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258 lines
8.3 KiB
Python
258 lines
8.3 KiB
Python
#!/usr/bin/env python3
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import pytest
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import time
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import ast
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import random
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import assert_eq_with_retry
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance("node1", with_zookeeper=True)
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node2 = cluster.add_instance("node2", with_zookeeper=True)
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@pytest.fixture(scope="module")
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def start_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 remove_part_from_disk(node, table, part_name):
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part_path = node.query(
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"SELECT path FROM system.parts WHERE table = '{}' and name = '{}'".format(
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table, part_name
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)
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).strip()
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if not part_path:
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raise Exception("Part " + part_name + "doesn't exist")
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node.exec_in_container(
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["bash", "-c", "rm -r {p}/*".format(p=part_path)], privileged=True
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)
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def test_lost_part_same_replica(start_cluster):
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for node in [node1, node2]:
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node.query(
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"CREATE TABLE mt0 (id UInt64, date Date) ENGINE ReplicatedMergeTree('/clickhouse/tables/t', '{}') ORDER BY tuple() PARTITION BY date".format(
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node.name
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)
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)
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node1.query("SYSTEM STOP MERGES mt0")
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node2.query("SYSTEM STOP REPLICATION QUEUES")
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for i in range(5):
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node1.query("INSERT INTO mt0 VALUES ({}, toDate('2020-10-01'))".format(i))
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for i in range(20):
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parts_to_merge = node1.query(
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"SELECT parts_to_merge FROM system.replication_queue"
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)
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if parts_to_merge:
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parts_list = list(sorted(ast.literal_eval(parts_to_merge)))
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print("Got parts list", parts_list)
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if len(parts_list) < 3:
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raise Exception("Got too small parts list {}".format(parts_list))
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break
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time.sleep(1)
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victim_part_from_the_middle = random.choice(parts_list[1:-1])
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print("Will corrupt part", victim_part_from_the_middle)
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remove_part_from_disk(node1, "mt0", victim_part_from_the_middle)
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node1.query("DETACH TABLE mt0")
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node1.query("ATTACH TABLE mt0")
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node1.query("SYSTEM START MERGES mt0")
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for i in range(10):
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result = node1.query("SELECT count() FROM system.replication_queue")
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if int(result) == 0:
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break
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time.sleep(1)
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else:
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assert False, "Still have something in replication queue:\n" + node1.query(
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"SELECT count() FROM system.replication_queue FORMAT Vertical"
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)
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assert node1.contains_in_log(
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"Created empty part"
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), "Seems like empty part {} is not created or log message changed".format(
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victim_part_from_the_middle
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)
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assert node1.query("SELECT COUNT() FROM mt0") == "4\n"
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node2.query("SYSTEM START REPLICATION QUEUES")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM mt0", "4")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM system.replication_queue", "0")
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def test_lost_part_other_replica(start_cluster):
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for node in [node1, node2]:
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node.query(
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"CREATE TABLE mt1 (id UInt64) ENGINE ReplicatedMergeTree('/clickhouse/tables/t1', '{}') ORDER BY tuple()".format(
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node.name
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)
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)
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node1.query("SYSTEM STOP MERGES mt1")
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node2.query("SYSTEM STOP REPLICATION QUEUES")
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for i in range(5):
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node1.query("INSERT INTO mt1 VALUES ({})".format(i))
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for i in range(20):
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parts_to_merge = node1.query(
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"SELECT parts_to_merge FROM system.replication_queue"
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)
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if parts_to_merge:
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parts_list = list(sorted(ast.literal_eval(parts_to_merge)))
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print("Got parts list", parts_list)
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if len(parts_list) < 3:
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raise Exception("Got too small parts list {}".format(parts_list))
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break
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time.sleep(1)
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victim_part_from_the_middle = random.choice(parts_list[1:-1])
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print("Will corrupt part", victim_part_from_the_middle)
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remove_part_from_disk(node1, "mt1", victim_part_from_the_middle)
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# other way to detect broken parts
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node1.query("CHECK TABLE mt1")
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node2.query("SYSTEM START REPLICATION QUEUES")
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for i in range(10):
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result = node2.query("SELECT count() FROM system.replication_queue")
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if int(result) == 0:
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break
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time.sleep(1)
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else:
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assert False, "Still have something in replication queue:\n" + node2.query(
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"SELECT * FROM system.replication_queue FORMAT Vertical"
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)
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assert node1.contains_in_log(
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"Created empty part"
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), "Seems like empty part {} is not created or log message changed".format(
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victim_part_from_the_middle
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)
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assert_eq_with_retry(node2, "SELECT COUNT() FROM mt1", "4")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM system.replication_queue", "0")
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node1.query("SYSTEM START MERGES mt1")
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assert_eq_with_retry(node1, "SELECT COUNT() FROM mt1", "4")
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assert_eq_with_retry(node1, "SELECT COUNT() FROM system.replication_queue", "0")
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def test_lost_part_mutation(start_cluster):
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for node in [node1, node2]:
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node.query(
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"CREATE TABLE mt2 (id UInt64) ENGINE ReplicatedMergeTree('/clickhouse/tables/t2', '{}') ORDER BY tuple()".format(
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node.name
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)
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)
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node1.query("SYSTEM STOP MERGES mt2")
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node2.query("SYSTEM STOP REPLICATION QUEUES")
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for i in range(2):
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node1.query("INSERT INTO mt2 VALUES ({})".format(i))
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node1.query(
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"ALTER TABLE mt2 UPDATE id = 777 WHERE 1", settings={"mutations_sync": "0"}
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)
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for i in range(20):
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parts_to_mutate = node1.query("SELECT count() FROM system.replication_queue")
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# two mutations for both replicas
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if int(parts_to_mutate) == 4:
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break
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time.sleep(1)
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remove_part_from_disk(node1, "mt2", "all_1_1_0")
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# other way to detect broken parts
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node1.query("CHECK TABLE mt2")
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node1.query("SYSTEM START MERGES mt2")
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for i in range(10):
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result = node1.query("SELECT count() FROM system.replication_queue")
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if int(result) == 0:
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break
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time.sleep(1)
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else:
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assert False, "Still have something in replication queue:\n" + node1.query(
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"SELECT * FROM system.replication_queue FORMAT Vertical"
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)
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assert_eq_with_retry(node1, "SELECT COUNT() FROM mt2", "1")
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assert_eq_with_retry(node1, "SELECT SUM(id) FROM mt2", "777")
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assert_eq_with_retry(node1, "SELECT COUNT() FROM system.replication_queue", "0")
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node2.query("SYSTEM START REPLICATION QUEUES")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM mt2", "1")
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assert_eq_with_retry(node2, "SELECT SUM(id) FROM mt2", "777")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM system.replication_queue", "0")
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def test_lost_last_part(start_cluster):
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for node in [node1, node2]:
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node.query(
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"CREATE TABLE mt3 (id UInt64, p String) ENGINE ReplicatedMergeTree('/clickhouse/tables/t3', '{}') "
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"ORDER BY tuple() PARTITION BY p".format(node.name)
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)
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node1.query("SYSTEM STOP MERGES mt3")
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node2.query("SYSTEM STOP REPLICATION QUEUES")
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for i in range(1):
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node1.query("INSERT INTO mt3 VALUES ({}, 'x')".format(i))
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# actually not important
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node1.query(
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"ALTER TABLE mt3 UPDATE id = 777 WHERE 1", settings={"mutations_sync": "0"}
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)
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partition_id = node1.query("select partitionId('x')").strip()
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remove_part_from_disk(node1, "mt3", "{}_0_0_0".format(partition_id))
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# other way to detect broken parts
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node1.query("CHECK TABLE mt3")
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node1.query("SYSTEM START MERGES mt3")
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for i in range(10):
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result = node1.query("SELECT count() FROM system.replication_queue")
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assert int(result) <= 1, "Have a lot of entries in queue {}".format(
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node1.query("SELECT * FROM system.replication_queue FORMAT Vertical")
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)
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if node1.contains_in_log("Cannot create empty part") and node1.contains_in_log(
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"DROP/DETACH PARTITION"
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):
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break
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time.sleep(1)
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else:
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assert False, "Don't have required messages in node1 log"
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node1.query("ALTER TABLE mt3 DROP PARTITION ID '{}'".format(partition_id))
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assert_eq_with_retry(node1, "SELECT COUNT() FROM mt3", "0")
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assert_eq_with_retry(node1, "SELECT COUNT() FROM system.replication_queue", "0")
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