ClusterChannelException
class ClusterChannelException(message: String, cause: Throwable? = null, val unsent: Boolean = false) : RuntimeException
A peer could not be reached over the cluster channel. unsent says the request surely did not reach the peer (no connection to it, refused or not opened in time, or not sent by its deadline), so the sender may run the command itself while its deadline is ahead; any other failure of a forward may have come after the peer received it.