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

["Taeyun Kim (JIRA)" <ji...@apache.org>]

Taeyun Kim created SPARK-7439:
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             Summary: 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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