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author | Teodor Sigaev <teodor@sigaev.ru> | 2018-03-30 14:23:17 +0300 |
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committer | Teodor Sigaev <teodor@sigaev.ru> | 2018-03-30 14:23:17 +0300 |
commit | 43d1ed60fdd96027f044e152176c0d45cd6bf443 (patch) | |
tree | b5efc150a6cfa4d5edbc5ecbc828850097d0201f /src/include/postgres_fe.h | |
parent | 019fa576ca8298ecb7b8ded6e0c857840b57a4ae (diff) | |
download | postgresql-43d1ed60fdd96027f044e152176c0d45cd6bf443.tar.gz postgresql-43d1ed60fdd96027f044e152176c0d45cd6bf443.zip |
Predicate locking in GIN index
Predicate locks are used on per page basis only if fastupdate = off, in
opposite case predicate lock on pending list will effectively lock whole index,
to reduce locking overhead, just lock a relation. Entry and posting trees are
essentially B-tree, so locks are acquired on leaf pages only.
Author: Shubham Barai with some editorization by me and Dmitry Ivanov
Review by: Alexander Korotkov, Dmitry Ivanov, Fedor Sigaev
Discussion: https://www.postgresql.org/message-id/flat/CALxAEPt5sWW+EwTaKUGFL5_XFcZ0MuGBcyJ70oqbWqr42YKR8Q@mail.gmail.com
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