tableam: Avoid relying on relation size to determine validity of tids. Instead add a tableam callback to do so. To avoid adding per validation overhead, pass a scan to tuple_tid_valid. In heap's case we'd otherwise incurred a RelationGetNumberOfBlocks() call for each tid - which'd have added noticable overhead to nodeTidscan.c. Author: Andres Freund Reviewed-By: Ashwin Agrawal Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/147e3722f7e531f15ba389a4d518efe8cd0bd736 Modified Files -------------- src/backend/access/heap/heapam.c | 26 ++++-------- src/backend/access/heap/heapam_handler.c | 10 +++++ src/backend/access/table/tableam.c | 27 ++++++++++++ src/backend/executor/nodeTidscan.c | 73 +++++++++++++++++++++----------- src/backend/utils/adt/tid.c | 10 ++++- src/include/access/heapam.h | 3 +- src/include/access/tableam.h | 37 +++++++++++----- 7 files changed, 129 insertions(+), 57 deletions(-)
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