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Posted to issues@spark.apache.org by "Marcelo Vanzin (JIRA)" <ji...@apache.org> on 2018/08/21 18:27:02 UTC

[jira] [Assigned] (SPARK-24296) Support replicating blocks larger than 2 GB

     [ https://issues.apache.org/jira/browse/SPARK-24296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcelo Vanzin reassigned SPARK-24296:
--------------------------------------

    Assignee: Imran Rashid

> Support replicating blocks larger than 2 GB
> -------------------------------------------
>
>                 Key: SPARK-24296
>                 URL: https://issues.apache.org/jira/browse/SPARK-24296
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Block Manager, Spark Core
>    Affects Versions: 2.3.0
>            Reporter: Imran Rashid
>            Assignee: Imran Rashid
>            Priority: Major
>
> Replicating blocks send the entire block data in one frame.  This results in a failure on the receiving end for blocks larger than 2GB.
> We should change block replication to send the block data as a stream when the block is large (building on the network changes in SPARK-6237).  This can use the conf spark.maxRemoteBlockSizeFetchToMem to decided when to replicate as a stream, the same as we do for fetching shuffle blocks and fetching remote RDD blocks.



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