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From "Chakravarthi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-27541) Refresh class definitions for jars added via addJar()
Date Thu, 02 May 2019 04:29:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-27541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831408#comment-16831408
] 

Chakravarthi commented on SPARK-27541:
--------------------------------------

[~navedalam] I would like to look into this 

> Refresh class definitions for jars added via addJar()
> -----------------------------------------------------
>
>                 Key: SPARK-27541
>                 URL: https://issues.apache.org/jira/browse/SPARK-27541
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.2.3
>            Reporter: Naved Alam
>            Priority: Major
>
> Currently, if a class is loaded by the executor, its definition cannot be updated (because
classloaders won't load an already loaded class again). For use cases with long running sparkContexts,
this becomes a problem when there are requirements to update the definition of one of these
classes.
> There should be a spark property which when turned on, allows the executors to refresh
the definitions of these classes if they were to be added as a new jar using the addJar API.
>  
>  



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