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https://issues.apache.org/jira/browse/FLINK-31231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17693785#comment-17693785
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CHEN Zhongpu commented on FLINK-31231:
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It seems that this issue only occurs in Mac/Linux, because When sharing files
from Windows, Docker Desktop sets permissions on shared volumes to a default
value of 0777 [1].
[1] https://docs.docker.com/desktop/troubleshoot/topics/#volumes
> flink-playgrounds has permission errors in mounted files
> --------------------------------------------------------
>
> Key: FLINK-31231
> URL: https://issues.apache.org/jira/browse/FLINK-31231
> Project: Flink
> Issue Type: Improvement
> Reporter: CHEN Zhongpu
> Priority: Minor
>
> In flink-playgrounds [1], we mount the folders under "/tmp` for both
> jobmanager and taskmanager:
> {code:java}
> - /tmp/flink-checkpoints-directory:/tmp/flink-checkpoints-directory
> - /tmp/flink-savepoints-directory:/tmp/flink-savepoints-directory {code}
> Docker mounts host volumes preserving the host UUID and GUID (in Linux, they
> are both 1000). However, the default user of flink image is "flink" who does
> not have the writable permission. As a result, it will raise an error.
>
> There are two workaround solutions:
> * Grant the world writable for those two folders (i.e., `chmod o+wx
> /tmp/flink-checkpoints-directory`)
> * Specify the user in docker-compose (i.e., "user: 1000:1000")
> But the second method may not be applied in Windows host.
> [1] https://github.com/apache/flink-playgrounds
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