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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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None
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Affects Version/s: 2.2.29
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Component/s: MongoDB 3.4
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Environment:Mongo server v3.4.5
Lib mongodb v2.2.29
Node v8.1.2
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Empty show more show less
I get very random behaviors from the driver when executing a lot of conccurent queries simultaniously.
When executing a batch of ~1000 parallel queries, I get two different behaviours:
- The task succeeds (~5% of the time)
- I get the following error (with longjohn enabled):
/home/admin/parser/attempt/node_modules/mongodb/lib/utils.js:120
return value2 ? callback(err, value1, value2) : callback(err, value1);
^
TypeError: callback is not a function
at /home/admin/parser/attempt/node_modules/mongodb/lib/cursor.js:779:15
at handleCallback (/home/admin/parser/attempt/node_modules/mongodb/lib/utils.js:120:56)
at /home/admin/parser/attempt/node_modules/mongodb/lib/cursor.js:745:22
at handleCallback (/home/admin/parser/attempt/node_modules/mongodb/lib/utils.js:120:56)
at /home/admin/parser/attempt/node_modules/mongodb/lib/cursor.js:681:20
at nextFunction (/home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:521:12)
at /home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:593:7
at queryCallback (/home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:232:18)
at handleOperationCallback (/home/admin/parser/attempt/node_modules/mongodb-core/lib/connection/pool.js:474:7)
at /home/admin/parser/attempt/node_modules/mongodb-core/lib/connection/pool.js:504:9
---------------------------------------------
at handleCallback (/home/admin/parser/attempt/node_modules/mongodb/lib/utils.js:123:13)
at /home/admin/parser/attempt/node_modules/mongodb/lib/cursor.js:745:22
at handleCallback (/home/admin/parser/attempt/node_modules/mongodb/lib/utils.js:120:56)
at /home/admin/parser/attempt/node_modules/mongodb/lib/cursor.js:681:20
at nextFunction (/home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:521:12)
at /home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:593:7
at queryCallback (/home/admin/parser/attempt/node_modules/mongodb-core/lib/cursor.js:232:18)
at handleOperationCallback (/home/admin/parser/attempt/node_modules/mongodb-core/lib/connection/pool.js:474:7)
at /home/admin/parser/attempt/node_modules/mongodb-core/lib/connection/pool.js:504:9
admin@ip-172-33-1-249:~/parser/attempt$ vi node_modules/mongodb/lib/utils.js
The task consists of a Promise.all([]) containing async function calls containing awaited queries (using async/await keywords)... So I am not using any callbacks, only promises.
I am quite confused as the same task sometimes succeeds and sometime fails for no apparent reason.
Because of the error message, I have tried wrapping the line triggering the error with a if (typeof callback === 'function') but I still get the same error!!
if(callback && typeof callback === 'function') {
return value2 ? callback(err, value1, value2) : callback(err, value1);
}
Server-side, the last message I have is the following:
[conn1225] AssertionException handling request, closing client connection: 6 socket exception [SEND_ERROR] for 127.0.0.1:34316
Note that if I separate my big 1000 queries call into smaller batches, it fixes the issue.