Re: Hot Standby 0.2.1

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Hot Standby 0.2.1
Date: 2009-09-27 12:35:08
Message-ID: 4ABF5BFC.1060705@enterprisedb.com
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TransactionIdIsInProgress() doesn't consult the known-assigned-xids
structure. That's a problem: in the standby, TransactionIdIsInProgress()
can return false for a transaction that is still running in the master.
HeapTupleSatisfies* functions can incorrectly set HEAP_XMIN/XMAX_INVALID
hint bits for xids that commit later on.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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