On 6/6/17 12:39 PM, Sean Busbey wrote:
For example, has anyone done perf comparisons between 1.7 and 1.8.z?
When it came time for me to start telling folks that it was "safe" to
upgrade to 1.7.z I ran into something like a 40-60% perf degradation
on writes compared to 1.6 across the board. A little bit of this was
already fixed in 1.8 at the time, but a substantial amount required a
non-trivial refactoring because just no one had looked[1]. Even after
all of that, I still had to caveat things because I still saw a
~15-30% perf drop on random writes in the presence of lots of columns.
At a risk of de-railing otherwise good discussion on releases: do you
recall if you had accounted for the following, Sean? (notably, the last
code snippet)
https://accumulo.apache.org/blog/2016/11/02/durability-performance.html
