Jay Vyas 2012-10-15, 21:32
-Re: 33%, 66%, and 100% *reducer* optimization
Vinod Kumar Vavilapalli 2012-10-15, 23:33
Reduce has three phases - shuffle, sort and reduce.
So, 33% would imply the shuffle phase end, and 66% would refer to the end of sort phase.
On Oct 15, 2012, at 2:32 PM, Jay Vyas wrote:
> Hi guys !
> We all know that there are major milestones in reducers (33%, 66%)
> In particular:
> Im wondering: What should we optimize for in case a job hangs at 33%, as
> compared with 66% ?
> Jay Vyas