错误代码11000和11001之间的MongoDB差异

问题描述

根据此高度不完整列表 http://www.mongodb.org /about/contributors/error-codes/它们都与重复键有关.但是我无法收到11001错误.以下所有内容均引发11000错误:

According to this HIGHLY incomplete list http://www.mongodb.org/about/contributors/error-codes/ they're both related to duplicate keys. But I was not able to get a 11001 error. All of the following threw a 11000 error:

• 使用已经存在的_id插入文档
• 插入具有重复字段的文档，其中这些字段具有复合唯一索引
• 使用所述复合唯一索引更新文档

• inserting a document with an _id that already existed
• inserting a document with duplicate fields where the fields had a compound unique index
• updating a document with said compound unique index

因此，这完全与链接页面相反，链接页面上的11000表示_id，而11001表示更新(而不是插入).

So this goes completely against the linked page, which says 11000 is for _id and 11001 would occur on updates (not inserts).

所以我的问题是:什么时候发生11001?

So my question is: When does 11001 occur?

推荐答案

代码11001在GitHub上的2.5/2.6分支中不存在，因此，如果您尝试使用2.5版本，则无法创建它.我确实看过代码，但是找不到任何直接显示11001代码的路径.

The code 11001 does not exist in the 2.5/2.6 branch on GitHub, so if you're trying a 2.5 version than you can't create it. I did have a look at the code, but I can't find any path that shows the 11001 code either directly.

以下几行将显示代码11001:

db.so.drop();
db.so.insert( { foo: 5 } );
db.so.ensureIndex( { foo: 1 }, { unique: true } );
db.so.insert( { foo: 6 } );

预期的11000:

db.so.insert( { foo: 5 } );
E11000 duplicate key error index: test.so.$foo_1  dup key: { : 5.0 }

现在到达11001:

db.so.insert( { foo: 6 } );
db.so.update( { foo: 6 }, { $set: { foo: 5 } } );
E11000 duplicate key error index: test.so.$foo_1  dup key: { : 5.0 }

仍然是原始的11000，但是:

db.getPrevError();
{
    "err" : "E11000 duplicate key error index: test.so.$foo_1  dup key: { : 5.0 }",
    "code" : 11001,
    "n" : 0,
    "nPrev" : 1,
    "ok" : 1
}

原始文本错误消息显示E11000是一个错误: https://jira. mongodb.org/browse/SERVER-5978

That the original textual error message shows E11000 is a bug: https://jira.mongodb.org/browse/SERVER-5978

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