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https://issues.apache.org/jira/browse/KAFKA-3855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15384388#comment-15384388
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ASF GitHub Bot commented on KAFKA-3855:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/1633
> Guard race conditions in TopologyBuilder
> ----------------------------------------
>
> Key: KAFKA-3855
> URL: https://issues.apache.org/jira/browse/KAFKA-3855
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Damian Guy
> Labels: architecture
>
> The user specified {{TopologyBuilder}} is shared among all stream threads to
> build the processor topology instance, one for each thread. It public
> functions that can be accessed by the threads is not synchronized, and we
> need to double check if it could cause race conditions, and if yes guard
> against these concurrent access.
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