mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 08:40:50 +00:00
122 lines
3.3 KiB
Python
122 lines
3.3 KiB
Python
import pytest
|
|
|
|
import functools
|
|
from .common import check_on_cluster
|
|
|
|
|
|
from helpers.cluster import ClickHouseCluster
|
|
|
|
cluster = ClickHouseCluster(__file__)
|
|
|
|
shard_configs = {
|
|
"node0": "config/config.xml",
|
|
"node1": "config/config_shard1.xml",
|
|
"node2": "config/config.xml",
|
|
"node3": "config/config_shard3.xml",
|
|
"node4": "config/config.xml",
|
|
"node_observer": "config/config_observer.xml",
|
|
}
|
|
|
|
nodes = {
|
|
node_name: cluster.add_instance(
|
|
node_name,
|
|
main_configs=[shard_config],
|
|
stay_alive=True,
|
|
with_zookeeper=True,
|
|
)
|
|
for node_name, shard_config in shard_configs.items()
|
|
}
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def start_cluster():
|
|
try:
|
|
cluster.start()
|
|
yield cluster
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
def test_cluster_discovery_startup_and_stop(start_cluster):
|
|
"""
|
|
Start cluster, check nodes count in system.clusters,
|
|
then stop/start some nodes and check that it (dis)appeared in cluster.
|
|
"""
|
|
|
|
check_nodes_count = functools.partial(
|
|
check_on_cluster, what="count()", msg="Wrong nodes count in cluster"
|
|
)
|
|
check_shard_num = functools.partial(
|
|
check_on_cluster,
|
|
what="count(DISTINCT shard_num)",
|
|
msg="Wrong shard_num count in cluster",
|
|
)
|
|
|
|
# `- 1` because one node is an observer
|
|
total_shards = len(set(shard_configs.values())) - 1
|
|
total_nodes = len(nodes) - 1
|
|
|
|
check_nodes_count(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_nodes
|
|
)
|
|
check_shard_num(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_shards
|
|
)
|
|
|
|
# test ON CLUSTER query
|
|
nodes["node0"].query(
|
|
"CREATE TABLE tbl ON CLUSTER 'test_auto_cluster' (x UInt64) ENGINE = MergeTree ORDER BY x"
|
|
)
|
|
nodes["node0"].query("INSERT INTO tbl VALUES (1)")
|
|
nodes["node1"].query("INSERT INTO tbl VALUES (2)")
|
|
|
|
assert (
|
|
int(
|
|
nodes["node_observer"]
|
|
.query(
|
|
"SELECT sum(x) FROM clusterAllReplicas(test_auto_cluster, default.tbl)"
|
|
)
|
|
.strip()
|
|
)
|
|
== 3
|
|
)
|
|
|
|
# Query SYSTEM DROP DNS CACHE may reload cluster configuration
|
|
# check that it does not affect cluster discovery
|
|
nodes["node1"].query("SYSTEM DROP DNS CACHE")
|
|
nodes["node0"].query("SYSTEM DROP DNS CACHE")
|
|
|
|
check_shard_num(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_shards
|
|
)
|
|
|
|
nodes["node1"].stop_clickhouse(kill=True)
|
|
check_nodes_count(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_nodes - 1
|
|
)
|
|
|
|
# node1 was the only node in shard '1'
|
|
check_shard_num(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_shards - 1
|
|
)
|
|
|
|
nodes["node3"].stop_clickhouse()
|
|
check_nodes_count(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_nodes - 2
|
|
)
|
|
|
|
nodes["node1"].start_clickhouse()
|
|
check_nodes_count(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_nodes - 1
|
|
)
|
|
|
|
nodes["node3"].start_clickhouse()
|
|
check_nodes_count(
|
|
[nodes["node0"], nodes["node2"], nodes["node_observer"]], total_nodes
|
|
)
|
|
|
|
# regular cluster is not affected
|
|
check_nodes_count(
|
|
[nodes["node1"], nodes["node2"]], 2, cluster_name="two_shards", retries=1
|
|
)
|