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Posted to issues@spark.apache.org by "Biao Ma (JIRA)" <ji...@apache.org> on 2016/07/17 14:29:20 UTC

[jira] [Created] (SPARK-16593) Provide a pre-fetch mechanism to accelerate shuffle stage.

Biao Ma created SPARK-16593:
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             Summary: 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


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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