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