[jira] [Reopened] (FLINK-11318) [Regression] StreamingFileSink can overwrite existing files

["Aljoscha Krettek (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-11318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aljoscha Krettek reopened FLINK-11318:
--------------------------------------
      Assignee: Aljoscha Krettek  (was: Kostas Kloudas)

reopen to change resolution

> [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: Aljoscha Krettek
>            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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