postgres

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Heikki Linnakangas 9155580fd5 Generate less WAL during GiST, GIN and SP-GiST index build. Instead of WAL-logging every modification during the build separately, first build the index without any WAL-logging, and make a separate pass through the index at the end, to write all pages to the WAL. This significantly reduces the amount of WAL generated, and is usually also faster, despite the extra I/O needed for the extra scan through the index. WAL generated this way is also faster to replay. For GiST, the LSN-NSN interlock makes this a little tricky. All pages must be marked with a valid (i.e. non-zero) LSN, so that the parent-child LSN-NSN interlock works correctly. We now use magic value 1 for that during index build. Change the fake LSN counter to begin from 1000, so that 1 is safely smaller than any real or fake LSN. 2 would've been enough for our purposes, but let's reserve a bigger range, in case we need more special values in the future. Author: Anastasia Lubennikova, Andrey V. Lepikhov Reviewed-by: Heikki Linnakangas, Dmitry Dolgov		6 years ago
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brin	Report progress of CREATE INDEX operations	6 years ago
common	Generated columns	6 years ago
gin	Generate less WAL during GiST, GIN and SP-GiST index build.	6 years ago
gist	Generate less WAL during GiST, GIN and SP-GiST index build.	6 years ago
hash	Report progress of CREATE INDEX operations	6 years ago
heap	Correctly initialize newly added struct member	6 years ago
index	Compute XID horizon for page level index vacuum on primary.	6 years ago
nbtree	Report progress of CREATE INDEX operations	6 years ago
rmgrdesc	Generate less WAL during GiST, GIN and SP-GiST index build.	6 years ago
spgist	Generate less WAL during GiST, GIN and SP-GiST index build.	6 years ago
table	tableam: bitmap table scan.	6 years ago
tablesample	tableam: sample scan.	6 years ago
transam	Generate less WAL during GiST, GIN and SP-GiST index build.	6 years ago
Makefile	Introduce access/{table.h, relation.h}, for generic functions from heapam.h.	7 years ago