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https://issues.apache.org/jira/browse/KAFKA-10271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17157999#comment-17157999
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Dima R commented on KAFKA-10271:
--------------------------------
After profiling under load it looks like problem in excessive loops over
calling internalTopologyBuilder.topicGroups()
which is synchronized.
!9020.png!
> Performance degradation while fetching a key from a single partition
> --------------------------------------------------------------------
>
> Key: KAFKA-10271
> URL: https://issues.apache.org/jira/browse/KAFKA-10271
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.5.0, 2.6.0, 2.5.1
> Reporter: Dima R
> Assignee: Dima R
> Priority: Major
> Labels: KAFKA-10030, KAFKA-9445, KIP-562
> Fix For: 2.5.1, 2.6.1
>
> Attachments: 9020.png
>
>
> This is follow-up bug for KAFKA-10030
> WrappingStoreProvider does not take into account withPartition parameter and
> always return all existing stores, thus causing significant performance
> degradation to the caller, in case state store has many partitions.
>
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