Hello NiFi community, I believe a feature that NiFi administrators would find useful is doing an inverse search on provenance.
So for example, instead of just being able to search on provenance to find provenance with Event Type of SEND we also have the option of finding all provenance that does NOT have Event Type of SEND. The underlying apache lucene already supports Boolean queries. Actually, NiFi is already doing a Boolean query. But now instead of doing an Occur.MUST, NiFi will also be able to do an Occur.MUST_NOT [1] I am thinking there will be a GUI change as well, as there will be a "NOT" or "INVERSE" column header at the far right of the Provenance's Search Events pop up, with checkboxes underneath it (i.e. a checkbox to the right of each fieldname/value that a user can query provenance events for. If the checkbox is checked, then the user is indicating to do an inverse query for the value entered.) I put together a proof of concept and it works without any obvious complexity or gotcha issues. What do you think about this? Thank You, Nissim Shiman [1] https://github.com/apache/nifi/blob/main/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/main/java/org/apache/nifi/provenance/lucene/LuceneUtil.java#L108
