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

is cachedFetchXid ever invalidated?

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: is cachedFetchXid ever invalidated?
Date: 2010-12-02 01:48:36
Message-ID: 1291254516.23262.65.camel@jdavis-ux.asterdata.local (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
I can't see any place that "cachedFetchXid" is ever invalidated.
Shouldn't it be invalidated before transaction ID wraparound?

It's difficult to construct a test case to show whether this is a
problem or not, but I couldn't find how this is solved in the code. My
understanding is that, before truncating the clog, we need to make sure
that there are no references to any transaction IDs that would be cut

	Jeff Davis


pgsql-hackers by date

Next:From: ghatpandeDate: 2010-12-02 02:11:18
Subject: Re: Proposal: First step towards Intelligent, integrateddatabase
Previous:From: Craig RingerDate: 2010-12-02 01:02:16
Subject: Re: [HACKERS] Improved JDBC driver part 2

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group