.ZooKeeperHiveHelper Maven / Gradle / Ivy
/**
* 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.hive.ql.util;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.zookeeper.Watcher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ZooKeeperHiveHelper {
public static final Logger LOG = LoggerFactory.getLogger(ZooKeeperHiveHelper.class.getName());
public static final String ZOOKEEPER_PATH_SEPARATOR = "/";
/**
* Get the ensemble server addresses from the configuration. The format is: host1:port,
* host2:port..
*
* @param conf
**/
public static String getQuorumServers(HiveConf conf) {
String[] hosts = conf.getVar(HiveConf.ConfVars.HIVE_ZOOKEEPER_QUORUM).split(",");
String port = conf.getVar(HiveConf.ConfVars.HIVE_ZOOKEEPER_CLIENT_PORT);
StringBuilder quorum = new StringBuilder();
for (int i = 0; i < hosts.length; i++) {
quorum.append(hosts[i].trim());
if (!hosts[i].contains(":")) {
// if the hostname doesn't contain a port, add the configured port to hostname
quorum.append(":");
quorum.append(port);
}
if (i != hosts.length - 1)
quorum.append(",");
}
return quorum.toString();
}
/**
* A no-op watcher class
*/
public static class DummyWatcher implements Watcher {
@Override
public void process(org.apache.zookeeper.WatchedEvent event) {
}
}
}