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https://issues.apache.org/jira/browse/SYSTEMML-1131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deron Eriksson resolved SYSTEMML-1131.
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Resolution: Fixed
Fix Version/s: SystemML 1.0
Fixed by [PR303|https://github.com/apache/incubator-systemml/pull/303].
> NPE in executeRemoteSparkParFor
> -------------------------------
>
> Key: SYSTEMML-1131
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1131
> Project: SystemML
> Issue Type: Bug
> Reporter: Felix Schüler
> Assignee: Felix Schüler
> Fix For: SystemML 1.0
>
>
> The method ParForProgramBlock.releaseForcedRecompile(long tid) calls
> recompileProgramBlockHierarchy2Forced with execution type (et) null. This
> leads to a NullPointerException.
> I haven't fully figured out under which circumstances this occurs but it
> happens when calling an external function inside a forced parfor_spark.
> The ParForProgramBlock.executeRemoteSparkParFor method sets the flagForced to
> true which then in turn calls the above method with et==null.
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