Mark Bean created NIFI-15014:
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             Summary: UpdateAttribute rule search may fail if rule comments are 
missing
                 Key: NIFI-15014
                 URL: https://issues.apache.org/jira/browse/NIFI-15014
             Project: Apache NiFi
          Issue Type: Bug
            Reporter: Mark Bean
            Assignee: Mark Bean


Using the Search option for Rules in the Advanced settings of UpdateAttribute 
sometimes fails to filter appropriately - or at all. Upon investigating, it was 
determined the failure is due to Rules with no Comments field. 

For newly created Rules, this is not an issue as all Rules are defined with a 
Comments field, even if it contains an empty value. However, it has been 
observed that the Comments field may be missing altogether. It is possible this 
happens when a dataflow is migrated from a older NiFi version which did not 
support a Rule Comments field.

In order to mitigate the resulting error, the Comments field should be 
confirmed to exist prior to searching for text within it.



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