ClickHouse/tests/integration/test_mutations_with_projection/test.py

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import time
import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
instance_test_mutations = cluster.add_instance(
"test_mutations_with_projection",
main_configs=["configs/config.xml"],
user_configs=["configs/users.xml"],
)
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
instance_test_mutations.query(
"""
CREATE TABLE video_log
(
`datetime` DateTime, -- 20,000 records per second
`user_id` UInt64, -- Cardinality == 100,000,000
`device_id` UInt64, -- Cardinality == 200,000,000
`video_id` UInt64, -- Cardinality == 100,00000
`domain` LowCardinality(String), -- Cardinality == 100
`bytes` UInt64, -- Ranging from 128 to 1152
`duration` UInt64, -- Ranging from 100 to 400
PROJECTION p_norm (SELECT datetime, device_id, bytes, duration ORDER BY device_id),
PROJECTION p_agg (SELECT toStartOfHour(datetime) AS hour, domain, sum(bytes), avg(duration) GROUP BY hour, domain)
)
ENGINE = MergeTree
PARTITION BY toDate(datetime) -- Daily partitioning
ORDER BY (user_id, device_id, video_id) -- Can only favor one column here
SETTINGS index_granularity = 1000;
"""
)
instance_test_mutations.query(
"""CREATE TABLE rng (`user_id_raw` UInt64, `device_id_raw` UInt64, `video_id_raw` UInt64, `domain_raw` UInt64, `bytes_raw` UInt64, `duration_raw` UInt64) ENGINE = GenerateRandom(1024);"""
)
instance_test_mutations.query(
"""INSERT INTO video_log SELECT toUnixTimestamp(toDateTime(today())) + (rowNumberInAllBlocks() / 20000), user_id_raw % 100000000 AS user_id, device_id_raw % 200000000 AS device_id, video_id_raw % 100000000 AS video_id, domain_raw % 100, (bytes_raw % 1024) + 128, (duration_raw % 300) + 100 FROM rng LIMIT 500000;"""
)
instance_test_mutations.query("""OPTIMIZE TABLE video_log FINAL;""")
yield cluster
finally:
cluster.shutdown()
def test_mutations_with_multi_level_merge_of_projections(started_cluster):
try:
instance_test_mutations.query(
"""ALTER TABLE video_log UPDATE bytes = bytes + 10086 WHERE 1;"""
)
def count_and_changed():
return instance_test_mutations.query(
"SELECT count(), countIf(bytes > 10000) FROM video_log SETTINGS force_index_by_date = 0, force_primary_key = 0 FORMAT CSV"
).splitlines()
all_done = False
for wait_times_for_mutation in range(
100
): # wait for replication 80 seconds max
time.sleep(0.8)
if count_and_changed() == ["500000,500000"]:
all_done = True
break
print(
instance_test_mutations.query(
"SELECT mutation_id, command, parts_to_do, is_done, latest_failed_part, latest_fail_reason, parts_to_do_names FROM system.mutations WHERE table = 'video_log' SETTINGS force_index_by_date = 0, force_primary_key = 0 FORMAT TSVWithNames"
)
)
assert (count_and_changed(), all_done) == (["500000,500000"], True)
assert instance_test_mutations.query(
f"SELECT DISTINCT arraySort(projections) FROM system.parts WHERE table = 'video_log' SETTINGS force_index_by_date = 0, force_primary_key = 0 FORMAT TSVRaw"
).splitlines() == ["['p_agg','p_norm']"]
finally:
instance_test_mutations.query(f"""DROP TABLE video_log""")