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https://issues.apache.org/jira/browse/NIFI-13757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann resolved NIFI-13757.
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Fix Version/s: 2.0.0-M5
Resolution: Fixed
> Uploaded NAR hits Error and stays Installing
> --------------------------------------------
>
> Key: NIFI-13757
> URL: https://issues.apache.org/jira/browse/NIFI-13757
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Bryan Bende
> Assignee: Bryan Bende
> Priority: Major
> Fix For: 2.0.0-M5
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The NarInstallTask has a try/catch for Exception, but in some cases
> attempting to load the actual extension class may produce a sub-class of
> Error which is not caught by the task, so then the state never gets updated
> to FAILED and the error message never gets set.
> In addition, at the point during which it hits the Error, the NAR has already
> been registered in ExtensionManager, and future calls to get available
> extension types will see the bundle and attempt to access the extension
> definitions, which also encounters the same Error and fails the overall
> request. This should be made more lenient to still allow all the other
> available extensions to be returned.
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