我在Node.js中发生Event Emitter警告问题。我正尝试使用Mongoskin连接到MongoDB。您能否向我解释为什么警告正在发生以及如何避免?连接到MongoDB时发出警告:“警告:可能发生EventEmitter内存泄漏”
for (j in self.channel_data) {
(function(channel, index) {
mongo.collection('revenue_share')
.find({ approved: true,
entity_id: channel.user_channel_id,
date_effective: {$lte: +new Date(self.report_data[channel.report_id].end_date).getTime()}
}, selectables)
.sort({date_effective : -1})
.toArray(function (err, _data) {
if (err || !_data.length) {
return self.fetched_rev_share(channel, null);
}
return self.fetched_rev_share(channel, _data[0]);
});
})(self.channel_data[j], j);
}
这是显示警告:
(node) warning: possible EventEmitter memory leak detected. 51 listeners added. Use emitter.setMaxListeners() to increase limit.
Trace
at EventEmitter.addListener (events.js:160:15)
at EventEmitter.once (events.js:185:8)
at SkinClass.open (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/utils.js:156:23)
at SkinClass.SkinCollection._open (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/collection.js:49:17)
at SkinClass.open (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/utils.js:162:14)
at SkinClass.SkinCursor._open (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/cursor.js:28:25)
at SkinClass.open (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/utils.js:162:14)
at SkinClass.(anonymous function) [as sort] (/Users/ninz/Sites/freedom-node-backend/node_modules/mongoskin/lib/utils.js:116:14)
at /Users/ninz/Sites/freedom-node-backend/helpers/channel_earnings.js:61:18
at Query.loop_to_channels [as _callback] (/Users/ninz/Sites/freedom-node-backend/helpers/channel_earnings.js:70:7)