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60 lines
2.5 KiB
Python
60 lines
2.5 KiB
Python
import pytest
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import time
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from helpers.cluster import ClickHouseCluster
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from helpers.network import PartitionManager
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from helpers.client import QueryRuntimeException
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
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node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'], 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_non_leader_replica(started_cluster):
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node1.query('''CREATE TABLE sometable(id UInt32, value String)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/0/sometable', '1') ORDER BY tuple()''')
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node2.query('''CREATE TABLE sometable(id UInt32, value String)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/0/sometable', '2') ORDER BY tuple() SETTINGS replicated_can_become_leader = 0''')
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node1.query("INSERT INTO sometable SELECT number, toString(number) FROM numbers(100)")
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node2.query("SYSTEM SYNC REPLICA sometable", timeout=10)
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assert node1.query("SELECT COUNT() FROM sometable") == "100\n"
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assert node2.query("SELECT COUNT() FROM sometable") == "100\n"
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with PartitionManager() as pm:
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pm.drop_instance_zk_connections(node1)
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# this query should be executed by leader, but leader partitioned from zookeeper
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with pytest.raises(Exception):
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node2.query("ALTER TABLE sometable ON CLUSTER 'test_cluster' MODIFY COLUMN value UInt64 SETTINGS distributed_ddl_task_timeout=5")
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for _ in range(100):
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if 'UInt64' in node1.query("SELECT type FROM system.columns WHERE name='value' and table = 'sometable'"):
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break
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time.sleep(0.1)
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for _ in range(100):
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if 'UInt64' in node2.query("SELECT type FROM system.columns WHERE name='value' and table = 'sometable'"):
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break
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time.sleep(0.1)
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assert 'UInt64' in node1.query("SELECT type FROM system.columns WHERE name='value' and table = 'sometable'")
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assert 'UInt64' in node2.query("SELECT type FROM system.columns WHERE name='value' and table = 'sometable'")
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# Checking that DDLWorker doesn't hung and still able to execute DDL queries
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node1.query("CREATE TABLE new_table_with_ddl ON CLUSTER 'test_cluster' (key UInt32) ENGINE=MergeTree() ORDER BY tuple()", settings={"distributed_ddl_task_timeout": "10"})
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assert node1.query("EXISTS new_table_with_ddl") == "1\n"
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assert node2.query("EXISTS new_table_with_ddl") == "1\n"
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