Connection pool

[Wan Li]

Hi Gurus,

Thanks for your fancy library.
Previously, I'm using https://github.com/ssssssssssss/mongodb-rest which is build on top of mongodb-native, everything works fine if < V0.9.7 except the bson parser's performace which causes some slowdown and heavy GC (~10% ticks in V8 3.6.6.8), so I upgrade to 0.9.7-0.
But I finished a few stress tests, I found it will use up my connections, I've only created a singleton for "db" itself in mongodb-rest, anything goes wrong here?

Thanks.


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[Wan Li]

Maybe I'm wrong,
It states:
Error: no open connections
    at /usr/local/lib/node_modules/mongodb/lib/mongodb/db.js:729:44
    at /usr/local/lib/node_modules/mongodb/lib/mongodb/db.js:838:11
    at Object.callback (/usr/local/lib/node_modules/mongodb/lib/mongodb/connection/server.js:101:7)
    at Array.3 (/usr/local/lib/node_modules/mongodb/lib/mongodb/connection/server.js:155:36)
    at EventEmitter._tickCallback (node.js:192:40)

Failed to get a connection?

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[Art Skvira]

Interesting.

I seem to be running into the very same issue:

Error: no open connections
at ....node_modules/mongodb/lib/mongodb/db.js:729:44
at [object Object]._executeQueryCommand (....node_modules/mongodb/
lib/mongodb/db.js:859:5)
at [object Object].nextObject (....node_modules/mongodb/lib/
mongodb/cursor.js:482:13)

Haven't looked at the code there yet though.

Any ideas what's causing it?

Thanks,
Art

[christkv]

Is this not a better question to the author of the rest wrapper for the driver ? maybe he is using the driver weirdly.

[Art Skvira]

I think I managed to reproduce that, seems to be happening when
throwing an exception from callback function to mongodb lib on save.

Will try to isolate that into reproducible test case.

Thanks

[Wan Li]

On Tue, Nov 29, 2011 at 6:20 PM, christkv <chri...@gmail.com> wrote:

Is this not a better question to the author of the rest wrapper for the driver ? maybe he is using the driver weirdly.

@christkv
I filed a bug here.
https://github.com/christkv/node-mongodb-native/issues/440
And test case:
https://gist.github.com/1475648


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