ClickHouse/tests/integration/test_consistent_parts_after_clone_replica/test.py

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2019-08-16 16:14:08 +00:00
import pytest
from helpers.cluster import ClickHouseCluster
from helpers.network import PartitionManager
from helpers.test_tools import assert_eq_with_retry
def fill_nodes(nodes, shard):
for node in nodes:
node.query(
'''
CREATE DATABASE test;
CREATE TABLE test_table(date Date, id UInt32)
ENGINE = ReplicatedMergeTree('/clickhouse/tables/test{shard}/replicated', '{replica}')
ORDER BY id PARTITION BY toYYYYMM(date)
SETTINGS min_replicated_logs_to_keep=3, max_replicated_logs_to_keep=5, cleanup_delay_period=0, cleanup_delay_period_random_add=0;
'''.format(shard=shard, replica=node.name))
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
@pytest.fixture(scope="module")
def start_cluster():
try:
cluster.start()
fill_nodes([node1, node2], 1)
yield cluster
except Exception as ex:
print ex
finally:
cluster.shutdown()
def test_inconsistent_parts_if_drop_while_replica_not_active(start_cluster):
with PartitionManager() as pm:
# insert into all replicas
for i in range(50):
node1.query("INSERT INTO test_table VALUES ('2019-08-16', {})".format(i))
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assert_eq_with_retry(node2, "SELECT count(*) FROM test_table", node1.query("SELECT count(*) FROM test_table"))
# disable network on the first replica
pm.partition_instances(node1, node2)
pm.drop_instance_zk_connections(node1)
# drop all parts on the second replica
node2.query_with_retry("ALTER TABLE test_table DROP PARTITION 201908")
assert_eq_with_retry(node2, "SELECT count(*) FROM test_table", "0")
# insert into the second replica
# DROP_RANGE will be removed from the replication log and the first replica will be lost
for i in range(50):
node2.query("INSERT INTO test_table VALUES ('2019-08-16', {})".format(50 + i))
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# the first replica will be cloned from the second
pm.heal_all()
assert_eq_with_retry(node1, "SELECT count(*) FROM test_table", node2.query("SELECT count(*) FROM test_table"))