> This seems to be something YARN fair-scheduler reporting it this way.. >although Tez doesn't seem to handle.
Pepperdata? > I did come across HIVE-12957, in which the fix patch seems to only >report the error better instead of doing anything about it. ... > Now comes my question, is this in an expected failure case ? Is there a >bug I should know about in YARN scheduling or am I misunderstanding the >issue? YARN is reporting -ve head-room, this means your cluster is running with negative-capacity for some strange reason. That is a bug somewhere in the FairScheduler's internal state. The issue was never reproduced after we switched over to the CapacityScheduler, so it's in limbo. Cheers, Gopal
