[jira] [Resolved] (SPARK-7439) Should delete temporary local directories

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-7439?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-7439.
------------------------------
    Resolution: Duplicate

Not sure what to do with this one as the dirs should already be cleaned up on JVM exit, certainly as of 1.4, and certainly if the context stops cleanly. This doesn't mean there aren't failure cases where these might be left, since nothing can always clean up in case of a hard failure. Issues like SPARK-7503 which are tackling specific common cases of this might be the best way forward.

> Should delete temporary local directories
> -----------------------------------------
>
>                 Key: SPARK-7439
>                 URL: https://issues.apache.org/jira/browse/SPARK-7439
>             Project: Spark
>          Issue Type: Bug
>          Components: Block Manager
>    Affects Versions: 1.3.1
>         Environment: Windows 7, CentOS 6.6
>            Reporter: Taeyun Kim
>            Priority: Minor
>
> Spark does not delete temporary local directories.
> After a spark program completes, there are 3 temporary directories remain in the temp directory. The directory names are like this: spark-2e389487-40cc-4a82-a5c7-353c0feefbb7
> The directories are empty.
> They are created every time the Spark program runs. So the number of files and directories keeps growing.
> I've traced the spark source code.
> The module methods that create the 3 'temp' directories are as follows:
> * DiskBlockManager.createLocalDirs
> * HttpFileServer.initialize
> * SparkEnv.sparkFilesDir
> They (eventually) call Utils.getOrCreateLocalRootDirs and then Utils.createDirectory, which intentionally does NOT mark the directory for automatic deletion.
> The comment of createDirectory method says: "The directory is guaranteed to be newly created, and is not marked for automatic deletion."
> But since the directories does not hold useful data after the program completes, they should be deleted if possible.



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