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From "Xiao Li (Jira)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-3137) Use finer grained locking in TorrentBroadcast.readObject
Date Wed, 28 Aug 2019 18:13:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao Li updated SPARK-3137:
---------------------------
    Labels:   (was: bulk-closed)

> 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
>
> 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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