anton-vinogradov commented on a change in pull request #8219:
URL: https://github.com/apache/ignite/pull/8219#discussion_r486435555



##########
File path: modules/ducktests/tests/ignitetest/services/utils/sql_util.py
##########
@@ -0,0 +1,48 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module contains JDBC driver wrapper.
+"""
+
+import random
+import jaydebeapi
+from ignitetest.services.ignite import IgniteService
+from ignitetest.utils.version import DEV_BRANCH, IgniteVersion
+
+
+def connection(ignite_service: IgniteService, ver: IgniteVersion = None):
+    """
+    :param ignite_service: IgniteService.
+    :param ver: IgniteVersion jdbc driver for connection.
+    :return Connection.
+    """
+    if ver is None:
+        ver = ignite_service.config.version
+
+    vstr = ver.vstring
+
+    if ver == DEV_BRANCH:
+        core_jar_path = str("modules/core/target/ignite-core-%s-SNAPSHOT.jar" 
% vstr)
+    else:
+        core_jar_path = str("/opt/ignite-%s/libs/ignite-core-%s.jar" % (vstr, 
vstr))
+
+    node = random.choice(ignite_service.nodes)

Review comment:
       random makes failures unreproducible

##########
File path: modules/ducktests/tests/ignitetest/tests/sql_jdbc_test.py
##########
@@ -0,0 +1,128 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module contains SQL tests using the JDBC driver.
+"""
+from ducktape.mark.resource import cluster
+
+from ignitetest.services.ignite import IgniteService
+from ignitetest.services.utils.ignite_configuration import IgniteConfiguration
+from ignitetest.services.utils.sql_util import connection
+from ignitetest.utils import ignite_versions
+from ignitetest.utils.ignite_test import IgniteTest
+from ignitetest.utils.version import DEV_BRANCH, V_2_8_1, V_2_8_0, V_2_7_6, 
IgniteVersion
+
+
+# pylint: disable=W0223
+class SqlJdbcTest(IgniteTest):
+    """
+    SQL tests using the JDBC driver.
+    """
+    NUM_NODES = 3
+
+    @cluster(num_nodes=NUM_NODES)
+    # Note: DEV version does not support earlier versions before IGNITE-13414 
resolution
+    @ignite_versions(
+        (str(DEV_BRANCH), str(DEV_BRANCH)),
+        (str(V_2_8_1), str(V_2_8_1)), (str(V_2_8_0), str(V_2_8_1)),
+        (str(V_2_8_1), str(V_2_8_0)), (str(V_2_8_0), str(V_2_8_0)),
+        (str(V_2_8_1), str(V_2_7_6)), (str(V_2_8_0), str(V_2_7_6)), 
(str(V_2_7_6), str(V_2_7_6))

Review comment:
       overcomplicated and required to be updated on release.
   how about to have some plain strategy, eg. to check previous, current, and 
next release on every version?




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