On Fri, Sep 30, 2011 at 11:44 AM, Roman Shaposhnik <r...@apache.org> wrote: > I apologize if my level of institutional knowledge of these things is > lacking, but do you have any > benchmarking results between 0.22 and 0.20.2xx? The reason I'm asking > is twofold -- I really > would like to see an objective numbers qualifying the viability of > 0.22 from the performance stand point, > but more importantly I would really like to include the benchmarking > code into Bigtop.
0.22 currently suffers from MAPREDUCE-2266, which, last time I benchmarked it, caused a significant slowdown. iirc a terasort ran something like twice as slow on my test cluster due to this bug. 0.23/MR2 doesn't suffer from this bug. -Todd -- Todd Lipcon Software Engineer, Cloudera
