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Posted to issues@spark.apache.org by "Shivaram Venkataraman (JIRA)" <ji...@apache.org> on 2014/10/28 18:16:34 UTC
[jira] [Resolved] (SPARK-4031) Read broadcast variables on use
[ https://issues.apache.org/jira/browse/SPARK-4031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shivaram Venkataraman resolved SPARK-4031.
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Resolution: Fixed
Fix Version/s: 1.2.0
> Read broadcast variables on use
> -------------------------------
>
> Key: SPARK-4031
> URL: https://issues.apache.org/jira/browse/SPARK-4031
> Project: Spark
> Issue Type: Bug
> Components: Block Manager, Spark Core
> Reporter: Shivaram Venkataraman
> Assignee: Shivaram Venkataraman
> Fix For: 1.2.0
>
>
> This is a proposal to change the broadcast variable implementations in Spark to only read values when they are used rather than on deserializing.
> This change will be very helpful (and in our use cases required) for complex applications which have a large number of broadcast variables. For example if broadcast variables are class members, they are captured in closures even when they are not used.
> We could also consider cleaning closures more aggressively, but that might be a more complex change.
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