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Introduce dependencies from columnarAM to columnar metadata objects 

During pg upgrades, we have seen that it is not guaranteed that a
columnar table will be created after metadata objects got created.
Prior to changes done in this commit, we had such a dependency
relationship in `pg_depend`:

```
columnar_table ----> columnarAM ----> citus extension
                                           ^  ^
                                           |  |
columnar.storage_id_seq --------------------  |
                                              |
columnar.stripe -------------------------------
```

Since `pg_upgrade` just knows to follow topological sort of the objects
when creating database dump, above dependency graph doesn't imply that
`columnar_table` should be created before metadata objects such as
`columnar.storage_id_seq` and `columnar.stripe` are created.

For this reason, with this commit we add new records to `pg_depend` to
make columnarAM depending on all rel objects living in `columnar`
schema. That way, `pg_upgrade` will know it needs to create those before
creating `columnarAM`, and similarly, before creating any tables using
`columnarAM`.

Note that in addition to inserting those records via installation script,
we also do the same in `citus_finish_pg_upgrade()`. This is because,
`pg_upgrade` rebuilds catalog tables in the new cluster and that means,
we must insert them in the new cluster too.

(cherry picked from commit 73f06323d8)
pull/5568/head
Onur Tirtir 2021-11-17 16:32:13 +03:00
parent 88f2b8a60d
commit b66abbcba8
13 changed files with 508 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/backend/columnar/sql/columnar--10.2-3--10.2-4.sql Normal file
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@ -0,0 +1,5 @@
-- columnar--10.2-3--10.2-4.sql
#include "udfs/columnar_ensure_am_depends_catalog/10.2-4.sql"
SELECT citus_internal.columnar_ensure_am_depends_catalog();

6
src/backend/columnar/sql/downgrades/columnar--10.2-4--10.2-3.sql Normal file
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@ -0,0 +1,6 @@
-- columnar--10.2-4--10.2-3.sql
DROP FUNCTION citus_internal.columnar_ensure_am_depends_catalog();
-- Note that we intentionally do not delete pg_depend records that we inserted
-- via columnar--10.2-3--10.2-4.sql (by using columnar_ensure_am_depends_catalog).

40
src/backend/columnar/sql/udfs/columnar_ensure_am_depends_catalog/10.2-4.sql Normal file
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@ -0,0 +1,40 @@
CREATE OR REPLACE FUNCTION citus_internal.columnar_ensure_am_depends_catalog()
RETURNS void
LANGUAGE plpgsql
SET search_path = pg_catalog
AS $func$
BEGIN
INSERT INTO pg_depend
SELECT -- Define a dependency edge from "columnar table access method" ..
'pg_am'::regclass::oid as classid,
(select oid from pg_am where amname = 'columnar') as objid,
0 as objsubid,
-- ... to each object that is registered to pg_class and that lives
-- in "columnar" schema. That contains catalog tables, indexes
-- created on them and the sequences created in "columnar" schema.
--
-- Given the possibility of user might have created their own objects
-- in columnar schema, we explicitly specify list of objects that we
-- are interested in.
'pg_class'::regclass::oid as refclassid,
columnar_schema_members.relname::regclass::oid as refobjid,
0 as refobjsubid,
'n' as deptype
FROM (VALUES ('columnar.chunk'),
('columnar.chunk_group'),
('columnar.chunk_group_pkey'),
('columnar.chunk_pkey'),
('columnar.options'),
('columnar.options_pkey'),
('columnar.storageid_seq'),
('columnar.stripe'),
('columnar.stripe_first_row_number_idx'),
('columnar.stripe_pkey')
) columnar_schema_members(relname)
-- Avoid inserting duplicate entries into pg_depend.
EXCEPT TABLE pg_depend;
END;
$func$;
COMMENT ON FUNCTION citus_internal.columnar_ensure_am_depends_catalog()
IS 'internal function responsible for creating dependencies from columnar '
'table access method to the rel objects in columnar schema';

40
src/backend/columnar/sql/udfs/columnar_ensure_am_depends_catalog/latest.sql Normal file
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@ -0,0 +1,40 @@
CREATE OR REPLACE FUNCTION citus_internal.columnar_ensure_am_depends_catalog()
RETURNS void
LANGUAGE plpgsql
SET search_path = pg_catalog
AS $func$
BEGIN
INSERT INTO pg_depend
SELECT -- Define a dependency edge from "columnar table access method" ..
'pg_am'::regclass::oid as classid,
(select oid from pg_am where amname = 'columnar') as objid,
0 as objsubid,
-- ... to each object that is registered to pg_class and that lives
-- in "columnar" schema. That contains catalog tables, indexes
-- created on them and the sequences created in "columnar" schema.
--
-- Given the possibility of user might have created their own objects
-- in columnar schema, we explicitly specify list of objects that we
-- are interested in.
'pg_class'::regclass::oid as refclassid,
columnar_schema_members.relname::regclass::oid as refobjid,
0 as refobjsubid,
'n' as deptype
FROM (VALUES ('columnar.chunk'),
('columnar.chunk_group'),
('columnar.chunk_group_pkey'),
('columnar.chunk_pkey'),
('columnar.options'),
('columnar.options_pkey'),
('columnar.storageid_seq'),
('columnar.stripe'),
('columnar.stripe_first_row_number_idx'),
('columnar.stripe_pkey')
) columnar_schema_members(relname)
-- Avoid inserting duplicate entries into pg_depend.
EXCEPT TABLE pg_depend;
END;
$func$;
COMMENT ON FUNCTION citus_internal.columnar_ensure_am_depends_catalog()
IS 'internal function responsible for creating dependencies from columnar '
'table access method to the rel objects in columnar schema';

3
src/backend/distributed/sql/citus--10.2-3--10.2-4.sql
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@ -2,6 +2,9 @@
-- bump version to 10.2-4
#include "../../columnar/sql/columnar--10.2-3--10.2-4.sql"
#include "udfs/fix_partition_shard_index_names/10.2-4.sql"
#include "udfs/fix_all_partition_shard_index_names/10.2-4.sql"
#include "udfs/worker_fix_partition_shard_index_names/10.2-4.sql"
#include "udfs/citus_finish_pg_upgrade/10.2-4.sql"

7
src/backend/distributed/sql/downgrades/citus--10.2-4--10.2-3.sql
View File

@ -3,3 +3,10 @@
DROP FUNCTION pg_catalog.fix_all_partition_shard_index_names();
DROP FUNCTION pg_catalog.fix_partition_shard_index_names(regclass);
DROP FUNCTION pg_catalog.worker_fix_partition_shard_index_names(regclass, text, text);
#include "../udfs/citus_finish_pg_upgrade/10.2-1.sql"
-- This needs to be done after downgrading citus_finish_pg_upgrade. This is
-- because citus_finish_pg_upgrade/10.2-4 depends on columnar_ensure_am_depends_catalog,
-- which is dropped by columnar--10.2-4--10.2-3.sql
#include "../../../columnar/sql/downgrades/columnar--10.2-4--10.2-3.sql"

144
src/backend/distributed/sql/udfs/citus_finish_pg_upgrade/10.2-4.sql generated Normal file
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@ -0,0 +1,144 @@
CREATE OR REPLACE FUNCTION pg_catalog.citus_finish_pg_upgrade()
RETURNS void
LANGUAGE plpgsql
SET search_path = pg_catalog
AS $cppu$
DECLARE
table_name regclass;
command text;
trigger_name text;
BEGIN
IF substring(current_Setting('server_version'), '\d+')::int >= 14 THEN
EXECUTE $cmd$
CREATE AGGREGATE array_cat_agg(anycompatiblearray) (SFUNC = array_cat, STYPE = anycompatiblearray);
COMMENT ON AGGREGATE array_cat_agg(anycompatiblearray)
IS 'concatenate input arrays into a single array';
$cmd$;
ELSE
EXECUTE $cmd$
CREATE AGGREGATE array_cat_agg(anyarray) (SFUNC = array_cat, STYPE = anyarray);
COMMENT ON AGGREGATE array_cat_agg(anyarray)
IS 'concatenate input arrays into a single array';
$cmd$;
END IF;
--
-- Citus creates the array_cat_agg but because of a compatibility
-- issue between pg13-pg14, we drop and create it during upgrade.
-- And as Citus creates it, there needs to be a dependency to the
-- Citus extension, so we create that dependency here.
-- We are not using:
-- ALTER EXENSION citus DROP/CREATE AGGREGATE array_cat_agg
-- because we don't have an easy way to check if the aggregate
-- exists with anyarray type or anycompatiblearray type.
INSERT INTO pg_depend
SELECT
'pg_proc'::regclass::oid as classid,
(SELECT oid FROM pg_proc WHERE proname = 'array_cat_agg') as objid,
0 as objsubid,
'pg_extension'::regclass::oid as refclassid,
(select oid from pg_extension where extname = 'citus') as refobjid,
0 as refobjsubid ,
'e' as deptype;
--
-- restore citus catalog tables
--
INSERT INTO pg_catalog.pg_dist_partition SELECT * FROM public.pg_dist_partition;
INSERT INTO pg_catalog.pg_dist_shard SELECT * FROM public.pg_dist_shard;
INSERT INTO pg_catalog.pg_dist_placement SELECT * FROM public.pg_dist_placement;
INSERT INTO pg_catalog.pg_dist_node_metadata SELECT * FROM public.pg_dist_node_metadata;
INSERT INTO pg_catalog.pg_dist_node SELECT * FROM public.pg_dist_node;
INSERT INTO pg_catalog.pg_dist_local_group SELECT * FROM public.pg_dist_local_group;
INSERT INTO pg_catalog.pg_dist_transaction SELECT * FROM public.pg_dist_transaction;
INSERT INTO pg_catalog.pg_dist_colocation SELECT * FROM public.pg_dist_colocation;
-- enterprise catalog tables
INSERT INTO pg_catalog.pg_dist_authinfo SELECT * FROM public.pg_dist_authinfo;
INSERT INTO pg_catalog.pg_dist_poolinfo SELECT * FROM public.pg_dist_poolinfo;
INSERT INTO pg_catalog.pg_dist_rebalance_strategy SELECT
name,
default_strategy,
shard_cost_function::regprocedure::regproc,
node_capacity_function::regprocedure::regproc,
shard_allowed_on_node_function::regprocedure::regproc,
default_threshold,
minimum_threshold,
improvement_threshold
FROM public.pg_dist_rebalance_strategy;
--
-- drop backup tables
--
DROP TABLE public.pg_dist_authinfo;
DROP TABLE public.pg_dist_colocation;
DROP TABLE public.pg_dist_local_group;
DROP TABLE public.pg_dist_node;
DROP TABLE public.pg_dist_node_metadata;
DROP TABLE public.pg_dist_partition;
DROP TABLE public.pg_dist_placement;
DROP TABLE public.pg_dist_poolinfo;
DROP TABLE public.pg_dist_shard;
DROP TABLE public.pg_dist_transaction;
DROP TABLE public.pg_dist_rebalance_strategy;
--
-- reset sequences
--
PERFORM setval('pg_catalog.pg_dist_shardid_seq', (SELECT MAX(shardid)+1 AS max_shard_id FROM pg_dist_shard), false);
PERFORM setval('pg_catalog.pg_dist_placement_placementid_seq', (SELECT MAX(placementid)+1 AS max_placement_id FROM pg_dist_placement), false);
PERFORM setval('pg_catalog.pg_dist_groupid_seq', (SELECT MAX(groupid)+1 AS max_group_id FROM pg_dist_node), false);
PERFORM setval('pg_catalog.pg_dist_node_nodeid_seq', (SELECT MAX(nodeid)+1 AS max_node_id FROM pg_dist_node), false);
PERFORM setval('pg_catalog.pg_dist_colocationid_seq', (SELECT MAX(colocationid)+1 AS max_colocation_id FROM pg_dist_colocation), false);
--
-- register triggers
--
FOR table_name IN SELECT logicalrelid FROM pg_catalog.pg_dist_partition
LOOP
trigger_name := 'truncate_trigger_' || table_name::oid;
command := 'create trigger ' || trigger_name || ' after truncate on ' || table_name || ' execute procedure pg_catalog.citus_truncate_trigger()';
EXECUTE command;
command := 'update pg_trigger set tgisinternal = true where tgname = ' || quote_literal(trigger_name);
EXECUTE command;
END LOOP;
--
-- set dependencies
--
INSERT INTO pg_depend
SELECT
'pg_class'::regclass::oid as classid,
p.logicalrelid::regclass::oid as objid,
0 as objsubid,
'pg_extension'::regclass::oid as refclassid,
(select oid from pg_extension where extname = 'citus') as refobjid,
0 as refobjsubid ,
'n' as deptype
FROM pg_catalog.pg_dist_partition p;
-- set dependencies for columnar table access method
PERFORM citus_internal.columnar_ensure_am_depends_catalog();
-- restore pg_dist_object from the stable identifiers
TRUNCATE citus.pg_dist_object;
INSERT INTO citus.pg_dist_object (classid, objid, objsubid, distribution_argument_index, colocationid)
SELECT
address.classid,
address.objid,
address.objsubid,
naming.distribution_argument_index,
naming.colocationid
FROM
public.pg_dist_object naming,
pg_catalog.pg_get_object_address(naming.type, naming.object_names, naming.object_args) address;
DROP TABLE public.pg_dist_object;
END;
$cppu$;
COMMENT ON FUNCTION pg_catalog.citus_finish_pg_upgrade()
IS 'perform tasks to restore citus settings from a location that has been prepared before pg_upgrade';

3
src/backend/distributed/sql/udfs/citus_finish_pg_upgrade/latest.sql
View File

@ -120,6 +120,9 @@ BEGIN
'n' as deptype
FROM pg_catalog.pg_dist_partition p;
-- set dependencies for columnar table access method
PERFORM citus_internal.columnar_ensure_am_depends_catalog();
-- restore pg_dist_object from the stable identifiers
TRUNCATE citus.pg_dist_object;
INSERT INTO citus.pg_dist_object (classid, objid, objsubid, distribution_argument_index, colocationid)

49
src/test/regress/expected/multi_extension.out
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@ -883,6 +883,21 @@ SELECT * FROM multi_extension.print_extension_changes();
-- Test downgrade to 10.2-3 from 10.2-4
ALTER EXTENSION citus UPDATE TO '10.2-4';
ALTER EXTENSION citus UPDATE TO '10.2-3';
-- Make sure that we don't delete pg_depend entries added in
-- columnar--10.2-3--10.2-4.sql when downgrading to 10.2-3.
SELECT COUNT(*)=10
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
?column?
---------------------------------------------------------------------
t
(1 row)
-- Should be empty result since upgrade+downgrade should be a no-op
SELECT * FROM multi_extension.print_extension_changes();
previous_object | current_object
@ -894,11 +909,43 @@ ALTER EXTENSION citus UPDATE TO '10.2-4';
SELECT * FROM multi_extension.print_extension_changes();
previous_object | current_object
---------------------------------------------------------------------
| function citus_internal.columnar_ensure_am_depends_catalog() void
| function fix_all_partition_shard_index_names() SETOF regclass
| function fix_partition_shard_index_names(regclass) void
| function worker_fix_partition_shard_index_names(regclass,text,text) void
(3 rows)
(4 rows)
-- Make sure that we defined dependencies from all rel objects (tables,
-- indexes, sequences ..) to columnar table access method ...
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
-- ... , so this should be empty,
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
oid
---------------------------------------------------------------------
(0 rows)
-- ... , and both columnar_schema_members_pg_depend & columnar_schema_members
-- should have 10 entries.
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
?column?
---------------------------------------------------------------------
t
(1 row)
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
DROP TABLE multi_extension.prev_objects, multi_extension.extension_diff;
-- show running version
SHOW citus.version;

99
src/test/regress/expected/upgrade_columnar_after.out
View File

@ -257,5 +257,102 @@ BEGIN;
--
-- I somehow reproduced this bug easily when upgrading pg, that is why
-- adding the test to this file.
DROP EXTENSION citus CASCADE;
--
-- TODO: Need to uncomment following line after fixing
-- https://github.com/citusdata/citus/issues/5483.
-- DROP EXTENSION citus CASCADE;
ROLLBACK;
-- Make sure that we define dependencies from all rel objects (tables,
-- indexes, sequences ..) to columnar table access method.
--
-- Given that this test file is run both before and after pg upgrade, the
-- first run will test that for columnar--10.2-3--10.2-4.sql script, and the
-- second run will test the same for citus_finish_pg_upgrade(), for the post
-- pg-upgrade scenario.
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
-- ... , so this should be empty,
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
oid
---------------------------------------------------------------------
(0 rows)
-- ... , and both columnar_schema_members_pg_depend & columnar_schema_members
-- should have 10 entries.
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
?column?
---------------------------------------------------------------------
t
(1 row)
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
-- Check the same for workers too.
SELECT run_command_on_workers(
$$
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
$$
);
run_command_on_workers
---------------------------------------------------------------------
(localhost,57636,t,"SELECT 10")
(localhost,57637,t,"SELECT 10")
(2 rows)
SELECT run_command_on_workers(
$$
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
$$
);
run_command_on_workers
---------------------------------------------------------------------
(localhost,57636,t,"")
(localhost,57637,t,"")
(2 rows)
SELECT run_command_on_workers(
$$
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
$$
);
run_command_on_workers
---------------------------------------------------------------------
(localhost,57636,t,t)
(localhost,57637,t,t)
(2 rows)
SELECT run_command_on_workers(
$$
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
$$
);
run_command_on_workers
---------------------------------------------------------------------
(localhost,57636,t,"DROP TABLE")
(localhost,57637,t,"DROP TABLE")
(2 rows)

3
src/test/regress/expected/upgrade_list_citus_objects.out
View File

@ -57,6 +57,7 @@ ORDER BY 1;
function citus_extradata_container(internal)
function citus_finish_pg_upgrade()
function citus_get_active_worker_nodes()
function citus_internal.columnar_ensure_am_depends_catalog()
function citus_internal.downgrade_columnar_storage(regclass)
function citus_internal.find_groupid_for_node(text,integer)
function citus_internal.pg_dist_node_trigger_func()
@ -261,5 +262,5 @@ ORDER BY 1;
view citus_worker_stat_activity
view pg_dist_shard_placement
view time_partitions
(245 rows)
(246 rows)

38
src/test/regress/sql/multi_extension.sql
View File

@ -369,6 +369,18 @@ SELECT * FROM multi_extension.print_extension_changes();
-- Test downgrade to 10.2-3 from 10.2-4
ALTER EXTENSION citus UPDATE TO '10.2-4';
ALTER EXTENSION citus UPDATE TO '10.2-3';
-- Make sure that we don't delete pg_depend entries added in
-- columnar--10.2-3--10.2-4.sql when downgrading to 10.2-3.
SELECT COUNT(*)=10
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
-- Should be empty result since upgrade+downgrade should be a no-op
SELECT * FROM multi_extension.print_extension_changes();
@ -376,6 +388,32 @@ SELECT * FROM multi_extension.print_extension_changes();
ALTER EXTENSION citus UPDATE TO '10.2-4';
SELECT * FROM multi_extension.print_extension_changes();
-- Make sure that we defined dependencies from all rel objects (tables,
-- indexes, sequences ..) to columnar table access method ...
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
-- ... , so this should be empty,
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
-- ... , and both columnar_schema_members_pg_depend & columnar_schema_members
-- should have 10 entries.
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
DROP TABLE multi_extension.prev_objects, multi_extension.extension_diff;
-- show running version

75
src/test/regress/sql/upgrade_columnar_after.sql
View File

@ -129,5 +129,78 @@ BEGIN;
--
-- I somehow reproduced this bug easily when upgrading pg, that is why
-- adding the test to this file.
DROP EXTENSION citus CASCADE;
--
-- TODO: Need to uncomment following line after fixing
-- https://github.com/citusdata/citus/issues/5483.
-- DROP EXTENSION citus CASCADE;
ROLLBACK;
-- Make sure that we define dependencies from all rel objects (tables,
-- indexes, sequences ..) to columnar table access method.
--
-- Given that this test file is run both before and after pg upgrade, the
-- first run will test that for columnar--10.2-3--10.2-4.sql script, and the
-- second run will test the same for citus_finish_pg_upgrade(), for the post
-- pg-upgrade scenario.
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
-- ... , so this should be empty,
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
-- ... , and both columnar_schema_members_pg_depend & columnar_schema_members
-- should have 10 entries.
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
-- Check the same for workers too.
SELECT run_command_on_workers(
$$
SELECT pg_class.oid INTO columnar_schema_members
FROM pg_class, pg_namespace
WHERE pg_namespace.oid=pg_class.relnamespace AND
pg_namespace.nspname='columnar';
SELECT refobjid INTO columnar_schema_members_pg_depend
FROM pg_depend
WHERE classid = 'pg_am'::regclass::oid AND
objid = (select oid from pg_am where amname = 'columnar') AND
objsubid = 0 AND
refclassid = 'pg_class'::regclass::oid AND
refobjsubid = 0 AND
deptype = 'n';
$$
);
SELECT run_command_on_workers(
$$
(TABLE columnar_schema_members EXCEPT TABLE columnar_schema_members_pg_depend)
UNION
(TABLE columnar_schema_members_pg_depend EXCEPT TABLE columnar_schema_members);
$$
);
SELECT run_command_on_workers(
$$
SELECT COUNT(*)=10 FROM columnar_schema_members_pg_depend;
$$
);
SELECT run_command_on_workers(
$$
DROP TABLE columnar_schema_members, columnar_schema_members_pg_depend;
$$
);