Stephan Ewen commented on FLINK-4644:

It was initially used by the web frontend, IIRC.

+1 for deprecating it.

> Deprecate "flink.base.dir.path" from ConfigConstants
> ----------------------------------------------------
>                 Key: FLINK-4644
>                 URL: https://issues.apache.org/jira/browse/FLINK-4644
>             Project: Flink
>          Issue Type: Wish
>    Affects Versions: 1.2.0
>            Reporter: Maximilian Michels
>            Assignee: Maximilian Michels
>            Priority: Minor
>             Fix For: 1.2.0
> Flink's configuration entry "flink.base.dir.path" is not documented anywhere 
> but present in {{ConfigConstants}}. It is set in the JobManager but it is not 
> accessed anywhere in the code.
> I propose to deprecate the entry from ConfigConstants:
> public static final String FLINK_BASE_DIR_PATH_KEY = "flink.base.dir.path";
> I think this entry can only possibly be abused by users to write into the 
> Flink base dir or rely on some structure of the directory (which is different 
> for standalone, yarn/mesos). The only way i can see such a variable being 
> useful if it is present in the form of an environment variable to make it 
> available to other systems.

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