Horton

Re: fixing old_snapshot_threshold's time->xid mapping

Hamid Akhtar <hamid.akhtar@gmail.com>

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From: Hamid Akhtar <hamid.akhtar@gmail.com>
To: pgsql-hackers@lists.postgresql.org
Cc: Robert Haas <robertmhaas@gmail.com>, Thomas Munro <thomas.munro@gmail.com>
Date: 2020-09-24T13:14:28Z
Lists: pgsql-hackers 
The following review has been posted through the commitfest application:
make installcheck-world:  tested, passed
Implements feature:       not tested
Spec compliant:           not tested
Documentation:            not tested

Patch looks good to me.

Commits

  1. Remove the "snapshot too old" feature.

  2. Fix two bugs in MaintainOldSnapshotTimeMapping.

  3. Add new 'old_snapshot' contrib module.

  4. Expose oldSnapshotControl definition via new header.