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https://issues.apache.org/jira/browse/FLINK-13204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiangjie Qin closed FLINK-13204.
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Resolution: Duplicate
I was looking at an outdated code base and the issue has been fixed in release
1.4.3 and 1.5.0.
> The subscribedPartitionStates should be thread safe.
> ----------------------------------------------------
>
> Key: FLINK-13204
> URL: https://issues.apache.org/jira/browse/FLINK-13204
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka
> Reporter: Jiangjie Qin
> Assignee: Jiangjie Qin
> Priority: Major
>
> The \{{subscribedPartitionState}} should be thread safe. This variable may be
> modified by the partition discoverer thread while being read by the main
> thread. So when subscribed partition changes (e.g. partition expansion, new
> topic matching the pattern is created), a
> \{{ConcurrentModificationException}} may be thrown.
> The fix is to use the set from a {{ConcurrentHashMap}} instead of a \{{List}}
> for \{{subscribedPartitionState}}.
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