Re: Minimal logical decoding on standbys

Alvaro Herrera <alvherre@2ndquadrant.com>

From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Amit Khandekar <amitdkhan.pg@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Robert Haas <robertmhaas@gmail.com>, tushar <tushar.ahuja@enterprisedb.com>, Petr Jelinek <petr.jelinek@2ndquadrant.com>, Craig Ringer <craig@2ndquadrant.com>, Petr Jelinek <petr@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, Shaun Thomas <shaun.thomas@2ndquadrant.com>
Date: 2019-09-03T17:40:14Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  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 2019-Jul-19, Amit Khandekar wrote:

> Attached are the split patches. Included is an additional patch that
> has doc changes. Here is what I have added in the docs. Pasting it
> here so that all can easily spot how it is supposed to behave, and to
> confirm that we are all on the same page :

... Apparently, this patch was not added to the commitfest for some
reason; and another patch that *is* in the commitfest has been said to
depend on this one (Petr's https://commitfest.postgresql.org/24/1961/
which hasn't been updated in quite a while and has received no feedback
at all, not even from the listed reviewer Shaun Thomas).  To make
matters worse, Amit's patchset no longer applies.

What I would like to do is add a link to this thread to CF's 1961 entry
and then update all these patches, in order to get things moving.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services