Re: Streaming replication and non-blocking I/O - Mailing list pgsql-hackers

From Fujii Masao
Subject Re: Streaming replication and non-blocking I/O
Date
Msg-id 3f0b79eb0912142207s30c7176fnb4b7553e7f07100e@mail.gmail.com
Whole thread Raw
In response to Re: Streaming replication and non-blocking I/O  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Streaming replication and non-blocking I/O  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
List pgsql-hackers
On Tue, Dec 15, 2009 at 4:11 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Hm.  Perhaps it should be a loadable plugin and not hard-linked into the
> backend?  Compare dblink.

You mean that such plugin is supplied in shared_preload_libraries,
a new process is forked and the shared-memory related to walreceiver
is created by using shmem_startup_hook? Since this approach would
solve the problem discussed previously, ISTM this makes sense.
http://archives.postgresql.org/pgsql-hackers/2009-11/msg00031.php

Some additional code might be required to control the termination
of walreceiver.

Regards,

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


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