本文整理汇总了Java中org.apache.zookeeper.ZooKeeper.getSessionPasswd方法的典型用法代码示例。如果您正苦于以下问题：Java ZooKeeper.getSessionPasswd方法的具体用法？Java ZooKeeper.getSessionPasswd怎么用？Java ZooKeeper.getSessionPasswd使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.zookeeper.ZooKeeper的用法示例。
在下文中一共展示了ZooKeeper.getSessionPasswd方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: expireSession
import org.apache.zookeeper.ZooKeeper; //导入方法依赖的package包/类
/**
* Expire a ZooKeeper session as recommended in ZooKeeper documentation
* http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4
* There are issues when doing this:
* [1] http://www.mail-archive.com/[email protected]/msg01942.html
* [2] https://issues.apache.org/jira/browse/ZOOKEEPER-1105
*
* @param nodeZK - the ZK watcher to expire
* @param checkStatus - true to check if we can create an HTable with the
* current configuration.
*/
public void expireSession(ZooKeeperWatcher nodeZK, boolean checkStatus)
throws Exception {
Configuration c = new Configuration(this.conf);
String quorumServers = ZKConfig.getZKQuorumServersString(c);
ZooKeeper zk = nodeZK.getRecoverableZooKeeper().getZooKeeper();
byte[] password = zk.getSessionPasswd();
long sessionID = zk.getSessionId();
// Expiry seems to be asynchronous (see comment from P. Hunt in [1]),
// so we create a first watcher to be sure that the
// event was sent. We expect that if our watcher receives the event
// other watchers on the same machine will get is as well.
// When we ask to close the connection, ZK does not close it before
// we receive all the events, so don't have to capture the event, just
// closing the connection should be enough.
ZooKeeper monitor = new ZooKeeper(quorumServers,
1000, new org.apache.zookeeper.Watcher(){
@Override
public void process(WatchedEvent watchedEvent) {
LOG.info("Monitor ZKW received event="+watchedEvent);
}
} , sessionID, password);
// Making it expire
ZooKeeper newZK = new ZooKeeper(quorumServers,
1000, EmptyWatcher.instance, sessionID, password);
//ensure that we have connection to the server before closing down, otherwise
//the close session event will be eaten out before we start CONNECTING state
long start = System.currentTimeMillis();
while (newZK.getState() != States.CONNECTED
&& System.currentTimeMillis() - start < 1000) {
Thread.sleep(1);
}
newZK.close();
LOG.info("ZK Closed Session 0x" + Long.toHexString(sessionID));
// Now closing & waiting to be sure that the clients get it.
monitor.close();
if (checkStatus) {
new HTable(new Configuration(conf), TableName.META_TABLE_NAME).close();
}
}