import json file into mongodb

Requirement Environment:There is a project that needs to upgrade MongoDB sharding from 2.6 to 3.0 and use the WT engine, where 2.6 of the environment many collectiong turn on sharding, and the amount of data is large.Select Mongodump,mongorestore Mode Problem:There are 2 problems with the restore step1) Large number of data import slow time spend long2) Chunks distribution is not uniform, it takes a l

Tags: blog io os file on log CTI BS AD#count CollectionDb.news.count ({"Lpublishtime": {"$gte": 1358697600000}});#mongo导出Mongoexport-h 192.168.1.175--port 33000-d booaa_so-c weibo-f ' _id '-Q ' {\ ' lweibotime\ ': {\ "\ $gte \": 1349020800000,\ "\ $l T\ ": 1351699200000}}"-O Weibo_20121201_33000.ids ##################### #20121227. txt#######################mongo导出0.1Mongoexport--port 33000-d booaa_so-c bbs-f ' _id '-o 33000.bbs.ids;#替换, replace the e

From Pymongo import mongoclientFrom Bson.objectid import ObjectidImport JSONdef read (data, find):# set to read the file in Utf-8 decoding mode, encoding parameter must be set, otherwise the default in GBK mode to read the file, when the file contains Chinese, will errorf =

builder.create (). Show (); + } the } - $ the the the //import File the Private voidIntroduction () { - /* in the */ the Try { About theFile Urlfile =NewFile (environment.getexternalstoragedirectory () the+ "/hello.txt"); theInputStreamReader ISR =NewInputStreamReader (NewFileInputStream (

Use JSON in the game to store data, easy to read, and easy to manage. Cocostudio can help generate JSON files in order to import data from Excel. Cocostudio Download Address: http://www.cocostudio.org/ I. Using Cocostudio to generate JSON files 1. Edit the data in Excel first The last "penetrating" property, should h

Because the document structure of MongoDB is in the Bjson format (bjson full name: Binary JSON), and the Bjson format itself supports data in binary format, you can save the data in binary format of the file directly into the MongoDB document structure. However, because the maximum length of a bjson cannot exceed 4M, i

JSON and CSVare supported, specifying that the CSV format must be exported using the- F The parameters specify the fields that need to be exported, andthe first behavior of theCSV file is the field name header. 2. Import: (1) import json

Because MongoDB's document structure is in bjson format (bjson Full name: Binary JSON), bjson itself supports storing binary data, therefore, the binary data of the file can be directly stored in the document structure of MongoDB. However, because the maximum length of a bjson file cannot exceed 4 MB, the maximum size

Five: MongoDB import, export, backup, restore, user authorizationOne: Data export, data importAs a DBA (administrator), you often encounter the need to import and export data, as described in the following utilities (bring-your-own):1: Data import MongoexportExport files in CSV format./mongoexport-d test-c User1-o/tmp/

Because the document structure of MongoDB is in the Bjson format (bjson full name: Binary JSON), and the Bjson format itself supports data in binary format, you can save the data in binary format of the file directly into the MongoDB document structure. However, because the maximum length of a bjson cannot exceed 4M, i

IOS-json File Analysis Methods: ios-json1. Engineering Drawing. Ii. Code. # Import "ViewController. h" # Import "SBJson. h" @ Interface ViewController () @ End @ Implementation ViewController -(Void) viewDidLoad { [Super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. // The f

[Code Note] iOS-json File Parsing Methods: ios-json 1. Engineering Drawing. Ii. Code. # Import "ViewController. h "# import" SBJson. h "@ interface ViewController () @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; // Do any additional setup af

Method 1:Read the JSON string in the file,Then use Json.loads to convert to Python dictionaryImport Jsonstr_file = './960x540/config.json ' with open (Str_file, ' R ') as F: print ("Load str file from {}". Format (str_ file)) str1 = F.read () r = json.loads (str1) print (Type (r)) print (r) print (r[' under_ga

public static void Readjson (){String jsonfile = "D://tsconfig1.json";using (System.IO.StreamReader file = System.IO.File.OpenText (jsonfile)){using (JsonTextReader reader = new JsonTextReader (file)){Jobject o = (jobject) jtoken.readfrom (reader);String a = o["Lotname"]. ToString ();var B = o["Other"];var c = b["lotaddress"];var d = o["Devices"];foreach (Jobject

the cluster for expansion. The document-oriented data model adopted by MongoDB enables it to automatically split data between multiple servers. It can also balance the data and load of clusters and automatically rearrange documents. 3. Rich functions. Including indexes, JavaScript storage, aggregation, fixed sets, and file storage. 4. excellent performance. 5. Easy management: in addition to starting the d

{ "DCN": { "FileName": "at0101.07422", "Variable": "Temperature", "Highest_temp": "Maximum temperature", "Lowest_temp": "Lowest temperature" }, "DMD": { "FileName": "bp0101.07422", "Variable": "Air Pressure", "Highest_pre": "Maximum air pressure", "Lowest_pre": "The most low pressure" }, "DMY": { "FileName": "hu0101.07422", "Variable": "Relative humidity", "Highest_h": "Maximum relative humidity", "Lowest_h": "Minimum relative humidity" }

MongoDB Data export, import, and index creation(1) Data Export-one file per table:# Mongoexport--db Project--collection table name--out output file name, such as:# Mongoexport--DB Project--collectionstock--out Stock.json, export all F10 data to file/root/stock.json(2) Data

Python converts an Excel file to a json file. This example describes how to convert an Excel file to a json file using Python. We will share this with you for your reference. The details are as follows: #-*-Encoding: UTF-8-*-

com. github. abel533.echarts. data. data; import com. github. abel533.echarts. data. pointData; impo Rt com. github. abel533.echarts. feature. magicType; import com. github. abel533.echarts. series. bar; import com. github. abel533.echarts. series. funnel; import com. github. abel533.echarts. series. line;

What is MongoDB? MongoDB is a distributed file storage-based database. Written in C ++. It is designed to provide scalable, high-performance data storage solutions for Web applications. MongoDB is a product between relational databases and non-relational databases. It has the most abundant functions and is the most