[ https://issues.apache.org/jira/browse/SPARK-27025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16783122#comment-16783122 ]
Hyukjin Kwon commented on SPARK-27025: -------------------------------------- It's one use case. How common is that use case? If not, let's don't add it to Spark. > 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 > Priority: Major > > 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-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org