Re: danger of stats_temp_directory = /dev/shm

On 2013-08-19 14:28:28 -0400, Tom Lane wrote:
> One possibility is to do the initial check somewhere shortly after
> ChangeToDataDir(), and have the GUC check hook only attempt to make a
> check in SIGHUP context.  Unfortunately we aren't passing the context to
> check hooks, only GucSource which isn't adequate for this.  Not sure if we
> want to go so far as to change the check-hook API at this point.  We could
> probably think of some other, klugy way to tell if it's initial startup.

Is it even actually safe to have stats_temp_directory PGC_SIGHUP after
the per DB splitup? I haven't audited the code for it, but it seems
somewhat likely that we would end up with some files in the old and some
in the new directory?

Greetings,

Andres Freund

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