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https://github.com/ClickHouse/ClickHouse.git
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5fafeea763
- Mark getCreateTableQuery() non virtual to call it from ctor - Make check for CREATE TABLE simpler (by caching result) - Extend error message. v2: at SystemLog tables has not been initialized yet, so SHOW CREATE cannot be obtained for the existing table, move the check to the prepareTable() call. v3: reset UUID and SETTINGS of MergeTree in CREATE TABLE query v4: fix re-creating table with the same UUID
71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# pylint: disable=line-too-long
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# pylint: disable=unused-argument
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# pylint: disable=redefined-outer-name
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import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node = cluster.add_instance('node_default', stay_alive=True)
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@pytest.fixture(scope='module', autouse=True)
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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 test_system_logs_recreate():
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system_logs = [
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# enabled by default
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'query_log',
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'query_thread_log',
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'part_log',
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'trace_log',
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'metric_log',
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]
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node.query('SYSTEM FLUSH LOGS')
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for table in system_logs:
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assert 'ENGINE = MergeTree' in node.query(f'SHOW CREATE TABLE system.{table}')
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assert 'ENGINE = Null' not in node.query(f'SHOW CREATE TABLE system.{table}')
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assert len(node.query(f"SHOW TABLES FROM system LIKE '{table}%'").strip().split('\n')) == 1
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# NOTE: we use zzz- prefix to make it the last file,
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# so that it will be applied last.
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for table in system_logs:
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node.exec_in_container(['bash', '-c', f"""echo "
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<clickhouse>
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<{table}>
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<engine>ENGINE = Null</engine>
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<partition_by remove='remove'/>
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</{table}>
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</clickhouse>
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" > /etc/clickhouse-server/config.d/zzz-override-{table}.xml
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"""])
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node.restart_clickhouse()
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node.query('SYSTEM FLUSH LOGS')
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for table in system_logs:
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assert 'ENGINE = MergeTree' not in node.query(f'SHOW CREATE TABLE system.{table}')
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assert 'ENGINE = Null' in node.query(f'SHOW CREATE TABLE system.{table}')
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assert len(node.query(f"SHOW TABLES FROM system LIKE '{table}%'").strip().split('\n')) == 2
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for table in system_logs:
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node.exec_in_container(['rm', f'/etc/clickhouse-server/config.d/zzz-override-{table}.xml'])
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node.restart_clickhouse()
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node.query('SYSTEM FLUSH LOGS')
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for table in system_logs:
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assert 'ENGINE = MergeTree' in node.query(f'SHOW CREATE TABLE system.{table}')
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assert 'ENGINE = Null' not in node.query(f'SHOW CREATE TABLE system.{table}')
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assert len(node.query(f"SHOW TABLES FROM system LIKE '{table}%'").strip().split('\n')) == 3
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node.query('SYSTEM FLUSH LOGS')
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# Ensure that there was no superfluous RENAME's
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# IOW that the table created only when the structure is indeed different.
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for table in system_logs:
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assert len(node.query(f"SHOW TABLES FROM system LIKE '{table}%'").strip().split('\n')) == 3
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