Coherence Nodes of One VM Departed during Snapshot Operation in a Coherence Cluster that hosted in a Hypervisor environment.

(Doc ID 2400754.1)

Last updated on MAY 25, 2018

Applies to:

Oracle Coherence - Version 12.2.1.0.0 and later
Information in this document applies to any platform.

Symptoms

In a 12.2.1.x.x Coherence Cluster, all nodes of one VM departed during hotcache snapshot operation. All nodes on one VM or Multiple nodes on multiple VMs get departed from the coherence cluster during snapshot operation. This happens when the VM freezes with very high co-stops on VM side. During this time, the nodes are not reachable and seeing the IPMonitor timeout warning messages in the Coherence logs and nodes are been evicted from the cluster. Also noticed Split-Brain or Network issue from logs.

 

Cause

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