Horton

Re: Minimal logical decoding on standbys

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: "Drouvot, Bertrand" <bertranddrouvot.pg@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Alvaro Herrera <alvherre@2ndquadrant.com>, Ibrar Ahmed <ibrar.ahmad@gmail.com>, Amit Khandekar <amitdkhan.pg@gmail.com>, fabriziomello@gmail.com, tushar <tushar.ahuja@enterprisedb.com>, Rahila Syed <rahila.syed@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2022-12-16T16:38:33Z
Lists: pgsql-hackers

Commits

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  1. Reduce the log level in 035_standby_logical_decoding.pl.

  2. 035_standby_logical_decoding: Add missing waits for replication

  3. For cascading replication, wake physical and logical walsenders separately

  4. Handle logical slot conflicts on standby

  5. Support invalidating replication slots due to horizon and wal_level

  6. Prevent use of invalidated logical slot in CreateDecodingContext()

  7. Replace replication slot's invalidated_at LSN with an enum

  8. Pass down table relation into more index relation functions

  9. Assert only valid flag bits are passed to visibilitymap_set()

  10. Remove unused _bt_delitems_delete() argument.

  11. Add xl_btree_delete optimization.

On Fri, Dec 16, 2022 at 10:08 AM Drouvot, Bertrand
<bertranddrouvot.pg@gmail.com> wrote:
> > After 1489b1ce728 the name mayConflictInLogicalDecoding seems odd. Seems
> > it should be a riff on snapshotConflictHorizon?
>
> Gotcha, what about logicalSnapshotConflictThreat?

logicalConflictPossible? checkDecodingConflict?

I think we should try to keep this to three words if we can. There's
not likely to be enough value in a fourth word to make up for the
downside of being more verbose.

-- 
Robert Haas
EDB: http://www.enterprisedb.com