NiFi using Clickhouse Driver NoClassDefFoundError

Question

In NiFi i use Clickhouse Driver. When i "enable" DBCPConnectionPool with driver, i get java.lang.NoClassDefFoundError: com/google/common/collect/MapMaker.

screen of settings

Answer 1

The Clickhouse Driver is not a standalone JAR, it has dependencies such as Guava. You'd have to download all the dependencies along with the driver JAR, put them all in a folder, and point to the folder in the Database Driver Location(s) property.