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Posted to issues@spark.apache.org by "Shixiong Zhu (Jira)" <ji...@apache.org> on 2019/08/28 18:01:00 UTC
[jira] [Reopened] (SPARK-3137) Use finer grained locking in
TorrentBroadcast.readObject
[ https://issues.apache.org/jira/browse/SPARK-3137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shixiong Zhu reopened SPARK-3137:
---------------------------------
Assignee: Shixiong Zhu
> Use finer grained locking in TorrentBroadcast.readObject
> --------------------------------------------------------
>
> Key: SPARK-3137
> URL: https://issues.apache.org/jira/browse/SPARK-3137
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Reporter: Reynold Xin
> Assignee: Shixiong Zhu
> Priority: Major
> Labels: bulk-closed
>
> TorrentBroadcast.readObject uses a global lock so only one task can be fetching the blocks at the same time.
> This is not optimal if we are running multiple stages concurrently because they should be able to independently fetch their own blocks.
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