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https://issues.apache.org/jira/browse/SPARK-16593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15381391#comment-15381391
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Apache Spark commented on SPARK-16593:
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User 'f7753' has created a pull request for this issue:
https://github.com/apache/spark/pull/14239
> Provide a pre-fetch mechanism to accelerate shuffle stage.
> -----------------------------------------------------------
>
> Key: SPARK-16593
> URL: https://issues.apache.org/jira/browse/SPARK-16593
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Biao Ma
> Priority: Minor
> Labels: features
>
> Currently, the `NettyBlockRpcServer` will reading data through BlockManager,
> while the block is not cached in memory, the data should be read from DISK
> first, then into MEM. I wonder if we implement a mechanism add a message
> contains the blockIds that the same as the openBlock message but one loop
> ahead, then the `NettyBlockRpcServer ` will load the block ready for transfer
> to the reduce side.
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