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https://issues.apache.org/jira/browse/KAFKA-17210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhinav Dixit resolved KAFKA-17210.
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Fix Version/s: 4.0.0
Resolution: Fixed
> Broker fixes for smooth concurrent fetches on share partition
> -------------------------------------------------------------
>
> Key: KAFKA-17210
> URL: https://issues.apache.org/jira/browse/KAFKA-17210
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Abhinav Dixit
> Assignee: Abhinav Dixit
> Priority: Major
> Fix For: 4.0.0
>
>
> Identified a couple of reliability issues with broker code for share groups -
> # Broker seems to get stuck at times when using multiple share consumers due
> to a corner case where the second last fetch request did not contain any
> topic partition to fetch, because of which the broker could never complete
> the last request. This results in a share fetch request getting stuck.
> # Since persister would not perform any business logic around sending state
> batches for a share partition, there could be scenarios where it sends state
> batches with no AVAILABLE records. This could cause a breach on the limit of
> in-flight messages we have configured, and hence broker would never be able
> to complete the share fetch requests.
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