bharathv commented on a change in pull request #1945:
URL: https://github.com/apache/hbase/pull/1945#discussion_r443737875
##########
File path:
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKWatcher.java
##########
@@ -595,9 +604,28 @@ private void connectionEvent(WatchedEvent event) {
* data of an existing node and delete or transition that node, utilizing the
* previously read version and data. We want to ensure that the version read
* is up-to-date from when we begin the operation.
+ * <p>
*/
- public void sync(String path) throws KeeperException {
- this.recoverableZooKeeper.sync(path, null, null);
+ public void syncOrTimeout(String path) throws KeeperException {
+ final CountDownLatch latch = new CountDownLatch(1);
+ long startTime = EnvironmentEdgeManager.currentTime();
+ this.recoverableZooKeeper.sync(path, (i, s, o) -> latch.countDown(), null);
Review comment:
I kind of like the fact that the code is a bit concise (since there is
no real logic in this lambda in this case) but I get the concern about
readability. I don't have a strong preference though, I can switch it to an
inline class.
##########
File path:
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKWatcher.java
##########
@@ -595,9 +604,28 @@ private void connectionEvent(WatchedEvent event) {
* data of an existing node and delete or transition that node, utilizing the
* previously read version and data. We want to ensure that the version read
* is up-to-date from when we begin the operation.
+ * <p>
*/
- public void sync(String path) throws KeeperException {
- this.recoverableZooKeeper.sync(path, null, null);
+ public void syncOrTimeout(String path) throws KeeperException {
+ final CountDownLatch latch = new CountDownLatch(1);
+ long startTime = EnvironmentEdgeManager.currentTime();
+ this.recoverableZooKeeper.sync(path, (i, s, o) -> latch.countDown(), null);
+ try {
+ if (!latch.await(zkSyncTimeout, TimeUnit.MILLISECONDS)) {
+ LOG.error("sync() operation to ZK timed out. Configured timeout: {}ms.
This usually points "
Review comment:
Any particular reason this has to be WARN? This can potentially be a
correctness issue at this point and hence I chose the higher log level.
##########
File path:
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKWatcher.java
##########
@@ -595,9 +604,28 @@ private void connectionEvent(WatchedEvent event) {
* data of an existing node and delete or transition that node, utilizing the
* previously read version and data. We want to ensure that the version read
* is up-to-date from when we begin the operation.
+ * <p>
*/
- public void sync(String path) throws KeeperException {
- this.recoverableZooKeeper.sync(path, null, null);
+ public void syncOrTimeout(String path) throws KeeperException {
+ final CountDownLatch latch = new CountDownLatch(1);
+ long startTime = EnvironmentEdgeManager.currentTime();
+ this.recoverableZooKeeper.sync(path, (i, s, o) -> latch.countDown(), null);
Review comment:
ok will do.
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