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https://issues.apache.org/jira/browse/FLINK-11749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16780456#comment-16780456
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Till Rohrmann commented on FLINK-11749:
---------------------------------------
If you are ok, then I would change this issue into changing all
{{LeaderRetrievalServices}} only being startable once. This would surface these
kind of problems in the future. However, we should only do this after
FLINK-11719 has been fixed.
> Returns the stored leadership info on ZooKeeperLeaderRetrievalService started
> -----------------------------------------------------------------------------
>
> Key: FLINK-11749
> URL: https://issues.apache.org/jira/browse/FLINK-11749
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.9.0
> Reporter: TisonKun
> Assignee: TisonKun
> Priority: Major
> Fix For: 1.9.0
>
>
> Currently, such as in {{JobMaster}}, if we stop a
> {{ZooKeeperLeaderRetrievalService}} and restart it, because the cached node
> data isn't change, we have to manually flush it.
> I propose on {{ZooKeeperLeaderRetrievalService}} stated, get {{ChildData}}
> from {{NodeCache}} and if the data isn't null, generate
> LeadershipInfo(Address and UUID) and notify the listener.
> cc [~till.rohrmann]
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