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https://issues.apache.org/jira/browse/FLINK-3651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15210309#comment-15210309
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ASF GitHub Bot commented on FLINK-3651:
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Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/1830#issuecomment-200863307
Yes, what @rmetzger said is correct. Without the fix and the increase of
parallelism it will be a flaky test that still succeeds sometimes.
> Fix faulty RollingSink Restore
> ------------------------------
>
> Key: FLINK-3651
> URL: https://issues.apache.org/jira/browse/FLINK-3651
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
> The RollingSink restore logic has a bug where the sink for subtask index 1
> also removes files for subtask index 11 because the regex that checks for the
> file name also matches that one. Adding the suffix to the regex should solve
> the problem because then the regex for 1 will only match files for subtask
> index 1.
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