You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Erik van Oosten (JIRA)" <ji...@apache.org> on 2019/03/01 16:10:00 UTC

[jira] [Created] (SPARK-27025) Speed up toLocalIterator

Erik van Oosten created SPARK-27025:
---------------------------------------

             Summary: Speed up toLocalIterator
                 Key: SPARK-27025
                 URL: https://issues.apache.org/jira/browse/SPARK-27025
             Project: Spark
          Issue Type: Wish
          Components: Spark Core
    Affects Versions: 2.3.3
            Reporter: Erik van Oosten


Method {{toLocalIterator}} fetches the partitions to the driver one by one. However, as far as I can see, any required computation for the yet-to-be-fetched-partitions is not kicked off until it is fetched. Effectively only one partition is being computed at the same time. 



Desired behavior: immediately start calculation of all partitions while retaining the download-a-partition at a time behavior.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

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