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https://issues.apache.org/jira/browse/FLINK-11318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16743811#comment-16743811
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Edward Rojas commented on FLINK-11318:
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Yes, that's what I had in mind.
Thanks for look into this anyway.
> [Regression] StreamingFileSink can overwrite existing files
> -----------------------------------------------------------
>
> Key: FLINK-11318
> URL: https://issues.apache.org/jira/browse/FLINK-11318
> Project: Flink
> Issue Type: Bug
> Components: filesystem-connector
> Affects Versions: 1.6.3, 1.7.1
> Reporter: Edward Rojas
> Assignee: Kostas Kloudas
> Priority: Major
>
> StreamingFileSink does not validate if a file with the same name of the new
> part file already exists and this could result in overwriting a file.
> The BucketingSink perform this kind of validations in the "openNewPartFile"
> method here:
> https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-filesystem/src/main/java/org/apache/flink/streaming/connectors/fs/bucketing/BucketingSink.java#L549-L561
> So this seems to be a regression an in the "old" BucketingSink this works.
>
> This can be problematic for example when migrating a job using Bucketing to
> to use the StreamingFileSink, file could be overwritten.
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