[jira] [Created] (SPARK-9144) Remove DAGScheduler.runLocallyWithinThread and spark.localExecution.enabled

["Josh Rosen (JIRA)" <ji...@apache.org>]

Josh Rosen created SPARK-9144:
---------------------------------

             Summary: Remove DAGScheduler.runLocallyWithinThread and spark.localExecution.enabled
                 Key: SPARK-9144
                 URL: https://issues.apache.org/jira/browse/SPARK-9144
             Project: Spark
          Issue Type: New Feature
          Components: Spark Core
            Reporter: Josh Rosen
            Assignee: Josh Rosen


Spark has an option called {{spark.localExecution.enabled}}; according to the docs:

{quote}
Enables Spark to run certain jobs, such as first() or take() on the driver, without sending tasks to the cluster. This can make certain jobs execute very quickly, but may require shipping a whole partition of data to the driver.
{quote}

This feature ends up adding quite a bit of complexity to DAGScheduler, especially in the {{runLocallyWithinThread}} method, but as far as I know nobody uses this feature (I searched the mailing list and haven't seen any recent mentions of the configuration nor stacktraces including the runLocally method).  As a step towards scheduler complexity reduction, I propose that we remove this feature and all code related to it for Spark 1.5. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org