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Add optional pid parameter to pg_replication_origin_session_setup().

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Commit 216a784829 introduced parallel apply workers, allowing multiple
processes to share a replication origin. To support this,
replorigin_session_setup() was extended to accept a pid argument
identifying the process using the origin.

This commit exposes that capability through the SQL interface function
pg_replication_origin_session_setup() by adding an optional pid parameter.
This enables multiple processes to coordinate replication using the same
origin when using SQL-level replication functions.

This change allows the non-builtin logical replication solutions to
implement parallel apply for large transactions.

Additionally, an existing internal error was made user-facing, as it can
now be triggered via the exposed SQL API.

Author: Doruk Yilmaz <doruk@mixrank.com>
Author: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Euler Taveira <euler@eulerto.com>
Discussion: https://postgr.es/m/CAMPB6wfe4zLjJL8jiZV5kjjpwBM2=rTRme0UCL7Ra4L8MTVdOg@mail.gmail.com
Discussion: https://postgr.es/m/CAE2gYzyTSNvHY1+iWUwykaLETSuAZsCWyryokjP6rG46ZvRgQA@mail.gmail.com
This commit is contained in:
Amit Kapila
2025-09-19 05:38:40 +00:00
parent 8aac5923a3
commit 5b148706c5
11 changed files with 193 additions and 10 deletions
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3
contrib/test_decoding/sql/replorigin.sql
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@@ -26,6 +26,9 @@ SELECT pg_replication_origin_create('regress_test_decoding: regression_slot');
-- ensure duplicate creations fail
SELECT pg_replication_origin_create('regress_test_decoding: regression_slot');
-- ensure inactive origin cannot be set as session one if pid is specified
SELECT pg_replication_origin_session_setup('regress_test_decoding: regression_slot', -1);
--ensure deletions work (once)
SELECT pg_replication_origin_create('regress_test_decoding: temp');
SELECT pg_replication_origin_drop('regress_test_decoding: temp');