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https://github.com/ClickHouse/ClickHouse.git
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156 lines
5.3 KiB
Python
156 lines
5.3 KiB
Python
import time
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.cluster import ClickHouseKiller
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from helpers.test_tools import assert_eq_with_retry
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def fill_nodes(nodes):
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for node in nodes:
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node.query(
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'''
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CREATE TABLE test(n UInt32)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/', '{replica}')
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ORDER BY n PARTITION BY n % 10;
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'''.format(replica=node.name))
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cluster = ClickHouseCluster(__file__)
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configs =["configs/remote_servers.xml"]
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node_1 = cluster.add_instance('replica1', with_zookeeper=True, main_configs=configs)
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node_2 = cluster.add_instance('replica2', with_zookeeper=True, main_configs=configs)
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node_3 = cluster.add_instance('replica3', with_zookeeper=True, main_configs=configs)
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nodes = [node_1, node_2, node_3]
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def fill_table():
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node_1.query("TRUNCATE TABLE test")
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for node in nodes:
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node.query("SYSTEM SYNC REPLICA test")
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check_data(0, 0)
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# it will create multiple parts in each partition and probably cause merges
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node_1.query("INSERT INTO test SELECT number + 0 FROM numbers(200)")
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node_1.query("INSERT INTO test SELECT number + 200 FROM numbers(200)")
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node_1.query("INSERT INTO test SELECT number + 400 FROM numbers(200)")
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node_1.query("INSERT INTO test SELECT number + 600 FROM numbers(200)")
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node_1.query("INSERT INTO test SELECT number + 800 FROM numbers(200)")
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check_data(499500, 1000)
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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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fill_nodes(nodes)
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yield cluster
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except Exception as ex:
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print(ex)
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finally:
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cluster.shutdown()
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def check_data(_sum: int, count: int) -> None:
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res = "{}\t{}\n".format(_sum, count)
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assert_eq_with_retry(node_1, "SELECT sum(n), count() FROM test", res)
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assert_eq_with_retry(node_2, "SELECT sum(n), count() FROM test", res)
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assert_eq_with_retry(node_3, "SELECT sum(n), count() FROM test", res)
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def check_after_restoration():
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check_data(1999000, 2000)
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for node in nodes:
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node.query_and_get_error("SYSTEM RESTORE REPLICA test")
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def test_restore_replica_invalid_tables(start_cluster):
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print("Checking the invocation on non-existent and non-replicated tables")
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node_1.query_and_get_error("SYSTEM RESTORE REPLICA i_dont_exist_42")
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node_1.query_and_get_error("SYSTEM RESTORE REPLICA no_db.i_dont_exist_42")
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node_1.query_and_get_error("SYSTEM RESTORE REPLICA system.numbers")
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def test_restore_replica_sequential(start_cluster):
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zk = cluster.get_kazoo_client('zoo1')
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fill_table()
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print("Deleting root ZK path metadata")
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zk.delete("/clickhouse/tables/test", recursive=True)
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assert zk.exists("/clickhouse/tables/test") is None
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node_1.query("SYSTEM RESTART REPLICA test")
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node_1.query_and_get_error("INSERT INTO test SELECT number AS num FROM numbers(1000,2000) WHERE num % 2 = 0")
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print("Restoring replica1")
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node_1.query("SYSTEM RESTORE REPLICA test")
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assert zk.exists("/clickhouse/tables/test")
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check_data(499500, 1000)
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node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
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print("Restoring other replicas")
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node_2.query("SYSTEM RESTART REPLICA test")
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node_2.query("SYSTEM RESTORE REPLICA test")
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node_3.query("SYSTEM RESTART REPLICA test")
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node_3.query("SYSTEM RESTORE REPLICA test")
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node_2.query("SYSTEM SYNC REPLICA test")
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node_3.query("SYSTEM SYNC REPLICA test")
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check_after_restoration()
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def test_restore_replica_parallel(start_cluster):
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zk = cluster.get_kazoo_client('zoo1')
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fill_table()
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print("Deleting root ZK path metadata")
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zk.delete("/clickhouse/tables/test", recursive=True)
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assert zk.exists("/clickhouse/tables/test") is None
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node_1.query("SYSTEM RESTART REPLICA test")
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node_1.query_and_get_error("INSERT INTO test SELECT number AS num FROM numbers(1000,2000) WHERE num % 2 = 0")
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print("Restoring replicas in parallel")
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node_2.query("SYSTEM RESTART REPLICA test")
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node_3.query("SYSTEM RESTART REPLICA test")
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node_1.query("SYSTEM RESTORE REPLICA test ON CLUSTER test_cluster")
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assert zk.exists("/clickhouse/tables/test")
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check_data(499500, 1000)
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node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
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check_after_restoration()
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def test_restore_replica_alive_replicas(start_cluster):
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zk = cluster.get_kazoo_client('zoo1')
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fill_table()
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print("Deleting replica2 path, trying to restore replica1")
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zk.delete("/clickhouse/tables/test/replicas/replica2", recursive=True)
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assert zk.exists("/clickhouse/tables/test/replicas/replica2") is None
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node_1.query_and_get_error("SYSTEM RESTORE REPLICA test")
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print("Deleting replica1 path, trying to restore replica1")
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zk.delete("/clickhouse/tables/test/replicas/replica1", recursive=True)
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assert zk.exists("/clickhouse/tables/test/replicas/replica1") is None
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node_1.query("SYSTEM RESTART REPLICA test")
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node_1.query("SYSTEM RESTORE REPLICA test")
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node_2.query("SYSTEM RESTART REPLICA test")
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node_2.query("SYSTEM RESTORE REPLICA test")
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check_data(499500, 1000)
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node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
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node_2.query("SYSTEM SYNC REPLICA test")
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node_3.query("SYSTEM SYNC REPLICA test")
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check_after_restoration()
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