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https://github.com/timescale/timescaledb.git
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d135256ed7
Currently, chunk indexes are always created in the tablespace of the index on the main table (which could be none/default one), even if the chunks themselves are created in different tablespaces. This is problematic in a multi-disk setting where each disk is a separate tablespace where chunks are placed. The chunk indexes might exhaust the space on the common (often default tablespace) which might not have a lot of disk space. This also prohibits the database, including index storage to grow by adding new tablespaces. Instead, chunk indexes are now created in the "next" tablespace after that of their chunks to both spread indexes across tablespaces and avoid colocating indexes with their chunks (for I/O throughput reasons). To optionally avoid this spreading, one can pin chunk indexes to a specific tablespace by setting an explicit tablespace on a main table index.
129 lines
4.8 KiB
SQL
129 lines
4.8 KiB
SQL
\set ON_ERROR_STOP 0
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\c single :ROLE_SUPERUSER
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SET client_min_messages = ERROR;
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DROP TABLESPACE IF EXISTS tablespace1;
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DROP TABLESPACE IF EXISTS tablespace2;
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SET client_min_messages = NOTICE;
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--test hypertable with tables space
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CREATE TABLESPACE tablespace1 OWNER :ROLE_DEFAULT_PERM_USER LOCATION :TEST_TABLESPACE1_PATH;
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\c single :ROLE_DEFAULT_PERM_USER
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--assigning a tablespace via the main table should work
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CREATE TABLE tspace_2dim(time timestamp, temp float, device text) TABLESPACE tablespace1;
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SELECT create_hypertable('tspace_2dim', 'time', 'device', 2);
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INSERT INTO tspace_2dim VALUES ('2017-01-20T09:00:01', 24.3, 'blue');
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--verify that the table chunk has the correct tablespace
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SELECT relname, spcname FROM pg_class c
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INNER JOIN pg_tablespace t ON (c.reltablespace = t.oid)
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INNER JOIN _timescaledb_catalog.chunk ch ON (ch.table_name = c.relname);
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--check some error conditions
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SELECT attach_tablespace('tablespace2', NULL);
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SELECT attach_tablespace(NULL, 'tspace_2dim');
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SELECT attach_tablespace('none_existing_tablespace', 'tspace_2dim');
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SELECT attach_tablespace('tablespace2', 'none_existing_table');
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--attach another tablespace without first creating it --> should generate error
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SELECT attach_tablespace('tablespace2', 'tspace_2dim');
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--attach the same tablespace twice to same table should also generate error
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SELECT attach_tablespace('tablespace1', 'tspace_2dim');
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\c single :ROLE_SUPERUSER
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CREATE TABLESPACE tablespace2 OWNER :ROLE_DEFAULT_PERM_USER_2 LOCATION :TEST_TABLESPACE2_PATH;
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\c single :ROLE_DEFAULT_PERM_USER_2
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--attach without permissions on the table should fail
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SELECT attach_tablespace('tablespace2', 'tspace_2dim');
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\c single :ROLE_DEFAULT_PERM_USER
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--attach without permissions on the tablespace should also fail
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SELECT attach_tablespace('tablespace2', 'tspace_2dim');
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\c single :ROLE_SUPERUSER
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GRANT :ROLE_DEFAULT_PERM_USER_2 TO :ROLE_DEFAULT_PERM_USER;
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\c single :ROLE_DEFAULT_PERM_USER
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--should work with permissions on both the table and the tablespace
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SELECT attach_tablespace('tablespace2', 'tspace_2dim');
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SELECT * FROM _timescaledb_catalog.tablespace;
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SELECT * FROM show_tablespaces('tspace_2dim');
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--insert into another chunk
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INSERT INTO tspace_2dim VALUES ('2017-01-20T09:00:01', 24.3, 'brown');
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SELECT * FROM test.show_subtables('tspace_2dim');
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--indexes should inherit the tablespace of their chunk
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SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
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--
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SET ROLE :ROLE_DEFAULT_PERM_USER_2;
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-- User doesn't have permission on tablespace1 --> error
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CREATE TABLE tspace_1dim(time timestamp, temp float, device text);
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-- Grant permission to tablespace1
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SET ROLE :ROLE_DEFAULT_PERM_USER;
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GRANT CREATE ON TABLESPACE tablespace1 TO :ROLE_DEFAULT_PERM_USER_2;
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SET ROLE :ROLE_DEFAULT_PERM_USER_2;
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CREATE TABLE tspace_1dim(time timestamp, temp float, device text);
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SELECT create_hypertable('tspace_1dim', 'time');
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SELECT attach_tablespace('tablespace1', 'tspace_1dim');
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SELECT attach_tablespace('tablespace2', 'tspace_1dim');
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SELECT * FROM _timescaledb_catalog.tablespace;
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INSERT INTO tspace_1dim VALUES ('2017-01-20T09:00:01', 24.3, 'blue');
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INSERT INTO tspace_1dim VALUES ('2017-03-20T09:00:01', 24.3, 'brown');
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SELECT * FROM test.show_subtablesp('tspace_%');
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--indexes should inherit the tablespace of their chunk, unless the
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--parent index has a tablespace set, in which case the chunks'
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--corresponding indexes are pinned to the parent index's
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--tablespace. The parent index can have a tablespace set in two cases:
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--(1) if explicitly set in CREATE INDEX, or (2) if the main table was
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--created with a tablespace, because then default indexes will be
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--created in that tablespace too.
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SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
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--detach tablespace1 from all tables. Due to lack of permissions,
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--should only detach from 'tspace_1dim' (1 tablespace)
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SELECT detach_tablespace('tablespace1');
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SELECT * FROM _timescaledb_catalog.tablespace;
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SELECT * FROM show_tablespaces('tspace_1dim');
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SELECT * FROM show_tablespaces('tspace_2dim');
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--detach the other tablespace
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SELECT detach_tablespace('tablespace2', 'tspace_1dim');
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SELECT * FROM _timescaledb_catalog.tablespace;
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SELECT * FROM show_tablespaces('tspace_1dim');
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SELECT * FROM show_tablespaces('tspace_2dim');
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--detaching a tablespace from table without permissions should fail
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SELECT detach_tablespace('tablespace2', 'tspace_2dim');
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SELECT detach_tablespaces('tspace_2dim');
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--set other user should make detach work
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SET ROLE :ROLE_DEFAULT_PERM_USER;
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SELECT detach_tablespaces('tspace_2dim');
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SELECT * FROM _timescaledb_catalog.tablespace;
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SELECT * FROM show_tablespaces('tspace_1dim');
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SELECT * FROM show_tablespaces('tspace_2dim');
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--cleanup
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DROP TABLE tspace_1dim CASCADE;
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DROP TABLE tspace_2dim CASCADE;
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DROP TABLESPACE tablespace1;
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DROP TABLESPACE tablespace2;
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-- revoke grants
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\c single :ROLE_SUPERUSER
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REVOKE :ROLE_DEFAULT_PERM_USER_2 FROM :ROLE_DEFAULT_PERM_USER;
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