Node.js + MongoDB：MongoError：cursor killed或timed out [英] Node.js + MongoDB : MongoError: cursor killed or timed out

问题描述

当查找大量文档并使用 cursor.nextObject 逐个遍历它们时，回调最终会返回未定义的结果和错误 MongoError ：cursor killed或timed out 。整个错误消息是：

When finding a lot of documents and iterating over them using cursor.nextObject, one by one, the callback eventually returns undefined result and error MongoError: cursor killed or timed out. Whole error message is:

[MongoError: cursor killed or timed out] 
name: 'MongoError', 
message: 'cursor killed or timed out'

如何避免游标被杀死？ / p>

How to avoid the cursor to be killed?

推荐答案

根据 Mongodb的官方文档，可选参数 timeout 可以设置为 false 。

According to Mongodb's official doc, the optional param timeout can be set to false.

db.collection('mycollection').find({}, {timeout:false}, function(err, cursor) {
    if (!err) {
         // Iterate safely on your cursor here
    } else {
        console.log(err);
    }
});

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