Horton

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

Michael Paquier <michael.paquier@gmail.com>

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From: Michael Paquier <michael.paquier@gmail.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Andres Freund <andres@anarazel.de>, "Wood, Dan" <hexpert@amazon.com>, Peter Geoghegan <pg@bowt.ie>, pgsql-committers@postgresql.org, "Wong, Yi Wen" <yiwong@amazon.com>, Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org
Date: 2017-12-23T23:48:40Z
Lists: pgsql-hackers 
On Sat, Dec 23, 2017 at 05:26:22PM -0300, Alvaro Herrera wrote:
> I noticed that I'm committer for this patch in the commitfest, though I
> don't remember setting that.  Are you expecting me to commit it?  I
> thought you'd do it, but if you want me to assume the responsibility I
> can do that.

I tend to create CF entries for all patches that we need to track as bug
fixes. No things lost this way. Alvaro, you have been marked as a committer
of this patch as you were the one to work and push the first version that
has finished reverted.
--
Michael

Commits

  1. Backport addition of rs_old_rel to rewriteheap's state.

  2. Perform a lot more sanity checks when freezing tuples.

  3. Revert bogus fixes of HOT-freezing bug

  4. Fix traversal of half-frozen update chains

  5. Fix freezing of a dead HOT-updated tuple

  6. During index build, check and elog (not just Assert) for broken HOT chain.

  7. Fix WAL replay of locking an updated tuple

  8. Change the way we mark tuples as frozen.