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https://issues.apache.org/jira/browse/SPARK-10649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14901645#comment-14901645
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Apache Spark commented on SPARK-10649:
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User 'tdas' has created a pull request for this issue:
https://github.com/apache/spark/pull/8856
> 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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