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https://issues.apache.org/jira/browse/SPARK-13830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-13830.
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Resolution: Fixed
Assignee: Davies Liu
Fix Version/s: 2.0.0
> Fetch large directly result from executor is very slow
> ------------------------------------------------------
>
> Key: SPARK-13830
> URL: https://issues.apache.org/jira/browse/SPARK-13830
> Project: Spark
> Issue Type: Task
> Components: Spark Core
> Reporter: Davies Liu
> Assignee: Davies Liu
> Fix For: 2.0.0
>
>
> Given two task with 100+M result on each, it take more than 50 seconds to
> fetch the results.
> The RPC may be not designed to handle large block, we should use block
> manager for that. But currently this is based on spark.rpc.message.maxSize,
> which is usually very large (> 128M) for safe, it's too large for handling
> results.
> We also counting the time to fetch the direct result (also deserialize it) as
> schedule delay, it also make sense to only fetch much smaller blocks via
> DirectResult.
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