i3wangyi commented on a change in pull request #363: Fix the race condition
while Helix refresh cluster status cache.
URL: https://github.com/apache/helix/pull/363#discussion_r308443459
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File path:
helix-core/src/main/java/org/apache/helix/controller/dataproviders/BaseControllerDataProvider.java
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@@ -597,7 +611,7 @@ public ClusterConstraints
getConstraint(ClusterConstraints.ConstraintType type)
* Notify the cache that some part of the cluster data has been changed.
*/
public void notifyDataChange(HelixConstants.ChangeType changeType) {
Review comment:
Thanks for using AtomicBoolean, the purpose is much clearer now. But can you
add more comment on why we need a lock-free condition at this case, for better
reference purpose in the future
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