kaisun2000 commented on a change in pull request #1035:
URL: https://github.com/apache/helix/pull/1035#discussion_r435104724
##########
File path:
zookeeper-api/src/main/java/org/apache/helix/zookeeper/zkclient/ZkClient.java
##########
@@ -1849,13 +1924,23 @@ private void checkDataSizeLimit(byte[] data) {
}
public void watchForData(final String path) {
- retryUntilConnected(new Callable<Object>() {
- @Override
- public Object call() throws Exception {
- getConnection().exists(path, true);
- return null;
+ watchForData(path, false);
+ }
+
+ private boolean watchForData(final String path, boolean
skipWatchingNodeNotExist) {
+ try {
+ if (skipWatchingNodeNotExist) {
+ Stat stat = new Stat();
Review comment:
Is there a way we can verify all the old existing zookeeper version can
take null as out parameter?
Relying unpublished behavior of API is not a good practices. We can also get
our self into production issue in the future.
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