vacuumlazy.c: document vistest and OldestXmin.
Explain the relationship between vacuumlazy.c's vistest and OldestXmin
cutoffs. These closely related cutoffs are different in subtle but
important ways. Also document a closely related rule: we must establish
rel_pages _after_ OldestXmin to ensure
vacuumlazy.c: Standardize rel_pages terminology.
VACUUM's rel_pages field indicates the size of the target heap rel just
after the table_relation_vacuum() operation began. There are specific
expectations around how rel_pages can be related to other nearby state.
In particular, the range of rel_pa
Set synchronous_commit=on in test_setup.sql.
Starting in cc50080a82 create_index test fails when run with
synchronous_commit=off. synchronous_commit=off delays when hint bits may be
set. Some plans change depending on the number of all-visible pages, which in
turn can be influenced by the delayed
Force track_io_timing off in explain.sql to avoid failures when enabled.
Discussion:
https://postgr.es/m/20201029231037.rkxo57ugnuchy...@alap3.anarazel.de
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/7e12256b478b89518ff410f29192af21de37d070
Modified Files
-
