It was Version 0.94.3, r38dbd22c99debd9010e9e5f4fbabeeaf3c4e1ddd
On Tue, Nov 27, 2012 at 7:41 PM, lars hofhansl <[email protected]> wrote: > Interesting. Thanks N. > > I'll look through the 0.94 commits since 0.94.1 to see what's causing this. > With 0.94 trunk you mean the 0.94.3RC? > > > -- Lars > > > > ________________________________ > From: Nicolas Liochon <[email protected]> > To: [email protected] > Sent: Tuesday, November 27, 2012 5:07 AM > Subject: small perf degradation in 0.94 trunk vs. older versions > > Hi, > > On a create table / reassignment, I feel we lost some performances recently > on 0.94. It's not huge (5% to 10%), but I would prefer them to be the other > way around. > Here are some tests I've done on test cluster, all the time with Hadoop > 1.1.0; > > scenario: 2 RS. Create a table with 3000 regions. > Start a third RS. Kill -15 the second one: there are 1500 regions to > reassign. > > I've made multiple measures, there are all there: > It's in seconds. > > Creating a table with 3000 regions: > 0.92: 261s; 260s > 0.94.0: 260s; 260s > 0.94.1: 261s; 260s > 0.94 trunk: 292s; 281s; 282s; > 0.96 trunk: 173s; 178s > > Reassign after the kill > 0.92: 107s, 110s > 0.94.0: 105s; 105s > 0.94.1: 107s; 107s > 0.94 trunk: 122s; 105s; 116s > 0.96 trunk: 50s; 50s; > > I don't know if there is a reason the the 0.94 trunk results... > The results for 0.96s are actually not that great, my tests (on a single > machine) were much better a few months ago. I will look at that. > > Cheers, > > N. >
