https://community.cloudera.com/t5/Support-Questions/Drill-in-Nifi-DBCPConnectionPool-1-5-0-error-failed-to/m-p/222839#M184705 <P>I don't have a Drill environment to test with, but downloaded Drill JDBC driver and tested if I can load its Driver class with NiFi DBCPConnectionPool. Since drill driver needs other dependency jars, I needed to use the jar which contains all dependencies.</P><P>Please try drill-jdbc-all-1.13.0.jar instead.</P><P>apache-drill-1.13.0/jars/jdbc-driver/drill-jdbc-all-1.13.0.jar</P> Wed, 20 Jun 2018 14:56:30 GMT kkawamura 2018-06-20T14:56:30Z