>>> "Koichi Suzuki" <[EMAIL PROTECTED]> wrote: 
> As Heikki pointed out, the issue is not to decompress the compressed
> WAL, but also how we can keep archive log still compressed after it
is
> handled by pg_standby.
> 
> I'm afraid pg_standby cannot handle this solely, may need some
support
> by the pg core.   For example, after closing archive log in archive
> recovery, pg_core can call some backend to re-compress the archive
log
> for later use.
 
Why decompress and re-compress?  We're using simple bash scripts, so I
can't speak to pg_standby; but we just pipe the file through gunzip in
the script called by recovery.conf.  The source file isn't modified --
it stays compressed for archiving.
 
-Kevin

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