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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:12:38 UTC
[jira] [Resolved] (SPARK-19485) Launch tasks async i.e. dont wait
for the network
[ https://issues.apache.org/jira/browse/SPARK-19485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon resolved SPARK-19485.
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Resolution: Incomplete
> Launch tasks async i.e. dont wait for the network
> -------------------------------------------------
>
> Key: SPARK-19485
> URL: https://issues.apache.org/jira/browse/SPARK-19485
> Project: Spark
> Issue Type: Improvement
> Components: Scheduler
> Affects Versions: 2.1.0
> Reporter: Shivaram Venkataraman
> Priority: Major
> Labels: bulk-closed
>
> Currently the scheduling thread in CoarseGrainedSchedulerBackend is used to both walk through the list of offers and to serialize, create RPCs and send messages over the network.
> For stages with large number of tasks we can avoid blocking on RPCs / serialization by moving that to a separate thread in CGSB. As a part of this JIRA we can first investigate the potential benefits of doing this for different kinds of jobs (one large stage, many independent small stages etc.) and then propose a code change.
> cc [~kayousterhout]
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