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Posted to hdfs-user@hadoop.apache.org by Ravi Shetye <ra...@gmail.com> on 2013/08/12 11:32:35 UTC

fair scheduler :: reducer preemption

Hi folks
I have a hadoop cluster running Fairscheduler (
hadoop.apache.org/docs/stable/fair_scheduler.html) with preemption set to
true.
The scheduler preemption policy work well for mappers but the reducers are
not getting preempted.

Any thoughts on this?
1) is reducer preemption not supposed to work?
2) is there another parameter I have to configure to enable reducer
preemption?
3) how do i go about debugging this issue?


-- 
RAVI SHETYE