You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Robert Haas 620b49a16d hash: Increase the number of possible overflow bitmaps by 8x. ... Per a report from AP, it's not that hard to exhaust the supply of bitmap pages if you create a table with a hash index and then insert a few billion rows - and then you start getting errors when you try to insert additional rows. In the particular case reported by AP, there's another fix that we can make to improve recycling of overflow pages, which is another way to avoid the error, but there may be other cases where this problem happens and that fix won't help. So let's buy ourselves as much headroom as we can without rearchitecting anything. The comments claim that the old limit was 64GB, but it was really only 32GB, because we didn't use all the bits in the page for bitmap bits - only the largest power of 2 that could fit after deducting space for the page header and so forth. Thus, we have 4kB per page for bitmap bits, not 8kB. The new limit is thus actually 8 times the old *real* limit but only 4 times the old *purported* limit. Since this breaks on-disk compatibility, bump HASH_VERSION. We've already done this earlier in this release cycle, so this doesn't cause any incremental inconvenience for people using pg_upgrade from releases prior to v10. However, users who use pg_upgrade to reach 10beta3 or later from 10beta2 or earlier will need to REINDEX any hash indexes again. Amit Kapila and Robert Haas Discussion: http://postgr.es/m/20170704105728.mwb72jebfmok2nm2@zip.com.au		8 years ago
..
expected	hash: Increase the number of possible overflow bitmaps by 8x.	8 years ago
sql	pageinspect: Add bt_page_items function with bytea argument	9 years ago
.gitignore	pageinspect: Add tests	9 years ago
Makefile	pageinspect: Support hash indexes.	9 years ago
brinfuncs.c	Phase 3 of pgindent updates.	8 years ago
btreefuncs.c	Phase 3 of pgindent updates.	8 years ago
fsmfuncs.c	In pageinspect/hashfuncs.c, avoid crashes on alignment-picky machines.	9 years ago
ginfuncs.c	Phase 3 of pgindent updates.	8 years ago
hashfuncs.c	Phase 3 of pgindent updates.	8 years ago
heapfuncs.c	Phase 3 of pgindent updates.	8 years ago
pageinspect--1.0--1.1.sql	Fix typos in some error messages thrown by extension scripts when fed to psql.	11 years ago
pageinspect--1.1--1.2.sql	Fix typos in some error messages thrown by extension scripts when fed to psql.	11 years ago
pageinspect--1.2--1.3.sql	pageinspect/BRIN: minor tweaks	11 years ago
pageinspect--1.3--1.4.sql	Add forgotten file in commit d6061f83a1	10 years ago
pageinspect--1.4--1.5.sql	Update pageinspect extension for parallel query.	9 years ago
pageinspect--1.5--1.6.sql	pageinspect: Add bt_page_items function with bytea argument	9 years ago
pageinspect--1.5.sql	Update pageinspect extension for parallel query.	9 years ago
pageinspect--unpackaged--1.0.sql	Fix typos in some error messages thrown by extension scripts when fed to psql.	11 years ago
pageinspect.control	pageinspect: Support hash indexes.	9 years ago
pageinspect.h	Phase 2 of pgindent updates.	8 years ago
rawpage.c	Phase 3 of pgindent updates.	8 years ago