An Apache curator error message is displayed in the logs, when new servers are added to the ZooKeeper cluster
Explanation:
When additional servers are added to the ZooKeeper cluster, the following Apache curator related error message is displayed in the logs for each newly added server, even though the servers are successfully added in the cluster:
ERROR org.apache.curator.framework.imps.EnsembleTracker - Invalid config event received
Action:
As there is no loss in functionality and the servers are added successfully, no action needs to be performed. However, a bug has been raised with Apache.