Re: Collation versioning

On Wed, Sep 5, 2018 at 8:20 AM Thomas Munro
<thomas.munro@enterprisedb.com> wrote:
> On Wed, Sep 5, 2018 at 3:35 AM Christoph Berg <myon@debian.org> wrote:
> > int main (void) { puts (gnu_get_libc_version ()); return 0; }
> >
> > $ ./a.out
> > 2.27
>
> Hmm.  I was looking for locale data version, not libc.so itself.  I
> realise they come ultimately from the same source package, but are the
> locale definitions and libc6 guaranteed to be updated at the same
> time?

And even if they are, what if your cluster is still running and still
has the older libc.so.6 mapped in?  Newly forked backends will see new
locale data but gnu_get_libc_version() will return the old string.
(Pointed out off-list by Andres.)  Eventually you restart your cluster
and start seeing the error.

So, it's not ideal but perhaps worth considering on the grounds that
it's better than nothing?

--
Thomas Munro
http://www.enterprisedb.com