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https://issues.apache.org/jira/browse/SYSTEMML-1616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Glenn Weidner updated SYSTEMML-1616:
------------------------------------
    Fix Version/s:     (was: SystemML 1.0)
                   SystemML 0.15

> Multi-threaded JMLC failures due to side effects of constant folding
> --------------------------------------------------------------------
>
>                 Key: SYSTEMML-1616
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1616
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.15
>
>
> In scenarios with multiple concurrently running JMLC connections and prepared 
> scripts per JVM process (e.g., in spark executors, or multi-threaded 
> containers), there are potential side effects between scripts which 
> ultimately can lead to compilation and runtime errors.
> The root cause are static reuse objects (for program block and execution 
> context) in the constant folding rewrite. Accordingly, folded constants might 
> leak from one script compilation into another script compilation which can 
> cause all sorts of incomprehensible errors.



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