Re: Simplifying replication
От | Hannu Krosing |
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Тема | Re: Simplifying replication |
Дата | |
Msg-id | 1289067736.2313.1896.camel@hvost обсуждение исходный текст |
Ответ на | Re: Simplifying replication (Dimitri Fontaine <dimitri@2ndQuadrant.fr>) |
Ответы |
Re: Simplifying replication
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Список | pgsql-hackers |
On Sat, 2010-11-06 at 18:02 +0100, Dimitri Fontaine wrote: > Hannu Krosing <hannu@2ndQuadrant.com> writes: > > To make pg_basebackup.py self-sufficient it should also open 2nd > > connection to the same master and make sure that all WAL files are > > copied for the duration of base copy. > > Excellent idea, will make that happen soon'ish. Unitil I learned better, I thought that this is how SR is supposed to works ;) btw, as next step you could backport this to 8.x and have most of the benefits of SR. It should not be very hard to keep track of wal position inside a pl/pythonu function and send one or more records back in form of (walfile_name text, start_pos int, data bytea) and then call this function from client every second to keep possible data loss down to 1 sec. this lets you set up warm standby with nothing more than a postgresql superuser access to master (assuming right defaults in postgresql conf). -- ------- Hannu Krosing PostgreSQL Infinite Scalability and Preformance Consultant PG Admin Book: http://www.2ndQuadrant.com/books/
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