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https://issues.apache.org/jira/browse/KAFKA-4537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15753018#comment-15753018
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ASF GitHub Bot commented on KAFKA-4537:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/2254
> StreamPartitionAssignor incorrectly adds standby partitions to the
> partitionsByHostState map
> --------------------------------------------------------------------------------------------
>
> Key: KAFKA-4537
> URL: https://issues.apache.org/jira/browse/KAFKA-4537
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.2.0
> Reporter: Damian Guy
> Assignee: Damian Guy
> Fix For: 0.10.2.0
>
>
> If a KafkaStreams app is using Standby Tasks then StreamPartitionAssignor
> will add the standby partitions to the partitionsByHostState map for each
> host. This is incorrect as the partitionHostState map is used to resolve
> which host is hosting a particular store for a key.
> The result is that doing metadata lookups for interactive queries can return
> an incorrect host
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