| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> |
| Cc: | david(at)pgmasters(dot)net, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, Masao Fujii <masao(dot)fujii(at)gmail(dot)com>, kleptog(at)svana(dot)org, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WAL logging problem in 9.4.3? |
| Date: | 2016-09-29 07:59:55 |
| Message-ID: | CAB7nPqT5x05tG7aut1yz+WJN76DqNz1Jzq46fSFtee4YbY0YcA@mail.gmail.com |
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On Mon, Sep 26, 2016 at 5:03 PM, Kyotaro HORIGUCHI
<horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> Hello, I return to this before my things:)
>
> Though I haven't played with the patch yet..
Be sure to run the test cases in the patch or base your tests on them then!
> Though I don't know how it actually impacts the perfomance, it
> seems to me that we can live with truncated_to and sync_above in
> RelationData and BufferNeedsWAL(rel, buf) instead of
> HeapNeedsWAL(rel, buf). Anyway up to one entry for one relation
> seems to exist at once in the hash.
TBH, I still think that the design of this patch as proposed is pretty
cool and easy to follow.
--
Michael
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