Hao Zhang created HELIX-742:
-------------------------------
Summary: ZkHelixManager should consider session expire when
detecting connection flapping
Key: HELIX-742
URL: https://issues.apache.org/jira/browse/HELIX-742
Project: Apache Helix
Issue Type: Task
Reporter: Hao Zhang
In production we are seeing is because of infinite expiry-connect loop. These
caused live instance change and trigger massive state transitions. As a result,
controller overloads the ZK with thousands of messages, and bring down the
cluster.
Currently, when ZkHelixManager detects connection flapping, it only counts
disconnects, but not session expiry, we need to take session expiry into
consideration as well.
AC:
* follow up this ticket with a plan to consolidate semantics and behavior
* Code complete and test it out
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
