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Amit Kapila 3fa17d3771 Use HTAB for replication slot statistics. ... Previously, we used to use the array of size max_replication_slots to store stats for replication slots. But that had two problems in the cases where a message for dropping a slot gets lost: 1) the stats for the new slot are not recorded if the array is full and 2) writing beyond the end of the array if the user reduces the max_replication_slots. This commit uses HTAB for replication slot statistics, resolving both problems. Now, pgstat_vacuum_stat() search for all the dead replication slots in stats hashtable and tell the collector to remove them. To avoid showing the stats for the already-dropped slots, pg_stat_replication_slots view searches slot stats by the slot name taken from pg_replication_slots. Also, we send a message for creating a slot at slot creation, initializing the stats. This reduces the possibility that the stats are accumulated into the old slot stats when a message for dropping a slot gets lost. Reported-by: Andres Freund Author: Sawada Masahiko, test case by Vignesh C Reviewed-by: Amit Kapila, Vignesh C, Dilip Kumar Discussion: https://postgr.es/m/20210319185247.ldebgpdaxsowiflw@alap3.anarazel.de		5 years ago
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backend	Use HTAB for replication slot statistics.	5 years ago
bin	psql: tab-complete ALTER ... DETACH CONCURRENTLY / FINALIZE	5 years ago
common	Factor out system call names from error messages	5 years ago
fe_utils	psql: Refine lexing of BEGIN...END blocks in CREATE FUNCTION statements	5 years ago
include	Use HTAB for replication slot statistics.	5 years ago
interfaces	Factor out system call names from error messages	5 years ago
makefiles	…
pl	Redesign the caching done by get_cached_rowtype().	5 years ago
port	Fix typos and grammar in comments and docs	5 years ago
template	Further tweaking of PG_SYSROOT heuristics for macOS.	5 years ago
test	Use HTAB for replication slot statistics.	5 years ago
timezone	Update time zone data files to tzdata release 2021a.	5 years ago
tools	Use HTAB for replication slot statistics.	5 years ago
tutorial	doc: Prefer explicit JOIN syntax over old implicit syntax in tutorial	5 years ago
.gitignore	…
DEVELOPERS	…
Makefile	Remove the option to build thread_test.c outside configure.	5 years ago
Makefile.global.in	Update Unicode data to CLDR 39	5 years ago
Makefile.shlib	Add PostgreSQL home page to --help output	6 years ago
nls-global.mk	Add errhint_plural() function and make use of it	5 years ago