Sean Quah created KAFKA-20938:
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Summary: 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: Sean Quah
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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