Troubleshooting: NiFi connector issues

If some or all of your connectors fail during Ingest service startup, you can refresh them or do a manual repair of individual connectors.

Problem

Some or all NiFi connectors do not properly appear when the Ingest service is started.

Solution

There are two approaches you can take to resolving connector issues, depending on the severity of the problem.

Full refresh
If you have many connectors (100+), and most have failed, doing a full refresh will be most efficient.
  1. Stop the NiFi, Zookeeper, and Query services.
  2. Delete the data files under the NiFi and Zookeeper volumes.
  3. Restart the NiFi, Zookeeper, and Query services.
Manual connector setup
If you have many connectors (100+), and only a few failed, then do a manual setup of your connectors using the connector API. For more information, see Creating a NiFi service connector.
Note: If a connector failed partway through creation, it may have generated an entry in the registry. Such orphan entries can cause the setup to fail (due to connector already existing upon next creation). In this case, you should delete the connector first, before trying to create it. For more information, see Managing connectors in the Ingest service.