mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 08:40:50 +00:00
116 lines
4.1 KiB
Python
116 lines
4.1 KiB
Python
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, cleanup_thread_preferred_points_per_iteration=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(10):
|
|
node1.query("INSERT INTO test_table VALUES ('2019-08-16', {})".format(i))
|
|
assert_eq_with_retry(
|
|
node2,
|
|
"SELECT count(*) FROM test_table",
|
|
node1.query("SELECT count(*) FROM test_table"),
|
|
)
|
|
|
|
# partition the first replica from the second one and (later) from zk
|
|
pm.partition_instances(node1, node2)
|
|
|
|
# insert some parts on the second replica only, we will drop these parts
|
|
for i in range(10):
|
|
node2.query(
|
|
"INSERT INTO test_table VALUES ('2019-08-16', {})".format(10 + i)
|
|
)
|
|
|
|
pm.drop_instance_zk_connections(node1, action="REJECT --reject-with tcp-reset")
|
|
|
|
# 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(20):
|
|
node2.query(
|
|
"INSERT INTO test_table VALUES ('2019-08-16', {})".format(20 + i)
|
|
)
|
|
|
|
assert_eq_with_retry(
|
|
node2,
|
|
"SELECT value FROM system.zookeeper WHERE path='/clickhouse/tables/test1/replicated/replicas/node1' AND name='is_lost'",
|
|
"1",
|
|
retry_count=40,
|
|
)
|
|
|
|
node2.wait_for_log_line("Will mark replica node1 as lost")
|
|
|
|
# the first replica will be cloned from the second
|
|
pm.heal_all()
|
|
node2.wait_for_log_line("Sending part")
|
|
assert_eq_with_retry(
|
|
node1,
|
|
"SELECT count(*) FROM test_table",
|
|
node2.query("SELECT count(*) FROM test_table"),
|
|
)
|
|
|
|
# ensure replica was cloned
|
|
assert node1.contains_in_log("Will mimic node2")
|
|
|
|
# 2 options:
|
|
# - There wasn't a merge in node2. Then node1 should have cloned the 2 parts
|
|
# - There was a merge in progress. node1 might have cloned the new part but still has the original 2 parts
|
|
# in the replication queue until they are finally discarded with a message like:
|
|
# `Skipping action for part 201908_40_40_0 because part 201908_21_40_4 already exists.`
|
|
#
|
|
# In any case after a short while the replication queue should be empty
|
|
assert_eq_with_retry(
|
|
node1,
|
|
"SELECT count() FROM system.replication_queue WHERE type != 'MERGE_PARTS'",
|
|
"0",
|
|
)
|
|
assert_eq_with_retry(
|
|
node2,
|
|
"SELECT count() FROM system.replication_queue WHERE type != 'MERGE_PARTS'",
|
|
"0",
|
|
)
|