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doc: PG 14 relnotes, mention CONCURRENTLY improvements

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Add items for vacuum not having to wait for CONCURRENTLY, and
CONCURRENTLY not having to wait for other CONCURRENTLY operations.

Reported-by: Simon Riggs

Discussion: https://postgr.es/m/CANbhV-EMM4nf7Ys-Yae_kY25dXT_3eiOXke2+yw44jgy+4jNsA@mail.gmail.com

Backpatch-through: 14 only
This commit is contained in:
Bruce Momjian 2021-07-02 14:46:31 -04:00
parent a3a681f859
commit 56d467a07d
1 changed files with 39 additions and 0 deletions
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39
doc/src/sgml/release-14.sgml
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@ -744,6 +744,28 @@ Author: Peter Geoghegan <pg@bowt.ie>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-11-25 [c98763bf5] Avoid spurious waits in concurrent indexing
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2021-01-15 [f9900df5f] Avoid spurious wait in concurrent reindex
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2021-02-23 [d9d076222] VACUUM: ignore indexing operations with CONCURRENTLY
-->
<para>
Allow vacuum to be more aggressive in removing dead rows during
minimal-locking index operations (Álvaro Herrera)
</para>
<para>
Specifically, <command>CREATE INDEX CONCURRENTLY</command> and
<command>REINDEX CONCURRENTLY</command> no longer limit the dead
row removal of other relations.
</para>
</listitem>
<listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-12-08 [e2ac3fed3] Speed up rechecking if relation needs to be vacuumed or
-->
@ -2283,6 +2305,23 @@ Author: Michael Paquier <michael@paquier.xyz>
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-11-25 [c98763bf5] Avoid spurious waits in concurrent indexing
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2021-01-15 [f9900df5f] Avoid spurious wait in concurrent reindex
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2021-02-23 [d9d076222] VACUUM: ignore indexing operations with CONCURRENTLY
-->
<para>
Allow index commands using <command>CONCURRENTLY</command> to
avoid waiting for the completion of other operations using
<command>CONCURRENTLY</command> (Álvaro Herrera)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>