[jira] [Commented] (REEF-310) Memory utilization for class hierarchies is O(#contexts) in the bridge

["Yingda Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/REEF-310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530884#comment-14530884 ] 

Yingda Chen commented on REEF-310:
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Is this JIRA suggesting that we want to enforce class hierarchy to be a single instance in one job submission? Not sure if that is a good idea, it seem reasonable to want different class hierarchy in different contexts, say a graph context and a streaming context (even though we do not have full support for that at the moment).

> Memory utilization for class hierarchies is O(#contexts) in the bridge
> ----------------------------------------------------------------------
>
>                 Key: REEF-310
>                 URL: https://issues.apache.org/jira/browse/REEF-310
>             Project: REEF
>          Issue Type: Improvement
>          Components: REEF Bridge
>            Reporter: Markus Weimer
>            Priority: Minor
>              Labels: Performance
>
> In {{ActiveContextBridge}}, we load the class hierarchy for the C# side in the constructor (thanks to [REEF-304]). However, we load the *same* class hierarchy for all contexts. Also, we don't seem to modify it. This creates a memory complexity of O(#contexts), where it really could be O(1).



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