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Type: Bug
Resolution: Fixed
Priority: Unknown
Fix Version/s: 4.0.1
Affects Version/s: 4.0
Component/s: Spec Comp
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Upstream Changes Summary:
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DRIVERS-1999:
Teams should resync the server selection spec tests to pull in the new test added in: https://github.com/mongodb/specifications/commit/537bb198d79d5695e735ad127ec3807689b859dd

Note that in pymongo (~~PYTHON-3027~~) I needed to update the test runner to handle the RSGhost server type. Other drivers may need to do the same:

diff --git a/test/utils_selection_tests.py b/test/utils_selection_tests.py index 0006f6f6..de10312c 100644 --- a/test/utils_selection_tests.py +++ b/test/utils_selection_tests.py @@ -63,7 +63,7 @@ def make_server_description(server, hosts): return ServerDescription(clean_node(server['address']), Hello({})) hello_response = {'ok': True, 'hosts': hosts} - if server_type != "Standalone" and server_type != "Mongos": + if server_type not in ("Standalone", "Mongos", "RSGhost", "RSGhost"): hello_response['setName'] = "rs" if server_type == "RSPrimary": @@ -72,6 +72,8 @@ def make_server_description(server, hosts): hello_response['secondary'] = True elif server_type == "Mongos": hello_response['msg'] = 'isdbgrid' + elif server_type == "RSGhost": + hello_response['isreplicaset'] = True hello_response['lastWrite'] = { 'lastWriteDate': make_last_write_date(server)
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DRIVERS-1999 : Teams should resync the server selection spec tests to pull in the new test added in: https://github.com/mongodb/specifications/commit/537bb198d79d5695e735ad127ec3807689b859dd Note that in pymongo ( PYTHON-3027 ) I needed to update the test runner to handle the RSGhost server type. Other drivers may need to do the same: diff --git a/test/utils_selection_tests.py b/test/utils_selection_tests.py index 0006f6f6..de10312c 100644 --- a/test/utils_selection_tests.py +++ b/test/utils_selection_tests.py @@ -63,7 +63,7 @@ def make_server_description(server, hosts): return ServerDescription(clean_node(server[ 'address' ]), Hello({})) hello_response = { 'ok' : True, 'hosts' : hosts} - if server_type != "Standalone" and server_type != "Mongos" : + if server_type not in ( "Standalone" , "Mongos" , "RSGhost" , "RSGhost" ): hello_response[ 'setName' ] = "rs" if server_type == "RSPrimary" : @@ -72,6 +72,8 @@ def make_server_description(server, hosts): hello_response[ 'secondary' ] = True elif server_type == "Mongos" : hello_response[ 'msg' ] = 'isdbgrid' + elif server_type == "RSGhost" : + hello_response[ 'isreplicaset' ] = True hello_response[ 'lastWrite' ] = { 'lastWriteDate' : make_last_write_date(server)

Connecting to a replica set member in the RSGhost state without directConnection=True leads to a "connection pool paused" error. For example here are some logs from a server test failure where pymongo fails running the ping command:

[j0:prim] Got error running ping command: localhost:20000: [Errno 111] Connection refused, Timeout: 0.5s, Topology Description: <TopologyDescription id: 61a575ef1927c1896571d906, topology_type: Unknown, servers: [<ServerDescription ('localhost', 20000) server_type: Unknown, rtt: None, error=AutoReconnect('localhost:20000: [Errno 111] Connection refused')>]>
ERROR:j0:prim:Got error running ping command: localhost:20000: [Errno 111] Connection refused, Timeout: 0.5s, Topology Description: <TopologyDescription id: 61a575ef1927c1896571d906, topology_type: Unknown, servers: [<ServerDescription ('localhost', 20000) server_type: Unknown, rtt: None, error=AutoReconnect('localhost:20000: [Errno 111] Connection refused')>]>
[j0:prim] Waiting to connect to mongod on port 20000.
INFO:j0:prim:Waiting to connect to mongod on port 20000.
INFO:root:Heartbeat sent to server ('localhost', 20000)
[j0:prim] {"t":{"$date":"2021-11-30T00:53:03.997+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51948","uuid":"27885a58-f675-489f-982a-0b370843109a","connectionId":1,"connectionCount":1}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:03.997+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51948","uuid":"27885a58-f675-489f-982a-0b370843109a","connectionId":1,"connectionCount":1}}
[j0:prim] {"t":{"$date":"2021-11-30T00:53:03.997+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn1","msg":"client metadata","attr":{"remote":"127.0.0.1:51948","client":"conn1","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:03.997+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn1","msg":"client metadata","attr":{"remote":"127.0.0.1:51948","client":"conn1","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:root:Heartbeat to server ('localhost', 20000) succeeded with reply {'helloOk': True, 'topologyVersion': {'processId': ObjectId('61a575ef005532b901100275'), 'counter': 0}, 'ismaster': False, 'secondary': False, 'info': 'Does not have a valid replica set config', 'isreplicaset': True, 'maxBsonObjectSize': 16777216, 'maxMessageSizeBytes': 48000000, 'maxWriteBatchSize': 100000, 'localTime': datetime.datetime(2021, 11, 30, 0, 53, 3, 997000), 'logicalSessionTimeoutMinutes': 30, 'connectionId': 1, 'minWireVersion': 0, 'maxWireVersion': 15, 'readOnly': False, 'ok': 1.0}
INFO:root:Heartbeat sent to server ('localhost', 20000)
[j0:prim] {"t":{"$date":"2021-11-30T00:53:03.998+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51950","uuid":"5cec4496-5c3a-4d13-8c53-d051c119477c","connectionId":2,"connectionCount":2}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:03.998+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51950","uuid":"5cec4496-5c3a-4d13-8c53-d051c119477c","connectionId":2,"connectionCount":2}}
[j0:prim] {"t":{"$date":"2021-11-30T00:53:03.998+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn2","msg":"client metadata","attr":{"remote":"127.0.0.1:51950","client":"conn2","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:03.998+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn2","msg":"client metadata","attr":{"remote":"127.0.0.1:51950","client":"conn2","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:root:Topology with id 61a575f01927c1896571d907 opened
INFO:root:[pool ('localhost', 20000)] pool created
INFO:root:Topology description updated for topology id 61a575f01927c1896571d907
INFO:root:Heartbeat sent to server ('localhost', 20000)
WARNING:root:No writable servers available.
WARNING:root:No readable servers available.
[j0:prim] {"t":{"$date":"2021-11-30T00:53:04.099+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51952","uuid":"fc906ba0-85c9-424f-b9a2-9df74302e83d","connectionId":3,"connectionCount":3}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:04.099+00:00"},"s":"I",  "c":"NETWORK",  "id":22943,   "ctx":"listener","msg":"Connection accepted","attr":{"remote":"127.0.0.1:51952","uuid":"fc906ba0-85c9-424f-b9a2-9df74302e83d","connectionId":3,"connectionCount":3}}
[j0:prim] {"t":{"$date":"2021-11-30T00:53:04.099+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn3","msg":"client metadata","attr":{"remote":"127.0.0.1:51952","client":"conn3","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:j0:prim:{"t":{"$date":"2021-11-30T00:53:04.099+00:00"},"s":"I",  "c":"NETWORK",  "id":51800,   "ctx":"conn3","msg":"client metadata","attr":{"remote":"127.0.0.1:51952","client":"conn3","doc":{"driver":{"name":"PyMongo","version":"4.0"},"os":{"type":"Linux","name":"Linux","architecture":"x86_64","version":"5.4.0-1047-aws"},"platform":"CPython 3.9.2.final.0"}}}
INFO:root:Heartbeat to server ('localhost', 20000) succeeded with reply {'helloOk': True, 'topologyVersion': {'processId': ObjectId('61a575ef005532b901100275'), 'counter': 0}, 'ismaster': False, 'secondary': False, 'info': 'Does not have a valid replica set config', 'isreplicaset': True, 'maxBsonObjectSize': 16777216, 'maxMessageSizeBytes': 48000000, 'maxWriteBatchSize': 100000, 'localTime': datetime.datetime(2021, 11, 30, 0, 53, 4, 99000), 'logicalSessionTimeoutMinutes': 30, 'connectionId': 3, 'minWireVersion': 0, 'maxWireVersion': 15, 'readOnly': False, 'ok': 1.0}
INFO:root:[pool ('localhost', 20000)] connection check out started
INFO:root:[pool ('localhost', 20000)] connection check out started
[j0:prim] Got error running ping command: localhost:20000: connection pool paused
INFO:root:Heartbeat sent to server ('localhost', 20000)
ERROR:j0:prim:Got error running ping command: localhost:20000: connection pool paused
[j0:prim] Waiting to connect to mongod on port 20000.
INFO:j0:prim:Waiting to connect to mongod on port 20000.
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AutoReconnect "connection pool paused" errors are surprising here. Instead I would expect a ServerSelectionTimeoutError.

is caused by

PYTHON-2462 Implement and test connection pool paused state

Closed

PYTHON-2679 Auto discover replica sets by default

Closed

is duplicated by

MOTOR-863 Add server selection spec test to ensure that RSGhost servers are not selectable

Closed

related to

SERVER-61794 Upgrade resmoke's pymongo to 4.2.0

Closed

split from

DRIVERS-1999 Add server selection spec test to ensure that RSGhost servers are not selectable

Implementing

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