小编tao*_*iko的帖子

MongoDB 3.6 版

执行此操作时，我收到了重复的密钥消息。实际问题是什么？

mongos> db.setup.findAndModify({
... query : {"_id" : ObjectId("5b3c7abbea95705803084cad")},
... update : {$set : { "test" : "xxxx" }},
... upsert : true
... })
2018-07-06T10:13:22.749+0000 E QUERY    [thread1] Error: findAndModifyFailed failed: {
    "ok" : 0,
    "errmsg" : "E11000 duplicate key error collection: testdb.setup index: name dup key: { : null }",
    "code" : 11000,
    "codeName" : "DuplicateKey",
    "$clusterTime" : {
        "clusterTime" : Timestamp(1530872002, 603),
        "signature" : {
            "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
            "keyId" : NumberLong(0)
        }
    },
    "operationTime" …