Re: Errors on missing pg_subtrans/ files with 9.3

Alvaro Herrera escribió:
> Andres Freund escribió:

> This seems simple to handle by adding the check you propose to the loop.
> Basically if the xmax doesn't match the xmin, we reached the end,
> there's nothing more to lock and we can return success without any
> further work:

As mentioned in the thread for bug #8434, the complete working patch for
this is attached.

> > b) Check whether a chain element actually aborted - currently we're
> >    only doing that in the HEAP_KEYS_UPDATED updated case, but that seems
> >    wrong (we can't check for committed tho!).
>
> Let me point out that this is exactly the same code that would be
> affected by my proposed fix for #8434, which would have this check the
> updateXid in all cases, not only in KEYS_UPDATED as currently.

I posted a patch for this problem in the thread about #8434.

--
Álvaro Herrera                http://www.2ndQuadrant.com/
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