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base repository: postgresql-cfbot/postgresql
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compare: cf/5448
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  • 3 commits
  • 8 files changed
  • 3 contributors

Commits on Apr 2, 2025

  1. Remove HeapBitmapScan's skip_fetch optimization 

    The optimization doesn't take concurrent vacuum's removal of TIDs into
account, which can remove dead TIDs and make ALL_VISIBLE pages for which
we have pointers to those dead TIDs in the bitmap.

The optimization itself isn't impossible, but would require more work
figuring out that vacuum started removing TIDs and then stop using the
optimization. However, we currently don't have such a system in place,
making the optimization unsound to keep around.

Reported-By: Konstantin Knizhnik <[email protected]>
Backpatch-through: 13
    @MMeent
    MMeent authored and Commitfest Bot committed Apr 2, 2025
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  2. isolationtester showing broken index-only bitmap heap scan

    @anarazel
    anarazel authored and Commitfest Bot committed Apr 2, 2025
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  3. [CF 5448] v6 - Incorrect result of bitmap heap scan. 

    This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5448

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/CAEze2Wg3gXXZTr6_rwC+s4-o2ZVFB5F985uUSgJTsECx6AmGcQ@mail.gmail.com
Author(s): Matthias van de Meent
    Commitfest Bot committed Apr 2, 2025
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    e607268 View commit details
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