Teach TID store to skip bitmap for small numbers of offsets The header portion of BlocktableEntry has enough padding space for an array of 3 offsets (1 on 32-bit platforms). Use this space instead of having a sparse bitmap array. This will take up a constant amount of space no matter what the offsets are.
Reviewed (in an earlier version) by Masahiko Sawada Discussion: https://postgr.es/m/CANWCAZYw+_KAaUNruhJfE=h6wgtbkedg32st8vbjbey82bg...@mail.gmail.com Discussion: https://postgr.es/m/cad21aobci3hujzijubomo1tdwh3xtq9f89ctnq4bsqijomq...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/f35bd9bf359d3d740063997e1cbab9b69df7af99 Modified Files -------------- src/backend/access/common/tidstore.c | 129 +++++++++++++++------ .../test_tidstore/expected/test_tidstore.out | 28 +++++ .../modules/test_tidstore/sql/test_tidstore.sql | 10 ++ 3 files changed, 130 insertions(+), 37 deletions(-)
