This is most likely caused by missing heartbeat from the NC to the CC. Some macOS versions had issues with reestablishing connected sockets after waking up from sleep. But it could also be some unexpected exception that caused the NC to shut down. If you could share the logs with me, I can tell you for sure.
Cheers, Murtadha On 05/01/2018, 9:06 AM, "Michael Carey" <[email protected]> wrote: Q: Do we maybe have a stability regression in recent versions (e.g., the one leading to the UW snapshot)? They have occasionally seen things like this and I just did too. (The system had been running for awhile in the background on my Mac - e.g., for a day or so.) Error: Cluster is in UNUSABLE state. One or more Node Controllers have left or haven't joined yet.
