virajjasani commented on a change in pull request #1546: HBASE-24211: Create
table is slow in large cluster when AccessController is enabled.
URL: https://github.com/apache/hbase/pull/1546#discussion_r410710605
##########
File path:
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java
##########
@@ -741,6 +741,10 @@ public static int getNumberOfChildren(ZKWatcher zkw,
String znode)
if (nodes != null) {
List<NodeAndData> newNodes = new ArrayList<>();
for (String node : nodes) {
+ if (Thread.interrupted()) {
+ // Partial data should not be processed. Cancel processing by
sending empty list.
Review comment:
@arshadmohammad have you seen this issue being the cause for create table
being slow or this is an improvement over preempting any existing
nodeChildrenChanged event processing (done in ZKPermissionWatcher)?
Basically, when thread is interrupted and we return empty list, what could
be the catch? Some incorrect decision could be taken by HMaster?
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