From 33e6c34c32677a168bee4bc6c335aa8d73211a56 Mon Sep 17 00:00:00 2001 From: Alvaro Herrera Date: Sat, 3 Nov 2018 13:23:37 -0300 Subject: [PATCH] Fix tablespace handling for partitioned indexes When creating partitioned indexes, the tablespace was not being saved for the parent index. This meant that subsequently created partitions would not use the right tablespace for their indexes. ALTER INDEX SET TABLESPACE and ALTER INDEX ALL IN TABLESPACE raised errors when tried; fix them too. This requires bespoke code for ATExecCmd() that applies to the special case when the tablespace move is just a catalog change. Discussion: https://postgr.es/m/20181102003138.uxpaca6qfxzskepi@alvherre.pgsql --- src/backend/catalog/heap.c | 10 +++- src/backend/commands/tablecmds.c | 60 +++++++++++++++++++++-- src/test/regress/input/tablespace.source | 10 ++++ src/test/regress/output/tablespace.source | 19 ++++++- 4 files changed, 94 insertions(+), 5 deletions(-) diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c index 8c52a1543d..61ce44830b 100644 --- a/src/backend/catalog/heap.c +++ b/src/backend/catalog/heap.c @@ -297,7 +297,6 @@ heap_create(const char *relname, case RELKIND_COMPOSITE_TYPE: case RELKIND_FOREIGN_TABLE: case RELKIND_PARTITIONED_TABLE: - case RELKIND_PARTITIONED_INDEX: create_storage = false; /* @@ -306,6 +305,15 @@ heap_create(const char *relname, */ reltablespace = InvalidOid; break; + + case RELKIND_PARTITIONED_INDEX: + /* + * Preserve tablespace so that it's used as tablespace for indexes + * on future partitions. + */ + create_storage = false; + break; + case RELKIND_SEQUENCE: create_storage = true; diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index 357c73073d..fdd22f4923 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -446,6 +446,7 @@ static bool ATPrepChangePersistence(Relation rel, bool toLogged); static void ATPrepSetTableSpace(AlteredTableInfo *tab, Relation rel, const char *tablespacename, LOCKMODE lockmode); static void ATExecSetTableSpace(Oid tableOid, Oid newTableSpace, LOCKMODE lockmode); +static void ATExecPartedIdxSetTableSpace(Relation rel, Oid newTableSpace); static void ATExecSetRelOptions(Relation rel, List *defList, AlterTableType operation, LOCKMODE lockmode); @@ -3845,7 +3846,8 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd, pass = AT_PASS_DROP; break; case AT_SetTableSpace: /* SET TABLESPACE */ - ATSimplePermissions(rel, ATT_TABLE | ATT_MATVIEW | ATT_INDEX); + ATSimplePermissions(rel, ATT_TABLE | ATT_MATVIEW | ATT_INDEX | + ATT_PARTITIONED_INDEX); /* This command never recurses */ ATPrepSetTableSpace(tab, rel, cmd->name, lockmode); pass = AT_PASS_MISC; /* doesn't actually matter */ @@ -4181,10 +4183,13 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab, Relation rel, */ break; case AT_SetTableSpace: /* SET TABLESPACE */ - /* - * Nothing to do here; Phase 3 does the work + * Only do this for partitioned indexes, for which this is just + * a catalog change. Other relation types are handled by Phase 3. */ + if (rel->rd_rel->relkind == RELKIND_PARTITIONED_INDEX) + ATExecPartedIdxSetTableSpace(rel, tab->newTableSpace); + break; case AT_SetRelOptions: /* SET (...) */ case AT_ResetRelOptions: /* RESET (...) */ @@ -11049,6 +11054,55 @@ ATExecSetTableSpace(Oid tableOid, Oid newTableSpace, LOCKMODE lockmode) list_free(reltoastidxids); } +/* + * Special handling of ALTER TABLE SET TABLESPACE for partitioned indexes, + * which have no storage (so not handled in Phase 3 like other relation types) + */ +static void +ATExecPartedIdxSetTableSpace(Relation rel, Oid newTableSpace) +{ + HeapTuple tuple; + Oid oldTableSpace; + Relation pg_class; + Form_pg_class rd_rel; + Oid indexOid = RelationGetRelid(rel); + + Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_INDEX); + + /* + * No work if no change in tablespace. + */ + oldTableSpace = rel->rd_rel->reltablespace; + if (newTableSpace == oldTableSpace || + (newTableSpace == MyDatabaseTableSpace && oldTableSpace == 0)) + { + InvokeObjectPostAlterHook(RelationRelationId, + indexOid, 0); + return; + } + + /* Get a modifiable copy of the relation's pg_class row */ + pg_class = heap_open(RelationRelationId, RowExclusiveLock); + + tuple = SearchSysCacheCopy1(RELOID, ObjectIdGetDatum(indexOid)); + if (!HeapTupleIsValid(tuple)) + elog(ERROR, "cache lookup failed for relation %u", indexOid); + rd_rel = (Form_pg_class) GETSTRUCT(tuple); + + /* update the pg_class row */ + rd_rel->reltablespace = (newTableSpace == MyDatabaseTableSpace) ? InvalidOid : newTableSpace; + CatalogTupleUpdate(pg_class, &tuple->t_self, tuple); + + InvokeObjectPostAlterHook(RelationRelationId, indexOid, 0); + + heap_freetuple(tuple); + + heap_close(pg_class, RowExclusiveLock); + + /* Make sure the reltablespace change is visible */ + CommandCounterIncrement(); +} + /* * Alter Table ALL ... SET TABLESPACE * diff --git a/src/test/regress/input/tablespace.source b/src/test/regress/input/tablespace.source index 7f7934b745..60c87261db 100644 --- a/src/test/regress/input/tablespace.source +++ b/src/test/regress/input/tablespace.source @@ -44,6 +44,14 @@ CREATE INDEX foo_idx on testschema.foo(i) TABLESPACE regress_tblspace; SELECT relname, spcname FROM pg_catalog.pg_tablespace t, pg_catalog.pg_class c where c.reltablespace = t.oid AND c.relname = 'foo_idx'; +-- partitioned index +CREATE TABLE testschema.part (a int) PARTITION BY LIST (a); +CREATE TABLE testschema.part1 PARTITION OF testschema.part FOR VALUES IN (1); +CREATE INDEX part_a_idx ON testschema.part (a) TABLESPACE regress_tblspace; +CREATE TABLE testschema.part2 PARTITION OF testschema.part FOR VALUES IN (2); +SELECT relname, spcname FROM pg_catalog.pg_tablespace t, pg_catalog.pg_class c + where c.reltablespace = t.oid AND c.relname LIKE 'part%_idx'; + -- check that default_tablespace doesn't affect ALTER TABLE index rebuilds CREATE TABLE testschema.test_default_tab(id bigint) TABLESPACE regress_tblspace; INSERT INTO testschema.test_default_tab VALUES (1); @@ -93,6 +101,8 @@ CREATE UNIQUE INDEX anindex ON testschema.atable(column1); ALTER TABLE testschema.atable SET TABLESPACE regress_tblspace; ALTER INDEX testschema.anindex SET TABLESPACE regress_tblspace; +ALTER INDEX testschema.part_a_idx SET TABLESPACE pg_default; +ALTER INDEX testschema.part_a_idx SET TABLESPACE regress_tblspace; INSERT INTO testschema.atable VALUES(3); -- ok INSERT INTO testschema.atable VALUES(1); -- fail (checks index) diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source index fe3614cd76..43962e6f01 100644 --- a/src/test/regress/output/tablespace.source +++ b/src/test/regress/output/tablespace.source @@ -61,6 +61,20 @@ SELECT relname, spcname FROM pg_catalog.pg_tablespace t, pg_catalog.pg_class c foo_idx | regress_tblspace (1 row) +-- partitioned index +CREATE TABLE testschema.part (a int) PARTITION BY LIST (a); +CREATE TABLE testschema.part1 PARTITION OF testschema.part FOR VALUES IN (1); +CREATE INDEX part_a_idx ON testschema.part (a) TABLESPACE regress_tblspace; +CREATE TABLE testschema.part2 PARTITION OF testschema.part FOR VALUES IN (2); +SELECT relname, spcname FROM pg_catalog.pg_tablespace t, pg_catalog.pg_class c + where c.reltablespace = t.oid AND c.relname LIKE 'part%_idx'; + relname | spcname +-------------+------------------ + part1_a_idx | regress_tblspace + part2_a_idx | regress_tblspace + part_a_idx | regress_tblspace +(3 rows) + -- check that default_tablespace doesn't affect ALTER TABLE index rebuilds CREATE TABLE testschema.test_default_tab(id bigint) TABLESPACE regress_tblspace; INSERT INTO testschema.test_default_tab VALUES (1); @@ -200,6 +214,8 @@ CREATE TABLE testschema.atable AS VALUES (1), (2); CREATE UNIQUE INDEX anindex ON testschema.atable(column1); ALTER TABLE testschema.atable SET TABLESPACE regress_tblspace; ALTER INDEX testschema.anindex SET TABLESPACE regress_tblspace; +ALTER INDEX testschema.part_a_idx SET TABLESPACE pg_default; +ALTER INDEX testschema.part_a_idx SET TABLESPACE regress_tblspace; INSERT INTO testschema.atable VALUES(3); -- ok INSERT INTO testschema.atable VALUES(1); -- fail (checks index) ERROR: duplicate key value violates unique constraint "anindex" @@ -241,10 +257,11 @@ NOTICE: no matching relations in tablespace "regress_tblspace_renamed" found -- Should succeed DROP TABLESPACE regress_tblspace_renamed; DROP SCHEMA testschema CASCADE; -NOTICE: drop cascades to 5 other objects +NOTICE: drop cascades to 6 other objects DETAIL: drop cascades to table testschema.foo drop cascades to table testschema.asselect drop cascades to table testschema.asexecute +drop cascades to table testschema.part drop cascades to table testschema.atable drop cascades to table testschema.tablespace_acl DROP ROLE regress_tablespace_user1;