ClickHouse/tests/integration/test_part_uuid/test.py

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import uuid
import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance(
'node1',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree_uuids.xml'],
with_zookeeper=True)
node2 = cluster.add_instance(
'node2',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree_uuids.xml', 'configs/merge_tree_in_memory.xml'],
with_zookeeper=True)
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
yield cluster
finally:
cluster.shutdown()
def test_part_uuid(started_cluster):
uuid_zero = uuid.UUID(bytes=b"\x00" * 16)
for ix, n in enumerate([node1, node2]):
n.query("""
CREATE TABLE t(key UInt64, value UInt64)
ENGINE ReplicatedMergeTree('/clickhouse/tables/t', '{}')
ORDER BY tuple()
""".format(ix))
# Test insert assigns uuid to part.
node1.query("INSERT INTO t VALUES (1, 1)")
uuids = set()
for node in [node1, node2]:
node.query("SYSTEM SYNC REPLICA t")
part_initial_uuid = uuid.UUID(node.query("SELECT uuid FROM system.parts WHERE table = 't' AND active ORDER BY name").strip())
uuids.add(part_initial_uuid)
assert uuid_zero != part_initial_uuid
assert len(uuids) == 1, "expect the same uuid on all the replicas"
# Test detach / attach.
node1.query("ALTER TABLE t DETACH PARTITION tuple(); ALTER TABLE t ATTACH PARTITION tuple()")
for node in [node1, node2]:
node.query("SYSTEM SYNC REPLICA t")
part_reattach_uuid = uuid.UUID(node.query(
"SELECT uuid FROM system.parts WHERE table = 't' AND active ORDER BY name").strip())
assert part_initial_uuid == part_reattach_uuid
# Test mutation assigns new non-zero uuids.
node1.query("ALTER TABLE t UPDATE value = 1 WHERE key = 1 SETTINGS mutations_sync = 2")
part_mutate_uuid = uuid.UUID(node1.query("SELECT uuid FROM system.parts WHERE table = 't' AND active ORDER BY name").strip())
assert part_mutate_uuid not in [uuid_zero, part_initial_uuid]
node2.query("SYSTEM SYNC REPLICA t")
assert part_mutate_uuid == uuid.UUID(node2.query(
"SELECT uuid FROM system.parts WHERE table = 't' AND active ORDER BY name").strip())
# Test merge assigns new non-zero uuids.
node2.query("INSERT INTO t VALUES (1, 1)")
node2.query("OPTIMIZE TABLE t FINAL")
uuids = set()
for node in [node1, node2]:
node.query("SYSTEM SYNC REPLICA t")
part_merge_uuid = uuid.UUID(node.query(
"SELECT uuid FROM system.parts WHERE table = 't' AND active ORDER BY name").strip())
uuids.add(part_merge_uuid)
assert part_mutate_uuid not in [uuid_zero, part_merge_uuid]
assert len(uuids) == 1, "expect the same uuid on all the replicas"
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def test_part_uuid_wal(started_cluster):
uuid_zero = uuid.UUID(bytes=b"\x00" * 16)
for ix, n in enumerate([node1, node2]):
n.query("""
CREATE TABLE t_wal(key UInt64, value UInt64)
ENGINE ReplicatedMergeTree('/clickhouse/tables/t_wal', '{}')
ORDER BY tuple()
""".format(ix))
node2.query("INSERT INTO t_wal VALUES (1, 1)")
uuids = set()
for node in [node1, node2]:
node.query("SYSTEM SYNC REPLICA t_wal")
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part_initial_uuid = uuid.UUID(node.query("SELECT uuid FROM system.parts WHERE table = 't_wal' AND active ORDER BY name").strip())
assert "InMemory" == node.query("SELECT part_type FROM system.parts WHERE table = 't_wal' AND active ORDER BY name").strip()
uuids.add(part_initial_uuid)
assert uuid_zero != part_initial_uuid
assert len(uuids) == 1, "expect the same uuid on all the replicas"
# Test detach / attach table to trigger WAL processing.
for node in [node1, node2]:
node.query("DETACH TABLE t_wal; ATTACH TABLE t_wal")
part_reattach_uuid = uuid.UUID(node.query(
"SELECT uuid FROM system.parts WHERE table = 't_wal' AND active ORDER BY name").strip())
assert part_initial_uuid == part_reattach_uuid