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Posted to issues@tajo.apache.org by "Jihoon Son (JIRA)" <ji...@apache.org> on 2015/09/02 04:34:45 UTC

[jira] [Updated] (TAJO-1802) PythonScriptEngine copies controller and tajo util whenever it is initialized

     [ https://issues.apache.org/jira/browse/TAJO-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jihoon Son updated TAJO-1802:
-----------------------------
    Attachment: TAJO-1802.patch

This patch is ready for review.

> PythonScriptEngine copies controller and tajo util whenever it is initialized
> -----------------------------------------------------------------------------
>
>                 Key: TAJO-1802
>                 URL: https://issues.apache.org/jira/browse/TAJO-1802
>             Project: Tajo
>          Issue Type: Bug
>          Components: Function/UDF
>            Reporter: Jihoon Son
>            Assignee: Jihoon Son
>             Fix For: 0.11.0
>
>         Attachments: TAJO-1802.patch
>
>
> In the current implementation, python script files are copied and deleted whenever a task is launched and stopped. This incurs two problems.
> * Frequent copy of script files degrades the overall performance.
> * Among python scripts, tajo_util.py is shared by multiple tasks of a worker. This incurs I/O problem during unit tests because the shared file is also removed when a task is stopped.



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