Files
impala/tests/custom_cluster/test_frontend_connection_limit.py
Riza Suminto 00dc79adf6 IMPALA-13907: Remove reference to create_beeswax_client
This patch replace create_beeswax_client() reference to
create_hs2_client() or vector-based client creation to prepare towards
hs2 test migration.

test_session_expiration_with_queued_query is changed to use impala.dbapi
directly from Impyla due to limitation in ImpylaHS2Connection.

TestAdmissionControllerRawHS2 is migrated to use hs2 as default test
protocol.

Modify test_query_expiration.py to set query option through client
instead of SET query. test_query_expiration is slightly modified due to
behavior difference in hs2 ImpylaHS2Connection.

Remove remaining reference to BeeswaxConnection.QueryState.

Fixed a bug in ImpylaHS2Connection.wait_for_finished_timeout().

Fix some easy flake8 issues caught thorugh this command:
git show HEAD --name-only | grep '^tests.*py' \
  | xargs -I {} impala-flake8 {} \
  | grep -e U100 -e E111 -e E301 -e E302 -e E303 -e F...

Testing:
- Pass exhaustive tests.

Change-Id: I1d84251835d458cc87fb8fedfc20ee15aae18d51
Reviewed-on: http://gerrit.cloudera.org:8080/22700
Reviewed-by: Riza Suminto <riza.suminto@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
2025-03-29 18:37:45 +00:00

85 lines
3.2 KiB
Python

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# under the License.
from __future__ import absolute_import, division, print_function
import pytest
from threading import Thread
from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
# This custom cluster test exercises the behavior of the front end thrift
# server on how a new client connection request is handled, after the maximum
# number of front end service threads (--fe_service_threads) has been
# allocated. If "--accepted_client_cnxn_timeout" > 0, new connection
# requests are rejected if they wait in the accepted queue for more than the
# the specified timeout.
# See IMPALA-7800.
class TestFrontendConnectionLimit(CustomClusterTestSuite):
@classmethod
def get_workload(self):
return 'functional-query'
@classmethod
def add_test_dimensions(cls):
super(TestFrontendConnectionLimit, cls).add_test_dimensions()
def _connect_and_query(self, query, impalad):
with impalad.service.create_hs2_client() as client:
client.execute(query)
@pytest.mark.execute_serially
@CustomClusterTestSuite.with_args(
impalad_args="--fe_service_threads=1 --accepted_client_cnxn_timeout=0")
def test_no_connection_is_rejected(self):
""" IMPALA-7800: New connection request should not be rejected if
--accepted_client_cnxn_timeout=0"""
query = "select sleep(2000)"
impalad = self.cluster.get_any_impalad()
q1 = Thread(target=self._connect_and_query, args=(query, impalad,))
q2 = Thread(target=self._connect_and_query, args=(query, impalad,))
q1.start()
q2.start()
q1.join()
q2.join()
@pytest.mark.execute_serially
@CustomClusterTestSuite.with_args(
impalad_args="--fe_service_threads=1 --accepted_client_cnxn_timeout=5000")
def test_server_busy(self):
""" IMPALA-7800: Reject new incoming connections if --accepted_client_cnxn_timeout > 0
and the request spent too much time waiting in the accepted queue."""
client = self.create_impala_client()
client.execute_async("select sleep(7000)")
# This step should fail to open a session.
# create_impala_client() does not throw an error on connection failure
# The only way to detect the connection is invalid is to perform a
# query in it
client1 = self.create_impala_client()
caught_exception = False
try:
client1.execute("select sleep(8000)")
except Exception:
caught_exception = True
client.close()
assert caught_exception, 'Query on client1 did not fail as expected'