ClickHouse/tests/integration/test_async_connect_to_multiple_ips/test.py

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import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
@pytest.fixture(scope="module")
def cluster_without_dns_cache_update():
try:
cluster.start()
yield cluster
except Exception as ex:
print(ex)
finally:
cluster.shutdown()
pass
node1 = cluster.add_instance(
"node1",
main_configs=["configs/listen_host.xml"],
user_configs=["configs/enable_hedged.xml"],
with_zookeeper=True,
ipv4_address="10.5.95.11",
)
node2 = cluster.add_instance(
"node2",
main_configs=["configs/listen_host.xml"],
user_configs=["configs/enable_hedged.xml"],
with_zookeeper=True,
ipv4_address="10.5.95.12",
)
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# node1 - source with table, have invalid ipv6
# node2 - destination, doing remote query
def test(cluster_without_dns_cache_update):
node1.query(
"CREATE TABLE test(t Date, label UInt8) ENGINE = MergeTree PARTITION BY t ORDER BY label;"
)
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node1.query("INSERT INTO test SELECT toDate('2022-12-28'), 1;")
assert node1.query("SELECT count(*) FROM test") == "1\n"
wrong_ip = "2001:3984:3989::1:1118"
node2.exec_in_container(
(["bash", "-c", "echo '{} {}' >> /etc/hosts".format(wrong_ip, node1.name)])
)
node2.exec_in_container(
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(
[
"bash",
"-c",
"echo '{} {}' >> /etc/hosts".format(node1.ipv4_address, node1.name),
]
)
)
assert node1.query("SELECT count(*) from test") == "1\n"
node2.query("SYSTEM DROP DNS CACHE")
node1.query("SYSTEM DROP DNS CACHE")
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assert (
node2.query(
f"SELECT count(*) FROM remote('{node1.name}', default.test) limit 1;"
)
== "1\n"
)