So here's the Circular Referenced Suppressed Exception
[stateTransferExecutor-thread--p221-t33] 2018-04-18T16:15:06.662+02:00 WARN [org.infinispan.statetransfer.InboundTransferTask] ISPN000210: Failed to request state of cache __vertx.subs from node sombrero-25286, segments {0}
org.infinispan.remoting.transport.jgroups.SuspectException: ISPN000400: Node sombrero-25286 was suspected
at org.infinispan.remoting.transport.ResponseCollectors.remoteNodeSuspected(ResponseCollectors.java:33)
at org.infinispan.remoting.transport.impl.SingleResponseCollector.targetNotFound(SingleResponseCollector.java:31)
at org.infinispan.remoting.transport.impl.SingleResponseCollector.targetNotFound(SingleResponseCollector.java:17)
at org.infinispan.remoting.transport.ValidSingleResponseCollector.addResponse(ValidSingleResponseCollector.java:23)
at org.infinispan.remoting.transport.impl.SingleTargetRequest.receiveResponse(SingleTargetRequest.java:51)
at org.infinispan.remoting.transport.impl.SingleTargetRequest.onNewView(SingleTargetRequest.java:42)
at org.infinispan.remoting.transport.jgroups.JGroupsTransport.addRequest(JGroupsTransport.java:921)
at org.infinispan.remoting.transport.jgroups.JGroupsTransport.invokeCommand(JGroupsTransport.java:815)
at org.infinispan.remoting.transport.jgroups.JGroupsTransport.invokeCommand(JGroupsTransport.java:123)
at org.infinispan.remoting.rpc.RpcManagerImpl.invokeCommand(RpcManagerImpl.java:138)
at org.infinispan.statetransfer.InboundTransferTask.startTransfer(InboundTransferTask.java:134)
at org.infinispan.statetransfer.InboundTransferTask.requestSegments(InboundTransferTask.java:113)
at org.infinispan.conflict.impl.StateReceiverImpl$SegmentRequest.lambda$requestState$2(StateReceiverImpl.java:164)
at org.infinispan.executors.LimitedExecutor.lambda$executeAsync$1(LimitedExecutor.java:101)
at org.infinispan.executors.LimitedExecutor.runTasks(LimitedExecutor.java:144)
at org.infinispan.executors.LimitedExecutor.access$100(LimitedExecutor.java:33)
at org.infinispan.executors.LimitedExecutor$Runner.run(LimitedExecutor.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Suppressed: java.util.concurrent.ExecutionException: org.infinispan.remoting.transport.jgroups.SuspectException: ISPN000400: Node sombrero-25286 was suspected
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915)
at org.infinispan.util.concurrent.CompletableFutures.await(CompletableFutures.java:82)
at org.infinispan.remoting.rpc.RpcManagerImpl.blocking(RpcManagerImpl.java:260)
... 10 more
[CIRCULAR REFERENCE:org.infinispan.remoting.transport.jgroups.SuspectException: ISPN000400: Node sombrero-25286 was suspected]
It does not happen with 9.2.0.Final and prevents from using ISPN embedded with logback. Do you want me to file an issue ?