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https://issues.apache.org/jira/browse/KAFKA-5741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Randall Hauch resolved KAFKA-5741.
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Resolution: Won't Fix
Resolving as WONTFIX, since there is no clear indication that this is a problem.
> Prioritize threads in Connect distributed worker process
> --------------------------------------------------------
>
> Key: KAFKA-5741
> URL: https://issues.apache.org/jira/browse/KAFKA-5741
> Project: Kafka
> Issue Type: Improvement
> Components: KafkaConnect
> Affects Versions: 0.11.0.0
> Reporter: Randall Hauch
> Priority: Critical
>
> Connect's distributed worker process uses the {{DistributedHerder}} to
> perform all administrative operations, including: starting, stopping,
> pausing, resuming, reconfiguring connectors; rebalancing; etc. The
> {{DistributedHerder}} uses a single threaded executor service to do all this
> work and to do it sequentially. If this thread gets preempted for any reason
> (e.g., connector tasks are bogging down the process, DoS, etc.), then the
> herder's membership in the group may be dropped, causing a rebalance.
> This herder thread should be run at a much higher priority than all of the
> other threads in the system.
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