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https://issues.apache.org/jira/browse/FLINK-27195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17521550#comment-17521550
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Qingsheng Ren commented on FLINK-27195:
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Thanks for the confirmation! As you mentioned it's not possible to invoke
{{snapshotState}} twice with a same checkpoint ID, so I think it's not a bug.
> KafkaSourceReader offsetsToCommit should be mutable
> ---------------------------------------------------
>
> Key: FLINK-27195
> URL: https://issues.apache.org/jira/browse/FLINK-27195
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka
> Affects Versions: 1.13.6, 1.14.4
> Reporter: Mason Chen
> Assignee: Mason Chen
> Priority: Major
>
> In the KafkaSourceReader, offsetsToCommit should be mutable. Currently, the
> condition that splits is empty initializes the offsets to commit as an
> immutable empty map. However, it is possible to have splits assigned after a
> checkpoint is taken (e.g. discovered topic partitions). Therefore, offsets to
> commit should be mutable.
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