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Re: Re: [COMMITTERS] pgsql: Write a WAL record whenever we perform an operation without

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: [COMMITTERS] pgsql: Write a WAL record whenever we perform an operation without
Date: 2010-02-01 10:36:59
Message-ID: 3f0b79eb1002010236g68009c3dmdaf8c985bcbbbc56@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-committerspgsql-hackers
On Mon, Feb 1, 2010 at 7:27 PM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> Fujii Masao wrote:
>> The cause of the problem seems to be the new heap created by
>> rebuild_relation() and copy_heap_data(), i.e., new VACUUM FULL.
>> Since it's not a temporary heap, its rd_istemp is off. OTOH
>> it needs to be synced after physical copy from old heap.
>
> Why does it need to be synced?
>
> ISTM the bug is that rd_istemp is off at that point.

Umm... ISTM that new heap needs to be synced before calling
swap_relation_files(), but, in the now, I'm not sure whether
it's really required or not. Sorry.

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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