ERROR: LEAK: You are creating too many HashedWheelTimer instances

Summary

An error can appear in opscenterd.log if you are monitoring more than 10 clusters.

Symptoms

2026-13-26 06:01:27,644 [MyCluster_cluster] ERROR: LEAK: You are creating too many HashedWheelTimer instances.  HashedWheelTimer is a shared resource that must be reused across the JVM,so that only a few instances are created. (PoolThread-463-1)

Cause

This error has been observed in Opscenter 6.0.3.

The ERROR message is coming from the driver using netty under the hood and the fact that we create a driver cluster object for each monitored cluster and each storage cluster.

Solution

There is no harm in this message and there is no other effect on Opscenter operations. This error will be fixed in a future release of Opscenter.

See also

Internal Jira: OPSC-9224