On Mon, Dec 09, 2013 at 07:59:10PM +0100, Andreas Karlsson wrote: > As you can see from Peter's message it is explained in > README.tuplock[1]. Basically it is used whenever more than one lock > is acquired on the same tuples as a reference to where the locks are > stored. It can store updated/deleted Xid for the tuple so it needs > to be persisted. > I recommend you read the section in README.tuplock. > 1. > https://github.com/postgres/postgres/blob/d9250da032e723d80bb0150b9276cc544df6a087/src/backend/access/heap/README.tuplock#L68
Thanks. Read that. Still, it would be good to have some information in
normal docs, but I guess this has to do for now.
Best regards,
depesz
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