mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-16 10:33:27 +08:00
0d5f1ffc83
This patch changes the compression policy to store its configuration in the bgw_job table and removes the bgw_policy_compress_chunks table.
448 lines
19 KiB
PL/PgSQL
448 lines
19 KiB
PL/PgSQL
-- This file and its contents are licensed under the Timescale License.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-TIMESCALE for a copy of the license.
|
|
|
|
\ir include/rand_generator.sql
|
|
\c :TEST_DBNAME :ROLE_SUPERUSER
|
|
\ir include/compression_utils.sql
|
|
|
|
|
|
SET client_min_messages = ERROR;
|
|
DROP TABLESPACE IF EXISTS tablespace1;
|
|
DROP TABLESPACE IF EXISTS tablespace2;
|
|
SET client_min_messages = NOTICE;
|
|
--test hypertable with tables space
|
|
CREATE TABLESPACE tablespace1 OWNER :ROLE_DEFAULT_PERM_USER LOCATION :TEST_TABLESPACE1_PATH;
|
|
CREATE TABLESPACE tablespace2 OWNER :ROLE_DEFAULT_PERM_USER LOCATION :TEST_TABLESPACE2_PATH;
|
|
|
|
\c :TEST_DBNAME :ROLE_DEFAULT_PERM_USER
|
|
|
|
CREATE TABLE test1 ("Time" timestamptz, i integer, b bigint, t text);
|
|
SELECT table_name from create_hypertable('test1', 'Time', chunk_time_interval=> INTERVAL '1 day');
|
|
|
|
INSERT INTO test1 SELECT t, gen_rand_minstd(), gen_rand_minstd(), gen_rand_minstd()::text FROM generate_series('2018-03-02 1:00'::TIMESTAMPTZ, '2018-03-28 1:00', '1 hour') t;
|
|
|
|
ALTER TABLE test1 set (timescaledb.compress, timescaledb.compress_segmentby = 'b', timescaledb.compress_orderby = '"Time" DESC');
|
|
|
|
SELECT COUNT(*) AS count_compressed
|
|
FROM
|
|
(
|
|
SELECT compress_chunk(chunk.schema_name|| '.' || chunk.table_name)
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' and chunk.compressed_chunk_id IS NULL ORDER BY chunk.id
|
|
)
|
|
AS sub;
|
|
|
|
|
|
--make sure allowed ddl still work
|
|
ALTER TABLE test1 CLUSTER ON "test1_Time_idx";
|
|
ALTER TABLE test1 SET WITHOUT CLUSTER;
|
|
CREATE INDEX new_index ON test1(b);
|
|
DROP INDEX new_index;
|
|
ALTER TABLE test1 SET (fillfactor=100);
|
|
ALTER TABLE test1 RESET (fillfactor);
|
|
ALTER TABLE test1 ALTER COLUMN b SET STATISTICS 10;
|
|
|
|
|
|
-- TABLESPACES
|
|
-- For tablepaces with compressed chunks the semantics are the following:
|
|
-- - compressed chunks get put into the same tablespace as the
|
|
-- uncompressed chunk on compression.
|
|
-- - set tablespace on uncompressed hypertable cascades to compressed hypertable+chunks
|
|
-- - set tablespace on all chunks is blocked (same as w/o compression)
|
|
-- - move chunks on a uncompressed chunk errors
|
|
-- - move chunks on compressed chunk works
|
|
|
|
--In the future we will:
|
|
-- - add tablespace option to compress_chunk function and policy (this will override the setting
|
|
-- of the uncompressed chunk). This will allow changing tablespaces upon compression
|
|
-- - Note: The current plan is to never listen to the setting on compressed hypertable. In fact,
|
|
-- we will block setting tablespace on compressed hypertables
|
|
|
|
|
|
SELECT count(*) as "COUNT_CHUNKS_UNCOMPRESSED"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' \gset
|
|
|
|
SELECT count(*) as "COUNT_CHUNKS_COMPRESSED"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1' \gset
|
|
|
|
ALTER TABLE test1 SET TABLESPACE tablespace1;
|
|
|
|
--all chunks + both the compressed and uncompressed hypertable moved to new tablespace
|
|
SELECT count(*) = (:COUNT_CHUNKS_UNCOMPRESSED +:COUNT_CHUNKS_COMPRESSED + 2)
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
ALTER TABLE test1 SET TABLESPACE tablespace2;
|
|
SELECT count(*) = (:COUNT_CHUNKS_UNCOMPRESSED +:COUNT_CHUNKS_COMPRESSED + 2)
|
|
FROM pg_tables WHERE tablespace = 'tablespace2';
|
|
|
|
SELECT
|
|
comp_chunk.schema_name|| '.' || comp_chunk.table_name as "COMPRESSED_CHUNK_NAME",
|
|
uncomp_chunk.schema_name|| '.' || uncomp_chunk.table_name as "UNCOMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk comp_chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (comp_chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
INNER JOIN _timescaledb_catalog.chunk uncomp_chunk ON (uncomp_chunk.compressed_chunk_id = comp_chunk.id)
|
|
WHERE uncomp_hyper.table_name like 'test1' ORDER BY comp_chunk.id LIMIT 1\gset
|
|
|
|
-- ensure compression chunk cannot be moved directly
|
|
SELECT tablename
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
\set ON_ERROR_STOP 0
|
|
ALTER TABLE :COMPRESSED_CHUNK_NAME SET TABLESPACE tablespace1;
|
|
\set ON_ERROR_STOP 1
|
|
SELECT tablename
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
-- ensure that both compressed and uncompressed chunks moved
|
|
ALTER TABLE :UNCOMPRESSED_CHUNK_NAME SET TABLESPACE tablespace1;
|
|
SELECT tablename
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
ALTER TABLE test1 SET TABLESPACE tablespace2;
|
|
SELECT tablename
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
\set ON_ERROR_STOP 0
|
|
SELECT move_chunk(chunk=>:'COMPRESSED_CHUNK_NAME', destination_tablespace=>'tablespace1', index_destination_tablespace=>'tablespace1', reorder_index=>'_timescaledb_internal."compress_hyper_2_28_chunk__compressed_hypertable_2_b__ts_meta_s"');
|
|
\set ON_ERROR_STOP 1
|
|
|
|
-- ensure that both compressed and uncompressed chunks moved
|
|
SELECT move_chunk(chunk=>:'UNCOMPRESSED_CHUNK_NAME', destination_tablespace=>'tablespace1', index_destination_tablespace=>'tablespace1', reorder_index=>'_timescaledb_internal."_hyper_1_1_chunk_test1_Time_idx"');
|
|
SELECT tablename
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
-- the compressed chunk is in here now
|
|
SELECT count(*)
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
SELECT decompress_chunk(:'UNCOMPRESSED_CHUNK_NAME');
|
|
|
|
--the compresse chunk was dropped by decompression
|
|
SELECT count(*)
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
SELECT move_chunk(chunk=>:'UNCOMPRESSED_CHUNK_NAME', destination_tablespace=>'tablespace1', index_destination_tablespace=>'tablespace1', reorder_index=>'_timescaledb_internal."_hyper_1_1_chunk_test1_Time_idx"');
|
|
|
|
--the uncompressed chunks has now been moved
|
|
SELECT count(*)
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
SELECT compress_chunk(:'UNCOMPRESSED_CHUNK_NAME');
|
|
|
|
--the compressed chunk is now in the same tablespace as the uncompressed one
|
|
SELECT count(*)
|
|
FROM pg_tables WHERE tablespace = 'tablespace1';
|
|
|
|
|
|
--
|
|
-- DROP CHUNKS
|
|
--
|
|
SELECT count(*) as count_chunks_uncompressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1';
|
|
|
|
SELECT count(*) as count_chunks_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1';
|
|
|
|
|
|
SELECT chunk.schema_name|| '.' || chunk.table_name as "UNCOMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' ORDER BY chunk.id LIMIT 1 \gset
|
|
|
|
DROP TABLE :UNCOMPRESSED_CHUNK_NAME;
|
|
|
|
--should decrease #chunks both compressed and decompressed
|
|
SELECT count(*) as count_chunks_uncompressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1';
|
|
|
|
--make sure there are no orphaned _timescaledb_catalog.compression_chunk_size entries (should be 0)
|
|
SELECT count(*) as orphaned_compression_chunk_size
|
|
FROM _timescaledb_catalog.compression_chunk_size size
|
|
LEFT JOIN _timescaledb_catalog.chunk chunk ON (chunk.id = size.chunk_id)
|
|
WHERE chunk.id IS NULL;
|
|
|
|
SELECT count(*) as count_chunks_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1';
|
|
|
|
SELECT drop_chunks('test1', older_than => '2018-03-10'::TIMESTAMPTZ);
|
|
|
|
--should decrease #chunks both compressed and decompressed
|
|
SELECT count(*) as count_chunks_uncompressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1';
|
|
|
|
SELECT count(*) as count_chunks_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1';
|
|
|
|
SELECT chunk.schema_name|| '.' || chunk.table_name as "UNCOMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' ORDER BY chunk.id LIMIT 1 \gset
|
|
|
|
SELECT chunk.schema_name|| '.' || chunk.table_name as "COMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1' ORDER BY chunk.id LIMIT 1
|
|
\gset
|
|
|
|
\set ON_ERROR_STOP 0
|
|
DROP TABLE :COMPRESSED_CHUNK_NAME;
|
|
\set ON_ERROR_STOP 1
|
|
|
|
SELECT
|
|
chunk.schema_name|| '.' || chunk.table_name as "UNCOMPRESSED_CHUNK_NAME",
|
|
comp_chunk.schema_name|| '.' || comp_chunk.table_name as "COMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.chunk comp_chunk ON (chunk.compressed_chunk_id = comp_chunk.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' ORDER BY chunk.id LIMIT 1 \gset
|
|
|
|
--create a dependent object on the compressed chunk to test cascade behaviour
|
|
CREATE VIEW dependent_1 AS SELECT * FROM :COMPRESSED_CHUNK_NAME;
|
|
|
|
\set ON_ERROR_STOP 0
|
|
--errors due to dependent objects
|
|
DROP TABLE :UNCOMPRESSED_CHUNK_NAME;
|
|
\set ON_ERROR_STOP 1
|
|
|
|
DROP TABLE :UNCOMPRESSED_CHUNK_NAME CASCADE;
|
|
|
|
--should decrease #chunks both compressed and decompressed
|
|
SELECT count(*) as count_chunks_uncompressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1';
|
|
|
|
SELECT count(*) as count_chunks_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1';
|
|
|
|
SELECT
|
|
chunk.schema_name|| '.' || chunk.table_name as "UNCOMPRESSED_CHUNK_NAME",
|
|
comp_chunk.schema_name|| '.' || comp_chunk.table_name as "COMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.chunk comp_chunk ON (chunk.compressed_chunk_id = comp_chunk.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' ORDER BY chunk.id LIMIT 1 \gset
|
|
|
|
CREATE VIEW dependent_1 AS SELECT * FROM :COMPRESSED_CHUNK_NAME;
|
|
|
|
\set ON_ERROR_STOP 0
|
|
\set VERBOSITY default
|
|
--errors due to dependent objects
|
|
SELECT drop_chunks('test1', older_than => '2018-03-28'::TIMESTAMPTZ);
|
|
\set VERBOSITY terse
|
|
\set ON_ERROR_STOP 1
|
|
|
|
DROP VIEW dependent_1;
|
|
SELECT drop_chunks('test1', older_than => '2018-03-28'::TIMESTAMPTZ);
|
|
|
|
--should decrease #chunks both compressed and decompressed
|
|
SELECT count(*) as count_chunks_uncompressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1';
|
|
|
|
SELECT count(*) as count_chunks_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1';
|
|
|
|
--make sure there are no orphaned _timescaledb_catalog.compression_chunk_size entries (should be 0)
|
|
SELECT count(*) as orphaned_compression_chunk_size
|
|
FROM _timescaledb_catalog.compression_chunk_size size
|
|
LEFT JOIN _timescaledb_catalog.chunk chunk ON (chunk.id = size.chunk_id)
|
|
WHERE chunk.id IS NULL;
|
|
|
|
--
|
|
-- DROP HYPERTABLE
|
|
--
|
|
|
|
SELECT comp_hyper.schema_name|| '.' || comp_hyper.table_name as "COMPRESSED_HYPER_NAME"
|
|
FROM _timescaledb_catalog.hypertable comp_hyper
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1' ORDER BY comp_hyper.id LIMIT 1 \gset
|
|
|
|
\set ON_ERROR_STOP 0
|
|
DROP TABLE :COMPRESSED_HYPER_NAME;
|
|
\set ON_ERROR_STOP 1
|
|
|
|
BEGIN;
|
|
SELECT hypertable.schema_name|| '.' || hypertable.table_name as "UNCOMPRESSED_HYPER_NAME"
|
|
FROM _timescaledb_catalog.hypertable hypertable
|
|
WHERE hypertable.table_name like 'test1' ORDER BY hypertable.id LIMIT 1 \gset
|
|
|
|
--before the drop there are 2 hypertables: the compressed and uncompressed ones
|
|
SELECT count(*) FROM _timescaledb_catalog.hypertable hypertable;
|
|
--add policy to make sure it's dropped later
|
|
select add_compression_policy(:'UNCOMPRESSED_HYPER_NAME', interval '1 day');
|
|
SELECT count(*) FROM _timescaledb_config.bgw_job WHERE job_type = 'compress_chunks';
|
|
|
|
DROP TABLE :UNCOMPRESSED_HYPER_NAME;
|
|
|
|
--verify that there are no more hypertable remaining
|
|
SELECT count(*) FROM _timescaledb_catalog.hypertable hypertable;
|
|
SELECT count(*) FROM _timescaledb_catalog.hypertable_compression;
|
|
|
|
--verify that the policy is gone
|
|
SELECT count(*) FROM _timescaledb_config.bgw_job WHERE job_type = 'compress_chunks';
|
|
|
|
ROLLBACK;
|
|
|
|
--create a dependent object on the compressed hypertable to test cascade behaviour
|
|
|
|
CREATE VIEW dependent_1 AS SELECT * FROM :COMPRESSED_HYPER_NAME;
|
|
\set ON_ERROR_STOP 0
|
|
DROP TABLE :UNCOMPRESSED_HYPER_NAME;
|
|
\set ON_ERROR_STOP 1
|
|
|
|
BEGIN;
|
|
DROP TABLE :UNCOMPRESSED_HYPER_NAME CASCADE;
|
|
SELECT count(*) FROM _timescaledb_catalog.hypertable hypertable;
|
|
ROLLBACK;
|
|
DROP VIEW dependent_1;
|
|
|
|
|
|
--create a cont agg view on the ht as well then the drop should nuke everything
|
|
SET timescaledb.current_timestamp_mock = '2018-03-28 1:00';
|
|
CREATE VIEW test1_cont_view WITH (timescaledb.continuous, timescaledb.materialized_only=true, timescaledb.refresh_interval='72 hours')
|
|
AS SELECT time_bucket('1 hour', "Time"), SUM(i)
|
|
FROM test1
|
|
GROUP BY 1;
|
|
|
|
REFRESH MATERIALIZED VIEW test1_cont_view;
|
|
|
|
SELECT count(*) FROM test1_cont_view;
|
|
|
|
\c :TEST_DBNAME :ROLE_SUPERUSER
|
|
|
|
SELECT chunk.schema_name|| '.' || chunk.table_name as "COMPRESSED_CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hyper ON (chunk.hypertable_id = comp_hyper.id)
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'test1' ORDER BY chunk.id LIMIT 1
|
|
\gset
|
|
|
|
ALTER TABLE test1 OWNER TO :ROLE_DEFAULT_PERM_USER_2;
|
|
|
|
--make sure new owner is propagated down
|
|
SELECT a.rolname from pg_class c INNER JOIN pg_authid a ON(c.relowner = a.oid) WHERE c.oid = 'test1'::regclass;
|
|
SELECT a.rolname from pg_class c INNER JOIN pg_authid a ON(c.relowner = a.oid) WHERE c.oid = :'COMPRESSED_HYPER_NAME'::regclass;
|
|
SELECT a.rolname from pg_class c INNER JOIN pg_authid a ON(c.relowner = a.oid) WHERE c.oid = :'COMPRESSED_CHUNK_NAME'::regclass;
|
|
|
|
--
|
|
-- turn off compression
|
|
--
|
|
|
|
SELECT COUNT(*) AS count_compressed
|
|
FROM
|
|
(
|
|
SELECT decompress_chunk(chunk.schema_name|| '.' || chunk.table_name)
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' and chunk.compressed_chunk_id IS NOT NULL ORDER BY chunk.id
|
|
)
|
|
AS sub;
|
|
|
|
select add_compression_policy('test1', interval '1 day');
|
|
\set ON_ERROR_STOP 0
|
|
ALTER table test1 set (timescaledb.compress='f');
|
|
\set ON_ERROR_STOP 1
|
|
|
|
select remove_compression_policy('test1');
|
|
ALTER table test1 set (timescaledb.compress='f');
|
|
|
|
--only one hypertable left
|
|
SELECT count(*) = 1 FROM _timescaledb_catalog.hypertable hypertable;
|
|
SELECT compressed_hypertable_id IS NULL FROM _timescaledb_catalog.hypertable hypertable WHERE hypertable.table_name like 'test1' ;
|
|
--no hypertable compression entries left
|
|
SELECT count(*) = 0 FROM _timescaledb_catalog.hypertable_compression;
|
|
--make sure there are no orphaned _timescaledb_catalog.compression_chunk_size entries (should be 0)
|
|
SELECT count(*) as orphaned_compression_chunk_size
|
|
FROM _timescaledb_catalog.compression_chunk_size size
|
|
LEFT JOIN _timescaledb_catalog.chunk chunk ON (chunk.id = size.chunk_id)
|
|
WHERE chunk.id IS NULL;
|
|
|
|
|
|
--can turn compression back on
|
|
ALTER TABLE test1 set (timescaledb.compress, timescaledb.compress_segmentby = 'b', timescaledb.compress_orderby = '"Time" DESC');
|
|
|
|
SELECT COUNT(*) AS count_compressed
|
|
FROM
|
|
(
|
|
SELECT compress_chunk(chunk.schema_name|| '.' || chunk.table_name)
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' and chunk.compressed_chunk_id IS NULL ORDER BY chunk.id
|
|
)
|
|
AS sub;
|
|
|
|
DROP TABLE test1 CASCADE;
|
|
DROP TABLESPACE tablespace1;
|
|
DROP TABLESPACE tablespace2;
|
|
|
|
-- Triggers are NOT fired for compress/decompress
|
|
CREATE TABLE test1 ("Time" timestamptz, i integer);
|
|
SELECT table_name from create_hypertable('test1', 'Time', chunk_time_interval=> INTERVAL '1 day');
|
|
CREATE OR REPLACE FUNCTION test1_print_func()
|
|
RETURNS TRIGGER LANGUAGE PLPGSQL AS
|
|
$BODY$
|
|
BEGIN
|
|
RAISE NOTICE ' raise notice test1_print_trigger called ';
|
|
RETURN OLD;
|
|
END;
|
|
$BODY$;
|
|
CREATE TRIGGER test1_trigger
|
|
BEFORE INSERT OR UPDATE OR DELETE OR TRUNCATE ON test1
|
|
FOR EACH STATEMENT EXECUTE FUNCTION test1_print_func();
|
|
|
|
INSERT INTO test1 SELECT generate_series('2018-03-02 1:00'::TIMESTAMPTZ, '2018-03-03 1:00', '1 hour') , 1 ;
|
|
-- add a row trigger too --
|
|
CREATE TRIGGER test1_trigger2
|
|
BEFORE INSERT OR UPDATE OR DELETE ON test1
|
|
FOR EACH ROW EXECUTE FUNCTION test1_print_func();
|
|
INSERT INTO test1 SELECT '2018-03-02 1:05'::TIMESTAMPTZ, 2;
|
|
|
|
ALTER TABLE test1 set (timescaledb.compress, timescaledb.compress_orderby = '"Time" DESC');
|
|
|
|
SELECT COUNT(*) AS count_compressed FROM
|
|
(
|
|
SELECT compress_chunk(chunk.schema_name|| '.' || chunk.table_name)
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' and chunk.compressed_chunk_id IS NULL ORDER BY chunk.id) AS subq;
|
|
|
|
SELECT COUNT(*) AS count_compressed FROM
|
|
(
|
|
SELECT decompress_chunk(chunk.schema_name|| '.' || chunk.table_name)
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like 'test1' ORDER BY chunk.id ) as subq;
|
|
|