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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:23:22 UTC
[jira] [Updated] (SPARK-16593) Provide a pre-fetch mechanism to
accelerate shuffle stage.
[ https://issues.apache.org/jira/browse/SPARK-16593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-16593:
---------------------------------
Labels: bulk-closed features (was: features)
> 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: Lewin Ma
> Priority: Minor
> Labels: bulk-closed, 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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