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https://issues.apache.org/jira/browse/KAFKA-20938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax reassigned KAFKA-20938:
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Assignee: Varun Velamuri (was: Sean Quah)
> Previous JoinGroup/SyncGroup requests left dangling when retried
> ----------------------------------------------------------------
>
> Key: KAFKA-20938
> URL: https://issues.apache.org/jira/browse/KAFKA-20938
> Project: Kafka
> Issue Type: Bug
> Components: group-coordinator
> Affects Versions: 4.0.0
> Reporter: Sean Quah
> Assignee: Varun Velamuri
> Priority: Major
>
> The group coordinator can only keep track of a single JoinGroup and SyncGroup
> request future per member. When a member retries a blocking JoinGroup or
> SyncGroup request, the previous future is discarded and replaced, leaving the
> previous request unanswered.
> This can be a problem when there are proxies in between the client and broker
> which wait for the response regardless of whether clients have disconnected.
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