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Re: XLogInsert scaling, revisited

Fujii Masao <masao.fujii@gmail.com>

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From: Fujii Masao <masao.fujii@gmail.com>
To: Heikki Linnakangas <hlinnakangas@vmware.com>
Cc: Andres Freund <andres@2ndquadrant.com>, Jeff Janes <jeff.janes@gmail.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2013-07-15T17:24:06Z
Lists: pgsql-hackers 
On Mon, Jul 8, 2013 at 6:16 PM, Heikki Linnakangas
<hlinnakangas@vmware.com> wrote:
> Ok, I've committed this patch now. Finally, phew!

I found that this patch causes the assertion failure. When I set up simple
replication environment and promoted the standby before executing any
transaction on the master, I got the following assertion failure.

2013-07-16 02:22:06 JST sby1 LOG:  received promote request
2013-07-16 02:22:06 JST sby1 FATAL:  terminating walreceiver process
due to administrator command
2013-07-16 02:22:06 JST sby1 LOG:  redo done at 0/20000F0
2013-07-16 02:22:06 JST sby1 LOG:  selected new timeline ID: 2
hrk:head-pgsql postgres$ 2013-07-16 02:22:06 JST sby1 LOG:  archive
recovery complete
TRAP: FailedAssertion("!(readOff == (XLogCtl->xlblocks[firstIdx] -
8192) % ((uint32) (16 * 1024 * 1024)))", File: "xlog.c", Line: 7048)
2013-07-16 02:22:12 JST sby1 LOG:  startup process (PID 37115) was
terminated by signal 6: Abort trap
2013-07-16 02:22:12 JST sby1 LOG:  terminating any other active server processes

Regards,

-- 
Fujii Masao