本文整理了Java中org.apache.hadoop.hbase.zookeeper.ZKUtil.setWatchIfNodeExists()方法的一些代码示例，展示了ZKUtil.setWatchIfNodeExists()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZKUtil.setWatchIfNodeExists()方法的具体详情如下：
包路径：org.apache.hadoop.hbase.zookeeper.ZKUtil
类名称：ZKUtil
方法名：setWatchIfNodeExists

ZKUtil.setWatchIfNodeExists介绍

[英]Watch the specified znode, but only if exists. Useful when watching for deletions. Uses .getData() (and handles NoNodeException) instead of .exists() to accomplish this, as .getData() will only set a watch if the znode exists.
[中]查看指定的znode，但仅限于存在时。在监视删除时非常有用。使用。getData（）（并处理NoNodeException）而不是。exists（）来实现这一点，如。getData（）仅在znode存在时设置手表。

代码示例

代码示例来源：origin: apache/hbase

@Override
public void nodeDataChanged(String path) {
 if (!path.equals(pathToWatch)) {
  return;
 }
 try {
  if (!(ZKUtil.setWatchIfNodeExists(watcher, pathToWatch))) {
   deletedLatch.countDown();
  }
 } catch (KeeperException ex) {
  exception = ex;
  deletedLatch.countDown();
  LOG.error("Error when re-setting the watch on " + pathToWatch, ex);
 }
}

代码示例来源：origin: org.apache.hbase/hbase-zookeeper

@Override
public void nodeDataChanged(String path) {
 if (!path.equals(pathToWatch)) {
  return;
 }
 try {
  if (!(ZKUtil.setWatchIfNodeExists(watcher, pathToWatch))) {
   deletedLatch.countDown();
  }
 } catch (KeeperException ex) {
  exception = ex;
  deletedLatch.countDown();
  LOG.error("Error when re-setting the watch on " + pathToWatch, ex);
 }
}

代码示例来源：origin: harbby/presto-connectors

@Override
public void nodeDataChanged(String path) {
 if (!path.equals(pathToWatch)) {
  return;
 }
 try {
  if (!(ZKUtil.setWatchIfNodeExists(watcher, pathToWatch))) {
   deletedLatch.countDown();
  }
 } catch (KeeperException ex) {
  exception = ex;
  deletedLatch.countDown();
  LOG.error("Error when re-setting the watch on " + pathToWatch, ex);
 }
}

代码示例来源：origin: harbby/presto-connectors

zkWatcher.registerListener(deletionListener);
try {
 if (ZKUtil.setWatchIfNodeExists(zkWatcher, zkPathToWatch)) {