Skip site navigation (1) Skip section navigation (2)

Re: Hot Standby query cancellation and Streaming Replication integration

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Hot Standby query cancellation and Streaming Replication integration
Date: 2010-03-03 00:22:00
Message-ID: 4B8DABA8.4010308@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 3/2/10 12:47 PM, Marc Munro wrote:
> To take it further still, if vacuum on the master could be prevented
> from touching records that are less than max_standby_delay seconds old,
> it would be safe to apply WAL from the very latest vacuum.  I guess HOT
> could be handled similarly though that may eliminate much of the
> advantage of HOT updates.

Aside from the inability to convert between transcation count and time,
isn't this what vacuum_defer_cleanup_age is supposed to do?  Or does it
not help with HOT updates?


--Josh Berkus

In response to

pgsql-hackers by date

Next:From: Andrew DunstanDate: 2010-03-03 00:23:39
Subject: Re: USE_LIBXSLT in MSVC builds
Previous:From: Bruce MomjianDate: 2010-03-02 23:54:28
Subject: Re: Avoiding bad prepared-statement plans.

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group