Re: Proposed patch: synchronized_scanning GUC variable

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От Neil Conway
Тема Re: Proposed patch: synchronized_scanning GUC variable
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Msg-id 1201503264.1204.140.camel@goldbach
обсуждение исходный текст
Ответ на Re: Proposed patch: synchronized_scanning GUC variable  (Russell Smith <mr-russ@pws.com.au>)
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On Mon, 2008-01-28 at 17:27 +1100, Russell Smith wrote:
> Can somebody explain why it's important to load with
> synchronized_scanning off?

*Loading* with synchronized scanning off is not important (and is not
implemented by the patch).

*Dumping* with synchronized scanning off is necessary to ensure that the
order of the rows in the pg_dump matches the on-disk order of the rows
in the table, which is important if you want to preserve the clustering
of the table data on restore.

See the -hackers thread:

http://markmail.org/message/qbytsco6oj2qkxsa

-Neil



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