Re: BUG #15142: ERROR: MultiXactId nnnnn has not been created yet -- apparent wraparound in v9.5

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: molofeev <molofeev3(at)gmail(dot)com>
Cc: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #15142: ERROR: MultiXactId nnnnn has not been created yet -- apparent wraparound in v9.5
Date: 2018-04-04 15:50:16
Message-ID: 20180404155016.ylskrkq4toczkk3u@alvherre.pgsql
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molofeev wrote:
> Query 1:  select * from heap_page_items(get_raw_page('tablename',3220145));

In this one, t_infomask is 11011 for all the tuples, which is 0x2B03.
HEAP_XMAX_IS_MULTI is 0x1000. I think you're looking at the wrong
pages, probably because of synchronized_seqscans.

I didn't look at the other pages.

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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