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https://issues.apache.org/jira/browse/NIFI-2815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15517050#comment-15517050
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ASF GitHub Bot commented on NIFI-2815:
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Github user pvillard31 commented on the issue:
https://github.com/apache/nifi/pull/1055
+1 merging into master
> Cannot change script engine in InvokeScriptedProcessor
> ------------------------------------------------------
>
> Key: NIFI-2815
> URL: https://issues.apache.org/jira/browse/NIFI-2815
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Matt Burgess
> Assignee: Matt Burgess
> Fix For: 1.1.0
>
>
> Due to a regression introduced in NIFI-2665, the script engine for an
> InvokeScriptedProcessor is instantiated only once. For instances already in
> the flow, the Script Engine property setting will be honored, but it cannot
> be changed. For new InvokeScriptedProcessor instances, the script engine will
> be set to ECMAScript and also cannot be changed.
> Seems that before NIFI-2665, script engine setup was happening too often, now
> it is not happening enough. The script engine should be reset when the
> property has been modified.
> A workaround is to change the processor to the way you want it, then save it
> as a template, then delete the original and re-load it from the template.
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