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| author | Robert Haas <rhaas@postgresql.org> | 2016-11-08 10:47:52 -0500 |
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| committer | Robert Haas <rhaas@postgresql.org> | 2016-11-08 10:52:51 -0500 |
| commit | f0e72a25b05d4c29d0102fa0b892782ff193a00e (patch) | |
| tree | 196f60f07cd095f5a0f2dc4fea5c797d2ab357f8 /src/backend/utils/adt/xml.c | |
| parent | 650b96707672599e290c982dd63e3a896dbbaba6 (diff) | |
| download | postgresql-f0e72a25b05d4c29d0102fa0b892782ff193a00e.tar.gz postgresql-f0e72a25b05d4c29d0102fa0b892782ff193a00e.zip | |
Improve handling of dead tuples in hash indexes.
When squeezing a bucket during vacuum, it's not necessary to retain
any tuples already marked as dead, so ignore them when deciding which
tuples must be moved in order to empty a bucket page. Similarly, when
splitting a bucket, relocating dead tuples to the new bucket is a
waste of effort; instead, just ignore them.
Amit Kapila, reviewed by me. Testing help provided by Ashutosh
Sharma.
Diffstat (limited to 'src/backend/utils/adt/xml.c')
0 files changed, 0 insertions, 0 deletions