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https://issues.apache.org/jira/browse/NIFI-2665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15437486#comment-15437486
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ASF GitHub Bot commented on NIFI-2665:
--------------------------------------
Github user joewitt commented on the issue:
https://github.com/apache/nifi/pull/942
line 70 on invoke scripted should be final. Line 72 should be volatile.
otherwise looking good. +1
> InvokeScriptedProcessor intermittently fails validation
> -------------------------------------------------------
>
> Key: NIFI-2665
> URL: https://issues.apache.org/jira/browse/NIFI-2665
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
>
> Intermittently (perhaps in the Web Server threads only but perhaps not),
> InvokeScriptedProcessor will be reported as Invalid with something like the
> following error logged:
> 2016-08-25 09:59:46,750 WARN [NiFi Web Server-22]
> o.a.n.controller.StandardProcessorNode Failed during validation
> org.apache.nifi.processor.exception.ProcessException: No script engine
> available!
> at
> org.apache.nifi.processors.script.InvokeScriptedProcessor.setup(InvokeScriptedProcessor.java:201)
> ~[na:na]
> at
> org.apache.nifi.processors.script.InvokeScriptedProcessor.customValidate(InvokeScriptedProcessor.java:446)
> ~[na:na]
> at
> org.apache.nifi.components.AbstractConfigurableComponent.validate(AbstractConfigurableComponent.java:123)
> ~[nifi-api-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
> at
> org.apache.nifi.controller.StandardProcessorNode.isValid(StandardProcessorNode.java:917)
> ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
> at
> org.apache.nifi.controller.FlowController.getProcessorStatus(FlowController.java:2710)
> [nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
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