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From "Tathagata Das (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-10649) Streaming jobs unexpectedly inherits job group, job descriptions from context starting thread
Date Mon, 21 Sep 2015 23:49:04 GMT

     [ https://issues.apache.org/jira/browse/SPARK-10649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tathagata Das updated SPARK-10649:
----------------------------------
    Target Version/s: 1.6.0, 1.5.1  (was: 1.6.0)

> Streaming jobs unexpectedly inherits job group, job descriptions from context starting
thread
> ---------------------------------------------------------------------------------------------
>
>                 Key: SPARK-10649
>                 URL: https://issues.apache.org/jira/browse/SPARK-10649
>             Project: Spark
>          Issue Type: Bug
>          Components: Streaming
>    Affects Versions: 1.3.1, 1.4.1, 1.5.0
>            Reporter: Tathagata Das
>            Assignee: Tathagata Das
>             Fix For: 1.6.0
>
>
> The job group, and job descriptions information is passed through thread local properties,
and get inherited by child threads. In case of spark streaming, the streaming jobs inherit
these properties from the thread that called streamingContext.start(). This may not make sense.

> 1. Job group: This is mainly used for cancelling a group of jobs together. It does not
make sense to cancel streaming jobs like this, as the effect will be unpredictable. And its
not a valid usecase any way, to cancel a streaming context, call streamingContext.stop()
> 2. Job description: This is used to pass on nice text descriptions for jobs to show up
in the UI. The job description of the thread that calls streamingContext.start() is not useful
for all the streaming jobs, as it does not make sense for all of the streaming jobs to have
the same description, and the description may or may not be related to streaming.



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