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