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Introduce IndexAM fields for parallel vacuum.

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Introduce new fields amusemaintenanceworkmem and amparallelvacuumoptions
in IndexAmRoutine for parallel vacuum.  The amusemaintenanceworkmem tells
whether a particular IndexAM uses maintenance_work_mem or not.  This will
help in controlling the memory used by individual workers as otherwise,
each worker can consume memory equal to maintenance_work_mem.  The
amparallelvacuumoptions tell whether a particular IndexAM participates in
a parallel vacuum and if so in which phase (bulkdelete, vacuumcleanup) of
vacuum.

Author: Masahiko Sawada and Amit Kapila
Reviewed-by: Dilip Kumar, Amit Kapila, Tomas Vondra and Robert Haas
Discussion:
https://postgr.es/m/CAD21AoDTPMgzSkV4E3SFo1CH_x50bf5PqZFQf4jmqjk-C03BWg@mail.gmail.com
https://postgr.es/m/CAA4eK1LmcD5aPogzwim5Nn58Ki+74a6Edghx4Wd8hAskvHaq5A@mail.gmail.com
This commit is contained in:
Amit Kapila
2020-01-15 07:24:14 +05:30
parent fe233366f2
commit 4d8a8d0c73
11 changed files with 75 additions and 0 deletions
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4
src/include/access/amapi.h
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@@ -197,6 +197,10 @@ typedef struct IndexAmRoutine
bool amcanparallel;
/* does AM support columns included with clause INCLUDE? */
bool amcaninclude;
/* does AM use maintenance_work_mem? */
bool amusemaintenanceworkmem;
/* OR of parallel vacuum flags. See vacuum.h for flags. */
uint8 amparallelvacuumoptions;
/* type of data stored in index, or InvalidOid if variable */
Oid amkeytype;