select avg force key never finishes (by vadim)

[Henrik Ingo]

Vadim reported this on drizzle-discuss, using Drizzle 7 RPMs.

> ( mysql -e "select avg(id) from sbtest$i FORCE KEY (PRIMARY); " sbtest
> ) > $OUTDIR/warmup.${i}.out 2>&1 &
>
> This is 16 connections running in parallel.
>
> This process never finished in drizzle,
> as it seems it was serialized somewhere and I saw only 1 thread running.

All threads seem to be either in
pthread_cond_wait or pthread_cond_timedwait

[Stewart Smith (stewart)]

On Sun, 19 Feb 2012 18:01:44 -0000, Henrik Ingo <email address hidden> wrote:
> All threads seem to be either in
> pthread_cond_wait or pthread_cond_timedwait

That's pretty interesting. Do we know on what mutex?

--
Stewart Smith