node.js - nodejs connect mongo have memory leak -

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in node.js use expressjs , when connect mongodb, have trouble , have no idea why happens. search it's unclear.

(node) warning: possible eventemitter memory leak detected. 11 reconnect listeners added. use emitter.setmaxlisteners() increase limit. trace     @ addlistener (events.js:179:15)     @ server.connect (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/lib/server.js:291:17)     @ open (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/lib/db.js:206:19)     @ db.open (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/lib/db.js:229:44)     @ function.user.get (/home/repository/nodejs/blog/n-blog/models/user.js:55:10)     @ context.<anonymous> (/home/repository/nodejs/blog/n-blog/test/models/userspec.js:63:9)     @ test.runnable.run (/home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runnable.js:233:15)     @ runner.runtest (/home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:390:10)     @ /home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:473:12     @ next (/home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:315:14)     @ /home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:325:7     @ next (/home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:260:23)     @ immediate._onimmediate (/home/repository/nodejs/blog/n-blog/node_modules/mocha/lib/runner.js:292:5)     @ processimmediate [as _immediatecallback] (timers.js:367:17) (node) warning: possible eventemitter memory leak detected. 11 destroy listeners added. use emitter.setmaxlisteners() increase limit. trace     @ addlistener (events.js:179:15)     @ once (events.js:204:8)     @ connecthandler (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/lib/server.js:265:19)     @ g (events.js:199:16)     @ emit (events.js:107:17)     @ /home/repository/nodejs/blog/n-blog/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:399:23     @ /home/repository/nodejs/blog/n-blog/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:806:13     @ callbacks.emit (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:95:3)     @ null.messagehandler (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:246:23)     @ socket.<anonymous> (/home/repository/nodejs/blog/n-blog/node_modules/mongodb/node_modules/mongodb-core/lib/connection/connection.js:262:22)     @ socket.emit (events.js:107:17)     @ readableaddchunk (_stream_readable.js:163:16)     @ socket.readable.push (_stream_readable.js:126:10)     @ tcp.onread (net.js:538:20)

for temporary, find fixing works me. still don't know underlying happened https://stackoverflow.com/a/26176922/2284020


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