ClickHouse/tests/integration/test_no_local_metadata_node/test.py

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import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance('node1', with_zookeeper=True)
@pytest.fixture(scope="module")
def start_cluster():
try:
cluster.start()
yield cluster
finally:
cluster.shutdown()
def test_table_start_without_metadata(start_cluster):
node1.query("""
CREATE TABLE test (date Date)
ENGINE = ReplicatedMergeTree('/clickhouse/table/test_table', '1')
ORDER BY tuple()
""")
node1.query("INSERT INTO test VALUES(toDate('2019-12-01'))")
assert node1.query("SELECT date FROM test") == "2019-12-01\n"
# some fake alter
node1.query("ALTER TABLE test MODIFY COLUMN date Date DEFAULT toDate('2019-10-01')")
assert node1.query("SELECT date FROM test") == "2019-12-01\n"
node1.query("DETACH TABLE test")
zk_cli = cluster.get_kazoo_client('zoo1')
# simulate update from old version
zk_cli.delete("/clickhouse/table/test_table/replicas/1/metadata")
zk_cli.delete("/clickhouse/table/test_table/replicas/1/metadata_version")
node1.query("ATTACH TABLE test")
assert node1.query("SELECT date FROM test") == "2019-12-01\n"
node1.query("ALTER TABLE test MODIFY COLUMN date Date DEFAULT toDate('2019-09-01')")
node1.query("DETACH TABLE test")
2020-10-02 16:54:07 +00:00
zk_cli.set("/clickhouse/table/test_table/replicas/1/metadata", b"")
node1.query("ATTACH TABLE test")
assert node1.query("SELECT date FROM test") == "2019-12-01\n"