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https://issues.apache.org/jira/browse/ZOOKEEPER-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17434767#comment-17434767
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Sagar Satyawan Parab commented on ZOOKEEPER-4400:
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Hi, Any update on this issue?
> Zookeeper not getting Graceful Termination
> ------------------------------------------
>
> Key: ZOOKEEPER-4400
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4400
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.6.2
> Environment: Kuberentes v1.20
> Reporter: Sagar Satyawan Parab
> Priority: Major
>
> We have three(3) node zookeeper cluster running as a pod on Kubernetes
> cluster,
> Zookeeper version is 3.6.2,we are implementing graceful termination in our
> zookeeper development through
> *terminationGracePeriodSeconds:*
> *refer link:
> [https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/*]
> When we delete pods then kuberentes sends SIGTERM signal and wait for
> graceful termination(*terminationGracePeriodSeconds=30)* time before forceful
> deletion, then service should catch this signal(sigterm) and should shutdown
> gracefully within 30 seconds.
> But zookeeper doesn't seems to be handling this sigterm and not
> terminating gracefully terminated without graceful.
> Trying deleting the pod
>
> {code:java}
> kubectl delete pod/test-zk-0 -n test
> {code}
>
> {code:java}
> kubectl log -f pod/test-zk-0 -n test
> 2021-10-22T07:54:57.655+0000 [myid:] - INFO
> [QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2181)(secure=[0:0:0:0:0:0:0:0]:2281):QuorumPeer@868]
> - Peer state changed: following - synchronization
> 2021-10-22T07:54:57.661+0000 [myid:] - INFO
> [QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2181)(secure=[0:0:0:0:0:0:0:0]:2281):CommitProcessor@476]
> - Configuring CommitProcessor with readBatchSize -1 commitBatchSize 1
> 2021-10-22T07:54:57.662+0000 [myid:] - INFO
> [QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2181)(secure=[0:0:0:0:0:0:0:0]:2281):CommitProcessor@438]
> - Configuring CommitProcessor with 2 worker threads.
> 2021-10-22T07:54:57.666+0000 [myid:] - INFO
> [QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2181)(secure=[0:0:0:0:0:0:0:0]:2281):RequestThrottler@74]
> - zookeeper.request_throttler.shutdownTimeout = 10000
> 2021-10-22T07:54:57.680+0000 [myid:] - INFO
> [QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2181)(secure=[0:0:0:0:0:0:0:0]:2281):QuorumPeer@863]
> - Peer state changed: following - broadcast{code}
> zookeeper not terminating gracefully when we delete the pod not logs of
> zookeeper shutdown coming and immediately pod get deleted.
>
> Expectation: Zookeeper must shutdown gracefully when we delete the pod and
> its evidence should be coming in logs
>
>
>
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