On 27th of July 2019, Michael Paquier committed patch:
Add support for --jobs in reindexdb
When doing a schema-level or a database-level operation, a list of
relations to build is created which gets processed in parallel using
multiple connections, based on the recent refactoring for parallel slots
in src/bin/scripts/. System catalogs are processed first in a
serialized fashion to prevent deadlocks, followed by the rest done in
This new option is not compatible with --system as reindexing system
catalogs in parallel can lead to deadlocks, and with --index as there is
no conflict handling for indexes rebuilt in parallel depending in the
Author: Julien Rouhaud
Continue reading Waiting for PostgreSQL 13 – Add support for –jobs in reindexdb
On 4th of April 2019, Robert Haas committed patch:
Allow VACUUM to be run with index cleanup disabled.
This commit adds a new reloption, vacuum_index_cleanup, which
controls whether index cleanup is performed for a particular
relation by default. It also adds a new option to the VACUUM
command, INDEX_CLEANUP, which can be used to override the
reloption. If neither the reloption nor the VACUUM option is
used, the default is true, as before.
Masahiko Sawada, reviewed and tested by Nathan Bossart, Alvaro
Herrera, Kyotaro Horiguchi, Darafei Praliaskouski, and me.
The wording of the documentation is mostly due to me.
Continue reading Waiting for PostgreSQL 12 – Allow VACUUM to be run with index cleanup disabled.
On 2nd of September, Teodor Sigaev committed patch:
Allow usage of huge maintenance_work_mem for GIN build.
Currently, in-memory posting list during GIN build process is limited 1GB
because of using repalloc. The patch replaces call of repalloc to repalloc_huge.
It increases limit of posting list from 180 millions
(1GB / sizeof(ItemPointerData)) to 4 billions limited by maxcount/count fields
in GinEntryAccumulator and subsequent calls. Check added.
Also, fix accounting of allocatedMemory during build to prevent integer
overflow with maintenance_work_mem > 4GB.
Robert Abraham <email@example.com> with additions by me
Continue reading Waiting for 9.6 – Allow usage of huge maintenance_work_mem for GIN build.
Some time ago Josh Berkus wrote about possible changes in VACUUM FULL.
Now these changes came to life. By now, I mean 6th of January, when Takahiro Itagaki committed his patch:
Support rewritten-based full vacuum as VACUUM FULL. Traditional
VACUUM FULL was renamed to VACUUM FULL INPLACE. Also added a new
option -i, --inplace for vacuumdb to perform FULL INPLACE vacuuming.
Since the new VACUUM FULL uses CLUSTER infrastructure, we cannot
use it for system tables. VACUUM FULL for system tables always
fall back into VACUUM FULL INPLACE silently.
Itagaki Takahiro, reviewed by Jeff Davis and Simon Riggs.
Continue reading Waiting for 8.5 – VACUUM FULL change