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Support adding partitioned tables to publication

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When a partitioned table is added to a publication, changes of all of
its partitions (current or future) are published via that publication.

This change only affects which tables a publication considers as its
members.  The receiving side still sees the data coming from the
individual leaf partitions.  So existing restrictions that partition
hierarchies can only be replicated one-to-one are not changed by this.

Author: Amit Langote <amitlangote09@gmail.com>
Reviewed-by: Rafia Sabih <rafia.pghackers@gmail.com>
Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+HiwqH=Y85vRK3mOdjEkqFK+E=ST=eQiHdpj43L=_eJMOOznQ@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2020-03-10 08:42:59 +01:00
parent 61d7c7bce3
commit 17b9e7f9fe
11 changed files with 382 additions and 44 deletions
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23
src/backend/commands/publicationcmds.c
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@ -299,7 +299,13 @@ AlterPublicationOptions(AlterPublicationStmt *stmt, Relation rel,
}
else
{
List *relids = GetPublicationRelations(pubform->oid);
/*
* For any partitioned tables contained in the publication, we must
* invalidate all partitions contained in the respective partition
* trees, not just those explicitly mentioned in the publication.
*/
List *relids = GetPublicationRelations(pubform->oid,
PUBLICATION_PART_ALL);
/*
* We don't want to send too many individual messages, at some point
@ -356,7 +362,8 @@ AlterPublicationTables(AlterPublicationStmt *stmt, Relation rel,
PublicationDropTables(pubid, rels, false);
else /* DEFELEM_SET */
{
List *oldrelids = GetPublicationRelations(pubid);
List *oldrelids = GetPublicationRelations(pubid,
PUBLICATION_PART_ROOT);
List *delrels = NIL;
ListCell *oldlc;
@ -498,7 +505,8 @@ RemovePublicationRelById(Oid proid)
/*
* Open relations specified by a RangeVar list.
* The returned tables are locked in ShareUpdateExclusiveLock mode.
* The returned tables are locked in ShareUpdateExclusiveLock mode in order to
* add them to a publication.
*/
static List *
OpenTableList(List *tables)
@ -539,8 +547,13 @@ OpenTableList(List *tables)
rels = lappend(rels, rel);
relids = lappend_oid(relids, myrelid);
/* Add children of this rel, if requested */
if (recurse)
/*
* Add children of this rel, if requested, so that they too are added
* to the publication. A partitioned table can't have any inheritance
* children other than its partitions, which need not be explicitly
* added to the publication.
*/
if (recurse && rel->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
{
List *children;
ListCell *child;