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Mark Kirkwood wrote:
> I encountered this bug recently - and thought I'd have a try at seeing
> what might fix it.
>
> Taking an exclusive lock on the to-be-dropped table immediately (i.e in
> RemoveRel) seems to be enough to prevent the drop starting while an
> index is being created in another session. So it "fixes" the issue -
> possible objections that I can think of are:
>
> 1/ Not a general solution to multi session dependent drop/create of
> objects other than tables (unless we do 2/)
> 2/ Using this approach in all object dropping code may result in
> deadlocks (but is this worse than dangling/mangled objects?)
>
> Now, I'm conscious that there could be other show stopper reasons for
> *not* doing this that I have not thought of, but figured I'd post in
> case the idea was useful. Thoughts?
>
> Cheers
>
> Mark
>
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Bruce Momjian <[EMAIL PROTECTED]> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
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