Fawze You said that any role can be moved. How is that done for ones like "HDFS Balancer" or JobHistory servers? These roles can't be added/moved via CM that I can see. ... View more

Slight hijack of the thread but how does one change the balancer role to another host? I wish to decommission the one that it is currently assigned to. ... View more

When I said roll-back I was not referring to an automated one, obviously that is best handled by your system.   I meant that over time we are changing settings. I would like to somehow capture that and put it into Perforce so that we can track what was done when. This would make it much easier to get back to an existing correct setup when things go wrong, as they always do.   Also, where are items like the TaskTracker settings. I don't see them in that path, maybe I'm overlooking them.   Thanks again. ... View more

This is an old post but I have a followup question to Tgrayson's excellent response.   These directories have the "client" configurations, is there a similar location where the server information is kept? I am trying to recreate and preserve the history of changes made to our cluster in order to baseline and, perhaps, roll-back.   Or is there a better way?   Thanks Arthur ... View more