diff options
| author | Amit Kapila <akapila@postgresql.org> | 2020-01-15 07:24:14 +0530 |
|---|---|---|
| committer | Amit Kapila <akapila@postgresql.org> | 2020-01-15 07:24:14 +0530 |
| commit | 4d8a8d0c738410ec02aab46b1ebe1835365ad384 (patch) | |
| tree | c45a296dd51387d6169be7845c76d3033818efd4 /doc/src | |
| parent | fe233366f2e3ca44609c805ce0604c1e2122c3f9 (diff) | |
Introduce IndexAM fields for parallel vacuum.
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
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/indexam.sgml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/src/sgml/indexam.sgml b/doc/src/sgml/indexam.sgml index dd54c688024..37f8d8760a3 100644 --- a/doc/src/sgml/indexam.sgml +++ b/doc/src/sgml/indexam.sgml @@ -122,6 +122,10 @@ 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 */ + uint8 amparallelvacuumoptions; /* type of data stored in index, or InvalidOid if variable */ Oid amkeytype; |