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https://issues.apache.org/jira/browse/KAFKA-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16253414#comment-16253414
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ASF GitHub Bot commented on KAFKA-6164:
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Github user rajinisivaram closed the pull request at:
https://github.com/apache/kafka/pull/4199
> ClientQuotaManager threads prevent shutdown when encountering an error
> loading logs
> -----------------------------------------------------------------------------------
>
> Key: KAFKA-6164
> URL: https://issues.apache.org/jira/browse/KAFKA-6164
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.11.0.0, 1.0.0
> Reporter: Xavier Léauté
> Assignee: Rajini Sivaram
> Fix For: 1.1.0, 1.0.1
>
>
> While diagnosing KAFKA-6163, we noticed that when the broker initiates a
> shutdown sequence in response to an error loading the logs, the process never
> exits. The JVM appears to be waiting indefinitely for several non-deamon
> threads to terminate.
> The threads in question are {{ThrottledRequestReaper-Request}},
> {{ThrottledRequestReaper-Produce}}, and {{ThrottledRequestReaper-Fetch}}, so
> it appears we don't properly shutdown {{ClientQuotaManager}} in this
> situation.
> QuotaManager shutdown is currently handled by KafkaApis, however KafkaApis
> will never be instantiated in the first place if we encounter an error
> loading the logs, so quotamangers are left dangling in that case.
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