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https://issues.apache.org/jira/browse/FLINK-13189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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lamber-ken closed FLINK-13189.
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Resolution: Duplicate
Fix Version/s: (was: 1.9.0)
Release Note: duplicate to FLINK-10052
> Fix the impact of zookeeper network disconnect temporarily on flink long
> running jobs
> -------------------------------------------------------------------------------------
>
> Key: FLINK-13189
> URL: https://issues.apache.org/jira/browse/FLINK-13189
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.8.1
> Reporter: lamber-ken
> Assignee: lamber-ken
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> *Issue detail info*
> We deploy flink streaming jobs on hadoop cluster on per-job model and use
> zookeeper as HighAvailabilityService, but we found that flink job will
> restart because of the network was disconnected temporarily between
> jobmanager and zookeeper.
> So we analyze this problem deeply. Flink JobManager use curator's
> `+LeaderLatch+` to maintain the leadership. When network disconncet, the
> `+LeaderLatch+` will change leadership to false directly. We think it's too
> brutally that many flink longrunning jobs will restart because of the network
> shake.
>
> *Fix this issue*
> From curator official website, we found that this issuse was fixed at
> curator-3.x.x, but we can't not just change the flink-curator-version(2.12.0)
> to 3.x.x because of zk-compatibility. Curator-2.x.x support zookeeper-3.4.x
> and zookeeper-3.5.0, curator-3.x.x just compatible with ZooKeeper 3.5.x.
> Based on the above considerations, we update `LeaderLatch` at
> flink-shaded-curator module.
>
> *Other*
> Any suggestions are webcome, thanks
>
> *Useful links*
> [https://curator.apache.org/zk-compatibility.html]
> [https://cwiki.apache.org/confluence/display/CURATOR/Releases]
> [http://curator.apache.org/curator-recipes/leader-latch.html]
>
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