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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: 3.3.2
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Component/s: None
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Environment:MongoDB driver 3.3.2, local replica set running server 4.0.6. No transpilers, no Mongoose.
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The below script succeeds when using `useUnifiedTopology`, but reports a "server instance pool was destroyed" error if `useUnifiedTopology` is off.
const { MongoClient } = require('mongodb'); run().catch(err => console.log(err)); async function run() { const client = await MongoClient.connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useUnifiedTopology: true }); const db = client.db(); await client.close(true); await db.collection('Test').insertOne({ x: 1 }); console.log('done'); }
It looks like the unified topology.js doesn't do anything with the `force` option: https://github.com/mongodb/node-mongodb-native/blob/f6e854ceb7644eefd71789e084f4c46e3e2b4da3/lib/core/sdam/topology.js#L277-L278
`db.isMaster()` output:
{
"hosts" : [
"localhost:27017",
"localhost:27018",
"localhost:27019"
],
"setName" : "rs",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "localhost:27017",
"me" : "localhost:27017",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1568041368, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2019-09-09T15:02:48Z"),
"majorityOpTime" : {
"ts" : Timestamp(1568041368, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2019-09-09T15:02:48Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2019-09-09T15:02:52.734Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 7,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1568041368, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1568041368, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}