[jira] [Updated] (SPARK-24611) Clean up OutputCommitCoordinator

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-24611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-24611:
----------------------------------
    Affects Version/s:     (was: 2.4.0)
                       3.0.0

> Clean up OutputCommitCoordinator
> --------------------------------
>
>                 Key: SPARK-24611
>                 URL: https://issues.apache.org/jira/browse/SPARK-24611
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 3.0.0
>            Reporter: Marcelo Vanzin
>            Priority: Major
>
> This is a follow up to SPARK-24589, to address some issues brought up during review of the change:
> - the DAGScheduler registers all stages with the coordinator, when at first view only result stages need to. That would save memory in the driver.
> - the coordinator can track task IDs instead of the internal "TaskIdentifier" type it uses; that would also save some memory, and also be more accurate.
> - {{TaskCommitDenied}} currently has a "job ID" when it's really a stage ID, and it contains the task attempt number, when it should probably have the task ID instead (like above).
> The latter is an API breakage (in a class tagged as developer API, but still), and also affects data written to event logs.



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