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https://issues.apache.org/jira/browse/SPARK-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119362#comment-14119362
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Mridul Muralidharan commented on SPARK-3019:
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Just went over the proposal in some detail.
[~rxin] did you take a look at the proposal in SPARK-1476 ?
The ManagedBuffer detailed in this document does not satisfy most of the
interface or functional requirements in 1476 - which would require us to
redesign this interface when we need to support larger than 2 GB for blocks in
spark : unless I missed something.
> Pluggable block transfer (data plane communication) interface
> -------------------------------------------------------------
>
> Key: SPARK-3019
> URL: https://issues.apache.org/jira/browse/SPARK-3019
> Project: Spark
> Issue Type: Improvement
> Components: Shuffle, Spark Core
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Attachments: PluggableBlockTransferServiceProposalforSpark - draft
> 1.pdf
>
>
> The attached design doc proposes a standard interface for block transferring,
> which will make future engineering of this functionality easier, allowing the
> Spark community to provide alternative implementations.
> Block transferring is a critical function in Spark. All of the following
> depend on it:
> * shuffle
> * torrent broadcast
> * block replication in BlockManager
> * remote block reads for tasks scheduled without locality
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