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https://issues.apache.org/jira/browse/SPARK-20452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15982033#comment-15982033
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Apache Spark commented on SPARK-20452:
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User 'zsxwing' has created a pull request for this issue:
https://github.com/apache/spark/pull/17752
> Cancel a batch Kafka query and rerun the same DataFrame may cause
> ConcurrentModificationException
> -------------------------------------------------------------------------------------------------
>
> Key: SPARK-20452
> URL: https://issues.apache.org/jira/browse/SPARK-20452
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.2.0
> Reporter: Shixiong Zhu
> Assignee: Shixiong Zhu
>
> Cancel a batch Kafka query and rerun the same DataFrame may cause
> ConcurrentModificationException because it may launch two tasks sharing the
> same group id.
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