Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp> writes:
> I found pgbench sometimes receives responces of "UPDATE 0" from HEAD server.
> When I re-tested pgbench with 8.4.2 server, all of the results were "UPDATE 1".
> Are there known issues in HEAD for concurrent updates?
I suspect it might have something to do with the recent EvalPlanQual
rewrite, but exactly what the problem is is not clear.
regards, tom lane