Ответ: [BUGS] reproducable command sequence to get "mdopen: Couldn't open..."

>>Making ALTER TABLE RENAME abort-safe requires changing the
conventions
>>for naming physical table files, and the details have been
sufficiently
>>controversial that it's not been done yet. In the meantime our
only
>>choices are to forbid ALTER TABLE RENAME within transaction
blocks, or
>>allow it with the knowledge that people can shoot themselves in
the foot
>>with it. The above warning notice is the current compromise.
>
> Is it going to be in 7.1? If not, it might be worth disabling in
TX blocks
> since a mistyped SQL query can cause an aborted transaction,
something that
> is somewhat counter-intuitive. Maybe the message should be
expanded to say:

Just couple days ago I've said that right now I implement
new file naming because of this is required by WAL. As additional
result ALTER TABLE RENAME will not rename files any more and so will
be rollback-able. Please wait ~ 1 day -:)

Vadim