Re: [HACKERS] [COMMITTERS] pgsql: Fix freezing of a dead HOT-updated tuple

Peter Geoghegan wrote:
> On Thu, Sep 28, 2017 at 7:47 AM, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> > Fix freezing of a dead HOT-updated tuple
> 
> If I run Dan Wood's test case again, the obvious symptom (spurious
> duplicates) goes away. However, the enhanced amcheck, and thus CREATE
> INDEX/REINDEX, still isn't happy about this:
> 
> postgres=# select bt_index_check('t_pkey', true);
> DEBUG:  00000: verifying presence of required tuples in index "t_pkey"
> LOCATION:  bt_check_every_level, verify_nbtree.c:424
> ERROR:  XX000: failed to find parent tuple for heap-only tuple at
> (0,6) in table "t"
> LOCATION:  IndexBuildHeapRangeScan, index.c:2597
> Time: 3.699 ms

... Rats, I obviously missed the message where you said that amcheck
detected this problem.

Odd that it's not fixed.  I guess there's still some more work to do
here ...

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


-- 
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers