[jira] [Commented] (SPARK-7448) Implement custom bye array serializer for use in PySpark shuffle
[ https://issues.apache.org/jira/browse/SPARK-7448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940202#comment-14940202 ] Josh Rosen commented on SPARK-7448: --- I tried a hacky prototype of this and don't remember it showing a huge difference, but that's not to say that it's not worth trying again. Feel free to take a stab at this. > Implement custom bye array serializer for use in PySpark shuffle > > > Key: SPARK-7448 > URL: https://issues.apache.org/jira/browse/SPARK-7448 > Project: Spark > Issue Type: Improvement > Components: PySpark, Shuffle >Reporter: Josh Rosen >Priority: Minor > > PySpark's shuffle typically shuffles Java RDDs that contain byte arrays. We > should implement a custom Serializer for use in these shuffles. This will > allow us to take advantage of shuffle optimizations like SPARK-7311 for > PySpark without requiring users to change the default serializer to > KryoSerializer (this is useful for JobServer-type applications). -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Commented] (SPARK-7448) Implement custom bye array serializer for use in PySpark shuffle
[ https://issues.apache.org/jira/browse/SPARK-7448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940133#comment-14940133 ] Gayathri Murali commented on SPARK-7448: Is anyone working on this ? If not, I would like to work on this. > Implement custom bye array serializer for use in PySpark shuffle > > > Key: SPARK-7448 > URL: https://issues.apache.org/jira/browse/SPARK-7448 > Project: Spark > Issue Type: Improvement > Components: PySpark, Shuffle >Reporter: Josh Rosen >Priority: Minor > > PySpark's shuffle typically shuffles Java RDDs that contain byte arrays. We > should implement a custom Serializer for use in these shuffles. This will > allow us to take advantage of shuffle optimizations like SPARK-7311 for > PySpark without requiring users to change the default serializer to > KryoSerializer (this is useful for JobServer-type applications). -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Commented] (SPARK-7448) Implement custom bye array serializer for use in PySpark shuffle
[ https://issues.apache.org/jira/browse/SPARK-7448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535316#comment-14535316 ] Josh Rosen commented on SPARK-7448: --- This is a change that would be nice to performance benchmark. It might require a large job, such as a huge flatMap, before we see any significant improvement here. > Implement custom bye array serializer for use in PySpark shuffle > > > Key: SPARK-7448 > URL: https://issues.apache.org/jira/browse/SPARK-7448 > Project: Spark > Issue Type: Improvement > Components: PySpark, Shuffle >Reporter: Josh Rosen > > PySpark's shuffle typically shuffles Java RDDs that contain byte arrays. We > should implement a custom Serializer for use in these shuffles. This will > allow us to take advantage of shuffle optimizations like SPARK-7311 for > PySpark without requiring users to change the default serializer to > KryoSerializer (this is useful for JobServer-type applications). -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
