mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 18:12:02 +00:00
48 lines
1.3 KiB
Python
48 lines
1.3 KiB
Python
import os
|
|
import pytest
|
|
import shutil
|
|
import time
|
|
from helpers.cluster import ClickHouseCluster
|
|
|
|
# Tests that SYSTEM RELOAD ASYNCHRONOUS METRICS works.
|
|
|
|
# Config default.xml sets a large refresh interval of asynchronous metrics, so that the periodic updates don't interfere with the manual
|
|
# update below.
|
|
cluster = ClickHouseCluster(__file__)
|
|
node = cluster.add_instance(
|
|
"node",
|
|
main_configs=["configs/default.xml"],
|
|
stay_alive=True,
|
|
)
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def start_cluster():
|
|
try:
|
|
cluster.start()
|
|
yield cluster
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
|
|
CONFIG_DIR = os.path.join(SCRIPT_DIR, "configs")
|
|
|
|
|
|
def test_system_reload_async_metrics(start_cluster):
|
|
node.query("SYSTEM DROP QUERY CACHE")
|
|
|
|
res1 = node.query(
|
|
"SELECT value FROM system.asynchronous_metrics WHERE metric = 'NumberOfTables'"
|
|
)
|
|
|
|
# create table and test that the table creation is reflected in the asynchronous metrics
|
|
node.query("CREATE TABLE tab (col UInt64) ENGINE MergeTree ORDER BY tuple()")
|
|
|
|
node.query("SYSTEM RELOAD ASYNCHRONOUS METRICS")
|
|
|
|
res2 = node.query(
|
|
"SELECT value FROM system.asynchronous_metrics WHERE metric = 'NumberOfTables'"
|
|
)
|
|
assert int(res1.rstrip()) + 1 == int(res2.rstrip())
|