Matt Burgess created NIFI-6467:
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Summary: Some operations such as copy-paste give error with ghost
processors
Key: NIFI-6467
URL: https://issues.apache.org/jira/browse/NIFI-6467
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Reporter: Matt Burgess
As of NiFi 1.0.0, NiFi supports "ghost processors" (via NIFI-1052); that is, if
a processor class cannot be found (due to upgrade, name change, deleted NAR,
etc.), the instance will still come up successfully, and the UI will reflect
it's missing status (greyed out with a dotted-line border). However some other
operations cannot be performed successfully if there is a ghost processor
associated with it.
One example is copy-paste from the UI. If a Process Group containing a ghost
processor is copied, then an error dialog is presented upon paste (saying
process class not found), and the operation is not successful. There might also
be an issue with versioned flows; it seems to be related to some common
validation code.
Note that other components such as controller services may be affected as well
(i.e. perhaps parts of NIFI-5648 apply).
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