This is my fault. I forgot to skip the test when connected to mongos.
====================================================================== ERROR: test_parallel_scan_max_time_ms (test_collection.TestCollection) ---------------------------------------------------------------------- Traceback (most recent call last): File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/test/__init__.py", line 306, in wrap return f(*args, **kwargs) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/test/__init__.py", line 306, in wrap return f(*args, **kwargs) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/test/test_collection.py", line 1614, in test_parallel_scan_max_time_ms maxTimeMS=1) File "/mnt/jenkins/languages/python/r2.7/lib/python2.7/unittest/case.py", line 473, in assertRaises callableObj(*args, **kwargs) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/pymongo/collection.py", line 1297, in parallel_scan read_concern=self.read_concern) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/pymongo/collection.py", line 232, in _command collation=collation) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/pymongo/pool.py", line 419, in command collation=collation) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/pymongo/network.py", line 112, in command parse_write_concern_error=parse_write_concern_error) File "/mnt/jenkins/workspace/mongo-python-driver-nightly/extensions/with-extensions/label/linux64/mongodb_configuration/sharded/mongodb_option/noauth/mongodb_server/master-nightly/python_language_version/2.7/pymongo/helpers.py", line 210, in _check_command_response raise OperationFailure(msg % errmsg, code, response) OperationFailure: no such cmd: parallelCollectionScan