Details
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Type:
Bug
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Status: Closed
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Priority:
Major - P3
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Resolution: Fixed
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Affects Version/s: 3.6.3
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Fix Version/s: 3.6.4
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Component/s: None
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Labels:None
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Epic Link:
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Case:
Description
I'm not sure if this would be a regression from 3.6.x or a bug that was fixed in 3.6.x however given the following MongoDB cluster (single node replica set running in docker) the test will succeed in 3.5 and fail in 3.6.
docker-compose.yml
version: "3"
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services:
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mongodb:
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image: mongo:4.4.1-bionic
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environment:
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MONGO_REPLICA_SET_NAME: rs0
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expose:
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- 27017
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ports:
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- "27017:27017"
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healthcheck:
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test: test $$(echo "rs.initiate().ok || rs.slaveOk().ok || rs.status().ok" | mongo --quiet) -eq 1
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interval: 10s
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start_period: 30s
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entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
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index.js
const { MongoClient } = require('mongodb'); |
|
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const url = "mongodb://127.0.0.1:27017/test?replSet=rs0'" |
const options = {
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useNewUrlParser: true, |
useUnifiedTopology: true |
};
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|
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console.log('connecting to', url); |
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var client = new MongoClient(url, options); |
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client.on('serverDescriptionChanged', function(event) { |
console.log('received serverDescriptionChanged'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('serverHeartbeatStarted', function(event) { |
console.log('received serverHeartbeatStarted'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
|
client.on('serverHeartbeatSucceeded', function(event) { |
console.log('received serverHeartbeatSucceeded'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('serverHeartbeatFailed', function(event) { |
console.log('received serverHeartbeatFailed'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('serverOpening', function(event) { |
console.log('received serverOpening'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('serverClosed', function(event) { |
console.log('received serverClosed'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('topologyOpening', function(event) { |
console.log('received topologyOpening'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('topologyClosed', function(event) { |
console.log('received topologyClosed'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.on('topologyDescriptionChanged', function(event) { |
console.log('received topologyDescriptionChanged'); |
console.log(JSON.stringify(event, null, 2)); |
});
|
|
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client.connect()
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.then(() => {
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console.log('ok') |
}) .catch((err) => console.error('error', err)); |
To run the test:
docker-compose up -d
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npm install mongodb@3.5.10 --save && node index.js |
npm install mongodb@3.6.3 --save && node index.js |
The test above shows the serverDescriptionChanged events differ, and as a result the serverOpening event is targeting an IP address (in 3.5.x) as opposed to a hostname (in 3.6.x)
// 3.5 Topology Events
|
|
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received serverOpening
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{
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"topologyId": 0,
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"address": "127.0.0.1:27017"
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}
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received serverHeartbeatStarted
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{
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"connectionId": "127.0.0.1:27017"
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}
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received serverHeartbeatSucceeded
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{
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"connectionId": "127.0.0.1:27017",
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"duration": 26,
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"reply": {
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"topologyVersion": {
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"processId": "5faaebc4119ee19f2d5dccf5",
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"counter": 6
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},
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"hosts": [
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"mongodb:27017"
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],
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"setName": "rs0",
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"setVersion": 1,
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"ismaster": true,
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"secondary": false,
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"primary": "mongodb:27017",
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"me": "mongodb:27017",
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"electionId": "7fffffff0000000000000002",
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"lastWrite": {
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"opTime": {
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"ts": "6893584559196078081",
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"t": 2
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},
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"lastWriteDate": "2020-11-10T19:48:50.000Z",
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"majorityOpTime": {
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"ts": "6893584559196078081",
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"t": 2
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},
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"majorityWriteDate": "2020-11-10T19:48:50.000Z"
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},
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"maxBsonObjectSize": 16777216,
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"maxMessageSizeBytes": 48000000,
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"maxWriteBatchSize": 100000,
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"localTime": "2020-11-10T19:48:53.620Z",
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"logicalSessionTimeoutMinutes": 30,
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"connectionId": 81,
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"minWireVersion": 0,
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"maxWireVersion": 9,
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"readOnly": false,
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"ok": 1,
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"$clusterTime": {
|
"clusterTime": "6893584559196078081",
|
"signature": {
|
"hash": {
|
"type": "Buffer",
|
"data": [
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0
|
]
|
},
|
"keyId": 0
|
}
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},
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"operationTime": "6893584559196078081"
|
}
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}
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received serverDescriptionChanged
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{
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"topologyId": 0,
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"address": "127.0.0.1:27017",
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"previousDescription": {
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"address": "127.0.0.1:27017",
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"roundTripTime": -1,
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"lastUpdateTime": 1322597506,
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"lastWriteDate": null,
|
"opTime": null,
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"type": "Unknown",
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"minWireVersion": 0,
|
"maxWireVersion": 0,
|
"hosts": [],
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"passives": [],
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"arbiters": [],
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"tags": []
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},
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"newDescription": {
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"address": "127.0.0.1:27017",
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"roundTripTime": 26,
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"lastUpdateTime": 1322597542,
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"lastWriteDate": "2020-11-10T19:48:50.000Z",
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"opTime": {
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"ts": "6893584559196078081",
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"t": 2
|
},
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"type": "RSPrimary",
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"minWireVersion": 0,
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"maxWireVersion": 9,
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"maxBsonObjectSize": 16777216,
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"maxMessageSizeBytes": 48000000,
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"maxWriteBatchSize": 100000,
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"me": "mongodb:27017",
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"hosts": [
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"mongodb:27017"
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],
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"passives": [],
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"arbiters": [],
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"tags": [],
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"setName": "rs0",
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"setVersion": 1,
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"electionId": "7fffffff0000000000000002",
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"primary": "mongodb:27017",
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"logicalSessionTimeoutMinutes": 30,
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"$clusterTime": {
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"clusterTime": "6893584559196078081",
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"signature": {
|
"hash": {
|
"type": "Buffer",
|
"data": [
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0
|
]
|
},
|
"keyId": 0
|
}
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}
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}
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}
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// 3.6 Topology Events
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received serverOpening
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{
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"topologyId": 0,
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"address": "127.0.0.1:27017"
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}
|
received serverHeartbeatStarted
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{
|
"connectionId": "127.0.0.1:27017"
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}
|
received serverHeartbeatSucceeded
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{
|
"connectionId": "127.0.0.1:27017",
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"duration": 30,
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"reply": {
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"topologyVersion": {
|
"processId": "5faaebc4119ee19f2d5dccf5",
|
"counter": 6
|
},
|
"hosts": [
|
"mongodb:27017"
|
],
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"setName": "rs0",
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"setVersion": 1,
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"ismaster": true,
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"secondary": false,
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"primary": "mongodb:27017",
|
"me": "mongodb:27017",
|
"electionId": "7fffffff0000000000000002",
|
"lastWrite": {
|
"opTime": {
|
"ts": "6893584730994769921",
|
"t": 2
|
},
|
"lastWriteDate": "2020-11-10T19:49:30.000Z",
|
"majorityOpTime": {
|
"ts": "6893584730994769921",
|
"t": 2
|
},
|
"majorityWriteDate": "2020-11-10T19:49:30.000Z"
|
},
|
"maxBsonObjectSize": 16777216,
|
"maxMessageSizeBytes": 48000000,
|
"maxWriteBatchSize": 100000,
|
"localTime": "2020-11-10T19:49:39.876Z",
|
"logicalSessionTimeoutMinutes": 30,
|
"connectionId": 86,
|
"minWireVersion": 0,
|
"maxWireVersion": 9,
|
"readOnly": false,
|
"ok": 1,
|
"$clusterTime": {
|
"clusterTime": "6893584730994769921",
|
"signature": {
|
"hash": {
|
"type": "Buffer",
|
"data": [
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0,
|
0
|
]
|
},
|
"keyId": 0
|
}
|
},
|
"operationTime": "6893584730994769921"
|
}
|
}
|
received serverDescriptionChanged
|
{
|
"topologyId": 0,
|
"address": "127.0.0.1:27017",
|
"previousDescription": {
|
"address": "127.0.0.1:27017",
|
"roundTripTime": -1,
|
"lastUpdateTime": 1322643760,
|
"lastWriteDate": null,
|
"opTime": null,
|
"type": "Unknown",
|
"minWireVersion": 0,
|
"maxWireVersion": 0,
|
"hosts": [],
|
"passives": [],
|
"arbiters": [],
|
"tags": []
|
}
|
}
|