FYI, there is a bug in PartitionedCacheQuorumPolicy which prevents a cache server from starting-up. See below snippet which throws the NPE, we've fixed this in our system by adding a null check against sAddress. But letting you know in case anybody else encounters this issue.
2019-11-10T00:00:07,232 ERROR [Logger@9233868 12.2.1.4.0][Coherence] (thread=DistributedCache, member=2) Terminating PartitionedCache due to unhandled exception: java.lang.NullPointerException
2019-11-10T00:00:07,233 WARN [Logger@9233868 12.2.1.4.0][Coherence] (thread=DistributedCache, member=2) java.lang.NullPointerException
at java.lang.String.contains(String.java:2121)
at com.tangosol.net.ConfigurableQuorumPolicy$PartitionedCacheQuorumPolicy.reportLastOwnership(ConfigurableQuorumPolicy.java:808)
at com.tangosol.net.ConfigurableQuorumPolicy$PartitionedCacheQuorumPolicy.checkRecoveryMembership(ConfigurableQuorumPolicy.java:644)
at com.tangosol.net.ConfigurableQuorumPolicy$PartitionedCacheQuorumPolicy.isAllowed(ConfigurableQuorumPolicy.java:926)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService.isRecoverPartitionsAllowed(PartitionedService.CDB:13)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService.onOwnershipRequestCompleted(PartitionedService.CDB:79)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService$OwnershipRequest$Poll.onCompletion(PartitionedService.CDB:41)
at com.tangosol.coherence.component.net.Poll.close(Poll.CDB:11)
at com.tangosol.coherence.component.net.Poll.onResponded(Poll.CDB:43)
at com.tangosol.coherence.component.net.Poll.onResponse(Poll.CDB:3)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService$OwnershipRequest$Poll.onResponse(PartitionedService.CDB:70)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onMessage(Grid.CDB:53)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:23)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService.onNotify(PartitionedService.CDB:3)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onNotify(PartitionedCache.CDB:3)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:54)
at java.lang.Thread.run(Thread.java:745)