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cagg_concurrent_invalidation.spec
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cagg_concurrent_invalidation.spec
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# 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.
#
# Test concurrent CAgg refreshes and invalidation threshold updates. This isolation test
# checks that we don't skip CAgg updates when two sessions are trying to modify the
# invalidation threshold at the same time.
#
setup
{
CREATE TABLE temperature (
time timestamptz NOT NULL,
value float
);
SELECT create_hypertable('temperature', 'time');
INSERT INTO temperature
SELECT time, ceil(random() * 100)::int
FROM generate_series('2000-01-01 0:00:00+0'::timestamptz,
'2000-01-01 23:59:59+0','1m') time;
CREATE MATERIALIZED VIEW cagg_1
WITH (timescaledb.continuous) AS
SELECT time_bucket('4 hour', time), avg(value)
FROM temperature
GROUP BY 1 ORDER BY 1
WITH NO DATA;
CREATE MATERIALIZED VIEW cagg_2
WITH (timescaledb.continuous) AS
SELECT time_bucket('4 hour', time), avg(value)
FROM temperature
GROUP BY 1 ORDER BY 1
WITH NO DATA;
}
# Refresh CAGGs in separate transactions
setup
{
CALL refresh_continuous_aggregate('cagg_1', NULL, NULL);
}
setup
{
CALL refresh_continuous_aggregate('cagg_2', NULL, NULL);
}
# Add new data to hypertable. This time in the year 2020 instead of 2000 as we
# did for the setup of the CAgg.
setup
{
INSERT INTO temperature
SELECT time, ceil(random() * 100)::int
FROM generate_series('2020-01-01 0:00:00+0'::timestamptz,
'2020-01-01 23:59:59+0','1m') time;
}
teardown {
DROP TABLE temperature CASCADE;
}
session "S1"
step "s1_run_update" {
CALL refresh_continuous_aggregate('cagg_1', '2020-01-01 00:00:00', '2021-01-01 00:00:00');
}
session "S2"
step "s2_run_update" {
CALL refresh_continuous_aggregate('cagg_2', '2020-01-01 00:00:00', '2021-01-01 00:00:00');
}
session "S3"
step "s3_lock_invalidation" {
SELECT debug_waitpoint_enable('invalidation_threshold_scan_update_enter');
}
step "s3_release_invalidation" {
SELECT debug_waitpoint_release('invalidation_threshold_scan_update_enter');
}
# Check that both CAggs have a watermark in 2020 after the updates are executed.
# mat_hypertable_id is not included in the query to make the test independent of the
# actual hypertable ids.
step "s3_check_watermarks" {
SELECT _timescaledb_functions.to_timestamp(watermark)
FROM _timescaledb_catalog.continuous_aggs_watermark
ORDER BY mat_hypertable_id;
}
permutation "s3_lock_invalidation" "s1_run_update" "s2_run_update" "s3_release_invalidation" "s3_check_watermarks"("s1_run_update", "s2_run_update")