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https://issues.apache.org/jira/browse/FLINK-21008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yang Wang updated FLINK-21008:
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Summary: Residual HA related Kubernetes ConfigMaps and ZooKeeper nodes when
cluster entrypoint received SIGTERM in shutdown (was:
ClusterEntrypoint#shutDownAsync may not be fully executed)
> Residual HA related Kubernetes ConfigMaps and ZooKeeper nodes when cluster
> entrypoint received SIGTERM in shutdown
> ------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-21008
> URL: https://issues.apache.org/jira/browse/FLINK-21008
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.11.3, 1.12.1
> Reporter: Yang Wang
> Assignee: Yang Wang
> Priority: Critical
> Fix For: 1.13.0
>
>
> Recently, in our internal use case for native K8s integration with K8s HA
> enabled, we found that the leader related ConfigMaps could be residual in
> some corner situations.
> After some investigations, I think it is possibly caused by the inappropriate
> shutdown process.
> In {{ClusterEntrypoint#shutDownAsync}}, we first call the
> {{closeClusterComponent}}, which also includes deregistering the Flink
> application from cluster management(e.g. Yarn, K8s). Then we call the
> {{stopClusterServices}} and {{cleanupDirectories}}. Imagine that the cluster
> management do the deregister very fast, the JobManager process receives
> SIGNAL 15 before or is being executing the {{stopClusterServices}} and
> {{cleanupDirectories}}. The jvm process will directly exit then. So the two
> methods may not be executed.
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