Horton

Re: [Proposal] Fully WAL logged CREATE DATABASE - No Checkpoints

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>, Dilip Kumar <dilipbalaut@gmail.com>, Andres Freund <andres@anarazel.de>, Ashutosh Sharma <ashu.coek88@gmail.com>, Maciek Sakrejda <m.sakrejda@gmail.com>, Bruce Momjian <bruce@momjian.us>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Andrew Dunstan <andrew@dunslane.net>, Heikki Linnakangas <hlinnaka@iki.fi>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2022-08-02T21:46:34Z
Lists: pgsql-hackers 
Robert Haas <robertmhaas@gmail.com> writes:
> WARNING:  problem in alloc set PortalContext: req size > alloc size
> for chunk 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad size 0 for chunk
> 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad single-chunk
> 0x7f9950891208 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: found inconsistent
> memory block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: req size > alloc size
> for chunk 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad size 0 for chunk
> 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad single-chunk
> 0x7f9950891208 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: found inconsistent
> memory block 0x7f9950890800

This looks like nothing so much as the fallout from something scribbling
past the end of an allocated palloc chunk, or perhaps writing on
already-freed space.  Perhaps running the test case under valgrind
would help to finger the culprit.

			regards, tom lane

Commits

  1. When using the WAL-logged CREATE DATABASE strategy, bulk extend.

  2. Avoid using a fake relcache entry to own an SmgrRelation.

  3. Fix data-corruption hazard in WAL-logged CREATE DATABASE.

  4. initdb: When running CREATE DATABASE, use STRATEGY = WAL_COPY.

  5. Simplify a needlessly-complicated regular expression.

  6. In 020_createdb.pl, change order of command-line arguments.

  7. Add new block-by-block strategy for CREATE DATABASE.

  8. Fix replay of create database records on standby

  9. Refactor code for reading and writing relation map files.

  10. Replace RelationOpenSmgr() with RelationGetSmgr().

  11. Refactor the fsync queue for wider use.