Zookeeper Quorum - Dremio Connector failed. - Error message[30001]Connection failure. Host: port:0. Error: The requested address is not valid in its context

Summary/Reported Issue

Attempting to connect to Zookeeper quorum using Dremio Connector failed with

Error message[30001]Connection failure. Host: port:0. Error: The requested address is not valid in its context

Relevant Versions

Dremio 25.2.x

Troubleshooting Steps

* Tested URLs with nslookup, confirming name resolution was not the issue.

* Tried using IP addresses instead of hostnames, which resulted in a similar error.

Cause

Incorrect cluster id configuration.

Steps to Resolve

The  Cluster ID was incorrect in that it didn’t go deep enough. It was updated from /path/to/root to /path/to/root/coordinator .