thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-24 00:22:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Improve integration test test_total_max_threads_limit_reached

Browse Source
This commit is contained in:
Roman Vasin 2022-05-25 19:26:56 +03:00
parent 2491213166
commit a88862c653
1 changed files with 36 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
tests/integration/test_total_max_threads/test.py
View File

@ -3,6 +3,7 @@ from helpers.cluster import ClickHouseCluster
import threading
import time
from helpers.client import QueryRuntimeException
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance(
@ -75,34 +76,48 @@ def test_total_max_threads_defined_1(started_cluster):
)
# In config_limit_reached.xml there is total_max_threads=10
# Background query starts in a separate thread to reach this limit.
# When this limit is reached the foreground query gets less than 5 queries despite the fact that it has settings max_threads=5
def test_total_max_threads_limit_reached(started_cluster):
def thread_select():
def background_query():
try:
node4.query(
"SELECT count(*) FROM numbers_mt(1e11) settings max_threads=100",
query_id="background_query",
)
except QueryRuntimeException:
pass
another_thread = threading.Thread(target=thread_select)
another_thread.start()
background_thread = threading.Thread(target=background_query)
background_thread.start()
while (
node4.query(
"SELECT count(*) FROM system.processes where query_id = 'background_query'"
)
== "0\n"
):
def limit_reached():
s_count = node4.query(
"SELECT sum(length(thread_ids)) FROM system.processes"
).strip()
if s_count:
count = int(s_count)
else:
count = 0
return count >= 10
while not limit_reached():
time.sleep(0.1)
node4.query(
"SELECT count(*) FROM numbers_mt(10000000) settings max_threads=5",
query_id="test_total_max_threads_4",
)
another_thread.join()
node4.query("SYSTEM FLUSH LOGS")
assert (
node4.query(
s_count = node4.query(
"select length(thread_ids) from system.query_log where current_database = currentDatabase() and type = 'QueryFinish' and query_id = 'test_total_max_threads_4'"
)
== "2\n"
)
node4.query("KILL QUERY WHERE user = 'default' SYNC")
).strip()
if s_count:
count = int(s_count)
else:
count = 0
assert count < 5
node4.query("KILL QUERY WHERE query_id = 'background_query' SYNC")
background_thread.join()