> My point is that we'll need in dynamic cleanup anyway and UNDO is > what should be implemented for dynamic cleanup of aborted changes. I do not yet understand why you want to handle aborts different than outdated tuples. The ratio in a well tuned system should well favor outdated tuples. If someone ever adds "dirty read" it is also not the case that it is guaranteed, that nobody accesses the tuple you currently want to undo. So I really miss to see the big difference. Andreas ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl
- AW: [HACKERS] Plans for solving the VACUUM problem Zeugswetter Andreas SB
- Re: AW: [HACKERS] Plans for solving the VACUUM... Tom Lane
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- RE: AW: [HACKERS] Plans for solving the VACUUM... Zeugswetter Andreas SB
- RE: AW: [HACKERS] Plans for solving the VACUUM... Mikheev, Vadim
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- RE: AW: [HACKERS] Plans for solving the VACUUM... Mikheev, Vadim
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- Re: AW: [HACKERS] Plans for solving the VA... Philip Warner
- RE: AW: [HACKERS] Plans for solving the VACUUM... Mikheev, Vadim
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB
- AW: [HACKERS] Plans for solving the VACUUM pro... Zeugswetter Andreas SB