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https://issues.apache.org/jira/browse/FLINK-5486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16649305#comment-16649305
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ASF GitHub Bot commented on FLINK-5486:
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GJL commented on issue #4356: [FLINK-5486] Fix lacking of synchronization in
BucketingSink#handleRe…
URL: https://github.com/apache/flink/pull/4356#issuecomment-429608448
I am closing this PR because
[FLINK-5486](https://issues.apache.org/jira/browse/FLINK-5486?focusedCommentId=16649304&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16649304)
got closed. Please reopen the ticket/PR if you disagree.
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> Lack of synchronization in BucketingSink#handleRestoredBucketState()
> --------------------------------------------------------------------
>
> Key: FLINK-5486
> URL: https://issues.apache.org/jira/browse/FLINK-5486
> Project: Flink
> Issue Type: Bug
> Components: Streaming Connectors
> Affects Versions: 1.5.0, 1.4.2, 1.6.0
> Reporter: Ted Yu
> Assignee: zhangminglei
> Priority: Major
>
> Here is related code:
> {code}
>
> handlePendingFilesForPreviousCheckpoints(bucketState.pendingFilesPerCheckpoint);
> synchronized (bucketState.pendingFilesPerCheckpoint) {
> bucketState.pendingFilesPerCheckpoint.clear();
> }
> {code}
> The handlePendingFilesForPreviousCheckpoints() call should be enclosed inside
> the synchronization block. Otherwise during the processing of
> handlePendingFilesForPreviousCheckpoints(), some entries of the map may be
> cleared.
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