ClickHouse/tests/integration/test_attach_without_checksums/test.py

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import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance("node1")
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@pytest.fixture(scope="module")
def start_cluster():
try:
cluster.start()
yield cluster
finally:
cluster.shutdown()
def test_attach_without_checksums(start_cluster):
node1.query(
"CREATE TABLE test (date Date, key Int32, value String) Engine=MergeTree ORDER BY key PARTITION by date"
)
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node1.query(
"INSERT INTO test SELECT toDate('2019-10-01'), number, toString(number) FROM numbers(100)"
)
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assert node1.query("SELECT COUNT() FROM test WHERE key % 10 == 0") == "10\n"
node1.query("ALTER TABLE test DETACH PARTITION '2019-10-01'")
assert node1.query("SELECT COUNT() FROM test WHERE key % 10 == 0") == "0\n"
assert node1.query("SELECT COUNT() FROM test") == "0\n"
# to be sure output not empty
node1.exec_in_container(
[
"bash",
"-c",
'find /var/lib/clickhouse/data/default/test/detached -name "checksums.txt" | grep -e ".*" ',
],
privileged=True,
user="root",
)
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node1.exec_in_container(
[
"bash",
"-c",
'find /var/lib/clickhouse/data/default/test/detached -name "checksums.txt" -delete',
],
privileged=True,
user="root",
)
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node1.query("ALTER TABLE test ATTACH PARTITION '2019-10-01'")
assert node1.query("SELECT COUNT() FROM test WHERE key % 10 == 0") == "10\n"
assert node1.query("SELECT COUNT() FROM test") == "100\n"
node1.query("DROP TABLE test")