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https://issues.apache.org/jira/browse/FLINK-5818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15872581#comment-15872581
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ASF GitHub Bot commented on FLINK-5818:
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Github user gyfora commented on the issue:
https://github.com/apache/flink/pull/3335
I agree with @StephanEwen that people probably manage the directory
permissions directly when configuring the Flink jobs. It would be quite
annoying if the Flink job changed the permissions you set from somewhere else.
> change checkpoint dir permission to 700 for security reason
> -----------------------------------------------------------
>
> Key: FLINK-5818
> URL: https://issues.apache.org/jira/browse/FLINK-5818
> Project: Flink
> Issue Type: Improvement
> Components: Security, State Backends, Checkpointing
> Reporter: Tao Wang
>
> Now checkpoint directory is made w/o specified permission, so it is easy for
> another user to delete or read files under it, which will cause restore
> failure or information leak.
> It's better to lower it down to 700.
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