| From: | Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at> |
|---|---|
| To: | "'Barry Lind'" <barry(at)xythos(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | AW: AW: Plans for solving the VACUUM problem |
| Date: | 2001-05-22 07:54:21 |
| Message-ID: | 11C1E6749A55D411A9670001FA6879633682E6@sdexcsrv1.f000.d0188.sd.spardat.at |
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| Lists: | pgsql-hackers |
> Correct me if I am wrong, but both cases do present a problem currently
> in 7.1. The WAL log will not remove any WAL files for transactions that
> are still open (even after a checkpoint occurs). Thus if you do a bulk
> insert of gigabyte size you will require a gigabyte sized WAL
> directory. Also if you have a simple OLTP transaction that the user
> started and walked away from for his one week vacation, then no WAL log
> files can be deleted until that user returns from his vacation and ends
> his transaction.
I am not sure, it might be so implemented. But there is no technical reason
to keep them beyond checkpoint without UNDO.
Andreas
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