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78 lines
2.4 KiB
Python
78 lines
2.4 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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from multiprocessing.dummy import Pool
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from helpers.corrupt_part_data_on_disk import corrupt_part_data_on_disk
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import time
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance("node1", with_zookeeper=True)
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def test_merge_and_part_corruption(started_cluster):
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node1.query(
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"""
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CREATE TABLE replicated_mt(date Date, id UInt32, value Int32)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/replicated_mt', '{replica}') ORDER BY id
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SETTINGS cleanup_delay_period=1, cleanup_delay_period_random_add=1, cleanup_thread_preferred_points_per_iteration=0;
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""".format(
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replica=node1.name
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)
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)
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node1.query("SYSTEM STOP REPLICATION QUEUES replicated_mt")
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for i in range(4):
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node1.query(
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"INSERT INTO replicated_mt SELECT toDate('2019-10-01'), number, number * number FROM numbers ({f}, 100000)".format(
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f=i * 100000
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)
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)
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assert (
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node1.query(
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"SELECT COUNT() FROM system.parts WHERE table='replicated_mt' AND active=1"
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)
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== "4\n"
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)
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# Need to corrupt "border part" (left or right). If we will corrupt something in the middle
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# clickhouse will not consider merge as broken, because we have parts with the same min and max
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# block numbers.
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corrupt_part_data_on_disk(node1, "replicated_mt", "all_3_3_0")
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with Pool(1) as p:
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def optimize_with_delay(x):
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node1.query("OPTIMIZE TABLE replicated_mt FINAL", timeout=30)
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# corrupt part after merge already assigned, but not started
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res_opt = p.apply_async(optimize_with_delay, (1,))
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node1.query(
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"CHECK TABLE replicated_mt",
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settings={"check_query_single_value_result": 0, "max_threads": 1},
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)
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# start merge
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node1.query("SYSTEM START REPLICATION QUEUES replicated_mt")
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res_opt.get()
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# will hung if checked bug not fixed
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node1.query(
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"ALTER TABLE replicated_mt UPDATE value = 7 WHERE 1",
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settings={"mutations_sync": 2},
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timeout=30,
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)
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assert node1.query("SELECT sum(value) FROM replicated_mt") == "2100000\n"
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node1.query("DROP TABLE replicated_mt SYNC")
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