Mongodb Mongoimport太大:解析错误失败

Question

我正在尝试导入到MongoDB 70mb的json文件是有效的。但是，我在循环中一次又一次地得到这个错误：

 01 11:42:20 exception:BSON representation of supplied JSON is too large: Failure parsing JSON string near: "name": "L
 01 11:42:20
 01 11:42:20 Assertion: 10340:Failure parsing JSON string near: "link": "h
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 kernel32.dll       BaseThreadInitThunk+0x12
 01 11:42:20 ntdll.dll          RtlInitializeExceptionChain+0xef
 01 11:42:20 exception:BSON representation of supplied JSON is too large: Failure parsing JSON string near: "link": "h
 01 11:42:20
 01 11:42:20 Assertion: 10340:Failure parsing JSON string near: }
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 kernel32.dll       BaseThreadInitThunk+0x12
 01 11:42:20 ntdll.dll          RtlInitializeExceptionChain+0xef
 01 11:42:20 exception:BSON representation of supplied JSON is too large: Failure parsing JSON string near: }
 01 11:42:20
 01 11:42:20 Assertion: 10340:Failure parsing JSON string near: ],
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 mongoimport.exe    ???
 01 11:42:20 kernel32.dll       BaseThreadInitThunk+0x12
 01 11:42:20 ntdll.dll          RtlInitializeExceptionChain+0xef
 01 11:42:20 exception:BSON representation of supplied JSON is too large: Failure parsing JSON string near: ],

我的JSON (只有一个很小的例子)包含很多像这样的结构：

[ 
{
   "data": [
         "id": "xxxxxxxxxxxxxxxxxx",
         "from": {
            "name": "yyyyyyyyyyy",
            "id": "1111111111111"
         },
         "to": {
            "data": [
               {
                  "version": 1,
                  "name": "1111111111111",
                  "id": "1111111111111"
               }
            ]
         },
         "picture": "fffffffffffffffffffffff.jpg",
         "link": "http://www.youtube.com/watch?v=qqqqqqqqqqqqq",
         "source": "http://www.youtube.com/v/qqqqqqqqqqqqq?version=3&autohide=1&autoplay=1",
         "name": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
         "description": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx...",
         "icon": "http://static.ak.fbcdn.net/rsrc.php/v2/xxx/r/dddd",
         "actions": [
            {
               "name": "Comment",
               "link": "http://www.example.com/1111111111111/posts/1111111111111"
            },
            {
               "name": "Like",
               "link": "http://www.example.com/1111111111111/posts/1111111111111"
            }
         ],
         "privacy": {
            "value": ""
         },
         "type": "video",
         "created_time": 1356953890,
         "updated_time": 1356953890,
         "likes": {
            "data": [
               {
                  "name": "jjj ",
                  "id": "59xxx67"
               },
               {
                  "name": "xxxxx",
                  "id": "79xxx27"
               }
            ],
            "count": 2
         },
         "comments": {
            "count": 0
         }
      },

....
....
....
}
]

这是json的一般模式"：

[
{
   "data": [
      {

      }
    ],
    "paging": {
      "previous": "link",
      "next": "link"
   }
},
   "data": [
      {
      }
    ],
    "paging": {
      "previous": "link",
      "next": "link"
   }
},
"data": [
      {
      }
    ],
    "paging": {
      "previous": "link",
      "next": "link"
   }
}
]

Answer 1

而不是使用：

mongoimport -d DATABASE_NAME -c COLLECTION_NAME --file YOUR_JSON_FILE

使用以下命令：

mongoimport -d DATABASE_NAME -c COLLECTION_NAME --file YOUR_JSON_FILE --jsonArray

Answer 2

在我的例子中，我的文件实际上并不太大，所以错误消息具有误导性。我必须将每个文档放在一行中，或者使用--jsonArray。

因此，可以像这样更改文件：

{ "_id" : "xxxxxxxx", "foo" : "yyy", "bar" : "zzz" }

或将导入命令更改为

mongoimport -d [db_name] -c [col_name] --file [file_with_multi_lined_docs] --jsonArray

如果我的文件仍然是每个文档多行的格式

{
    "_id" : "xxxxxxxx", 
    "foo" : "yyy", 
    "bar" : "zzz" 
}

Answer 3

您的json文件是否只包含data字段中的记录列表？在这种情况下，您需要将json文件重新格式化为记录列表，如下所示：

     {
     "id": "xxxxxxxxxxxxxxxxxx",
     "from": {
        "name": "yyyyyyyyyyy",
        "id": "1111111111111"
     },
     "to": {
        "data": [
           {
              "version": 1,
              "name": "1111111111111",
              "id": "1111111111111"
           }
        ]
     },
     ......
     }
     {
     "id": "xxxxxxxxxxxxxxxxxx",
     "from": {
        "name": "yyyyyyyyyyy",
        "id": "1111111111111"
     },
     "to": {
        "data": [
           {
              "version": 1,
              "name": "1111111111111",
              "id": "1111111111111"
           }
        ]
     },
     ......
     }

如果您的json文件格式良好，只需编辑几行前导/结束行就足够了。

编辑：您可能需要--jsonArray选项才能从有效的json文件导入。试一试

mongoimport --db DATABASE_NAME --collection COLLECTION_NAME --file YOUR_JSON_FILE --jsonArray