ClickHouse/tests/integration/test_system_metrics/test.py

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import time
import pytest
from helpers.cluster import ClickHouseCluster
from helpers.test_tools import assert_eq_with_retry
from helpers.network import PartitionManager
def fill_nodes(nodes, shard):
for node in nodes:
node.query(
'''
CREATE DATABASE test;
CREATE TABLE test.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;
'''.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_readonly_metrics(start_cluster):
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'") == "0\n"
with PartitionManager() as pm:
## make node1 readonly -> heal -> readonly -> heal -> detach table -> heal -> attach table
pm.drop_instance_zk_connections(node1)
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assert_eq_with_retry(node1, "SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'", "1\n", retry_count=300, sleep_time=1)
pm.heal_all()
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assert_eq_with_retry(node1, "SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'", "0\n", retry_count=300, sleep_time=1)
pm.drop_instance_zk_connections(node1)
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assert_eq_with_retry(node1, "SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'", "1\n", retry_count=300, sleep_time=1)
node1.query("DETACH TABLE test.test_table")
assert "0\n" == node1.query("SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'")
pm.heal_all()
node1.query("ATTACH TABLE test.test_table")
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assert_eq_with_retry(node1, "SELECT value FROM system.metrics WHERE metric = 'ReadonlyReplica'", "0\n", retry_count=300, sleep_time=1)
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#For LowCardinality-columns, the bytes for N rows is not N*size of 1 row.
def test_metrics_storage_buffer_size(start_cluster):
node1.query('''
CREATE TABLE test.test_mem_table
(
`str` LowCardinality(String)
)
ENGINE = Memory;
CREATE TABLE test.buffer_table
(
`str` LowCardinality(String)
)
ENGINE = Buffer('test', 'test_mem_table', 1, 600, 600, 1000, 100000, 100000, 10000000);
''')
#before flush
node1.query("INSERT INTO test.buffer_table VALUES('hello');")
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferRows'") == "1\n"
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferBytes'") == "24\n"
node1.query("INSERT INTO test.buffer_table VALUES('hello');")
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferRows'") == "2\n"
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferBytes'") == "25\n"
#flush
node1.query("OPTIMIZE TABLE test.buffer_table")
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferRows'") == "0\n"
assert node1.query("SELECT value FROM system.metrics WHERE metric = 'StorageBufferBytes'") == "0\n"