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client_request_metrics_local_remote_test.py
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from dtest import Tester, create_ks
from tools.jmxutils import JolokiaAgent, make_mbean
import pytest
since = pytest.mark.since
@since('4.1')
class TestClientRequestMetricsLocalRemote(Tester):
def test_write_and_read(self):
session, node = setup_test(self)
read_metrics = ClientRequestMetricsContainer(node, 'Read')
write_metrics = ClientRequestMetricsContainer(node, 'Write')
# Get initial results:
r1_r = ClientRequestMetricsSnapshot(read_metrics)
r1_w = ClientRequestMetricsSnapshot(write_metrics)
# Run Write test:
for i in murmur3_hashes.keys():
session.execute(
"INSERT INTO ks.test (id, ord, val) VALUES ({}, 1, 'aaaa');".format(i)
)
# Collect results:
r2_r = ClientRequestMetricsSnapshot(read_metrics)
r2_w = ClientRequestMetricsSnapshot(write_metrics)
# Run Read test:
for i in murmur3_hashes.keys():
session.execute(
"SELECT (id, ord, val) FROM ks.test WHERE id={};".format(i)
)
# Collect results:
r3_r = ClientRequestMetricsSnapshot(read_metrics)
r3_w = ClientRequestMetricsSnapshot(write_metrics)
assert 0 <= (r2_w.remote_requests - r1_w.remote_requests)
assert 0 <= (r2_r.local_requests - r1_r.local_requests)
assert 0 == (r2_r.remote_requests - r1_r.remote_requests)
assert 0 == (r3_w.local_requests - r2_w.local_requests)
assert 0 == (r3_w.remote_requests - r2_w.remote_requests)
assert 0 < (r3_r.remote_requests - r2_r.remote_requests)
def test_batch_and_slice(self):
session, node = setup_test(self)
read_metrics = ClientRequestMetricsContainer(node, 'Read')
write_metrics = ClientRequestMetricsContainer(node, 'Write')
# Get initial results:
r1_r = ClientRequestMetricsSnapshot(read_metrics)
r1_w = ClientRequestMetricsSnapshot(write_metrics)
# Run batch test:
query = 'BEGIN BATCH '
for i in murmur3_hashes.keys():
for y in range(0, 50):
query += "INSERT INTO ks.test (id, ord, val) VALUES ({}, {}, 'aaa')".format(i, y)
query += 'APPLY BATCH;'
session.execute(query)
# Collect results:
r2_r = ClientRequestMetricsSnapshot(read_metrics)
r2_w = ClientRequestMetricsSnapshot(write_metrics)
# Run read range test:
for i in murmur3_hashes.keys():
session.execute("""
SELECT (id, ord, val) FROM ks.test
WHERE id={}
AND ord > 0
AND ord < 100;
""".format(i))
# Collect results:
r3_r = ClientRequestMetricsSnapshot(read_metrics)
r3_w = ClientRequestMetricsSnapshot(write_metrics)
assert 0 <= (r2_w.remote_requests - r1_w.remote_requests)
assert 0 <= (r2_r.local_requests - r1_r.local_requests)
assert 0 == (r2_r.remote_requests - r1_r.remote_requests)
assert 0 == (r3_w.local_requests - r2_w.local_requests)
assert 0 == (r3_w.remote_requests - r2_w.remote_requests)
assert 0 < (r3_r.remote_requests - r2_r.remote_requests)
def test_paxos(self):
session, node = setup_test(self)
read_metrics = ClientRequestMetricsContainer(node, 'Read')
write_metrics = ClientRequestMetricsContainer(node, 'Write')
# Get initial results:
r1_r = ClientRequestMetricsSnapshot(read_metrics)
r1_w = ClientRequestMetricsSnapshot(write_metrics)
# Run write test:
for i in murmur3_hashes.keys():
session.execute(
"UPDATE ks.test SET val='aaa' WHERE id={} AND ord=0".format(i)
)
# Collect results:
r2_r = ClientRequestMetricsSnapshot(read_metrics)
r2_w = ClientRequestMetricsSnapshot(write_metrics)
assert 0 <= (r2_w.remote_requests - r1_w.remote_requests)
assert 0 <= (r2_r.local_requests - r1_r.local_requests)
assert 0 == (r2_r.remote_requests - r1_r.remote_requests)
murmur3_hashes = {
5: -7509452495886106294,
10: -6715243485458697746,
16: -5477287129830487822,
13: -5034495173465742853,
11: -4156302194539278891,
1: -4069959284402364209,
19: -3974532302236993209,
8: -3799847372828181882,
2: -3248873570005575792,
4: -2729420104000364805,
18: -2695747960476065067,
15: -1191135763843456182,
20: 1388667306199997068,
7: 1634052884888577606,
6: 2705480034054113608,
9: 3728482343045213994,
14: 4279681877540623768,
17: 5467144456125416399,
12: 8582886034424406875,
3: 9010454139840013625
}
class ClientRequestMetricsContainer:
def __init__(self, node, scope):
self.node = node
self.local_requests_mbean = make_mbean(
'metrics',
type='ClientRequest',
scope=scope,
name='LocalRequests'
)
self.remote_requests_mbean = make_mbean(
'metrics',
type='ClientRequest',
scope=scope,
name='RemoteRequests'
)
def get_local_requests(self):
with JolokiaAgent(self.node) as jmx:
return jmx.read_attribute(self.local_requests_mbean, 'Count')
def get_remote_requests(self):
with JolokiaAgent(self.node) as jmx:
return jmx.read_attribute(self.remote_requests_mbean, 'Count')
class ClientRequestMetricsSnapshot:
def __init__(self, client_request_metrics):
self.local_requests = client_request_metrics.get_local_requests()
self.remote_requests = client_request_metrics.get_remote_requests()
def setup_schema(session):
create_ks(session, 'ks', 1)
session.execute("CREATE TABLE test (id int,ord int,val varchar,PRIMARY KEY (id, ord));""")
def setup_test(obj):
cluster = obj.cluster
cluster.populate(2)
node = cluster.nodelist()[0]
node2 = cluster.nodelist()[1]
cluster.start()
session = obj.patient_exclusive_cql_connection(node)
obj.patient_exclusive_cql_connection(node2)
setup_schema(session)
return session, node