[jira] [Assigned] (SPARK-6629) cancelJobGroup() may not work for jobs whose job groups are inherited from parent threads

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-6629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-6629:
-----------------------------------

    Assignee: Apache Spark  (was: Josh Rosen)

> cancelJobGroup() may not work for jobs whose job groups are inherited from parent threads
> -----------------------------------------------------------------------------------------
>
>                 Key: SPARK-6629
>                 URL: https://issues.apache.org/jira/browse/SPARK-6629
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.0.2, 1.1.2, 1.2.2, 1.3.0
>            Reporter: Josh Rosen
>            Assignee: Apache Spark
>            Priority: Minor
>
> When a job is submitted with a job group and that job group is inherited from a parent thread, there are multiple bugs that may prevent this job from being cancelable via SparkContext.cancelJobGroup():
> - When filtering jobs based on their job group properties, DAGScheduler calls get() instead of getProperty(), which does not respect inheritance, so it will skip over jobs whose groups were inherited.
> - Properties objects are mutable, but we do not make defensive copies / snapshots, so modifications of the parent thread's job group will cause running jobs' groups to change.
> Both of these issues are easy to fix: use `getProperty()` and perform defensive copying.



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