We fixed the problem, one of our JAVA/Nifi developers recompiled the graph bundle with the latest JAVA Driver, fixed the bugs and the Apache Nifi workflow service no longer hangs. thanks for your support.
I installed the driver you recommended, but the query table processor in Nifi is looking for a SQL-like syntax, what do I specify in the "table" column using the "QueryDatabaseTable" processor in Nifi?
I reverted to version 3.5.26 and that worked. Its surprising that driver incompatible is the problem after there have been so many releases of the product. I still would like to eventually get 4.2.0 working to take advantage of its new capabilities. ...