Is there a possibility to defined somewhere a trigger that gets executed when a ProcessGroup starts?   My use case is this:   Someone creates a copy of an existing ProcessGroup in the Nifi workspace When the ProcessGroup starts some administrative tasks are started that setup the ProcessGroup E.g. create required database E.g. created required directories Any ProcessGroup initialization ... View more

On my 1.9.2 standalone installation data provenance is working correctly for a few days then after some inactivity on the server all the data provenance in all individual processors and in the general reporting stays empty, even when I send new data through all the processors. When opening a data provenance menu I see a very short popup menu appearing, but it closes for me too fast to see what is going on. On disk I still have 145GB available. The problem goes away when I restart the Nifi instance, and pops up again after a few days. ... View more