How to import csv file to mongodb in pyspark (or python)?

from pyspark.sql import SparkSession my_spark = SparkSession \ .builder \ .appName(“myApp”) \ .config(“spark.mongodb.input.uri”, “mongodb://127.0.0.1/testtt.coll”) \ .config(“spark.mongodb.output.uri”, “mongodb://127.0.0.1/testtt.coll”) \ .getOrCreate() df = spark.read.csv(path = “file:///home/user/Desktop/testtt.csv”, header=True, inferSchema=True) df.write.format(“com.mongodb.spark.sql.DefaultSource”).mode(“append”).option(“database”,”testtt”).option(“collection”, “coll”).save()

MongoDb.DeleteMany InvalidOperationException: {document}.LikedElement is not supported

I have interface ILike for entity Like. ILike interface public interface ILike { string Id { get; set; } string LikedElement { get; set; } } Like implementation public class Like : ILike { [BsonIgnoreIfDefault(true)] [BsonId(IdGenerator = typeof(StringObjectIdGenerator))] [BsonRepresentation(BsonType.ObjectId)] public string Id { get; set; } [BsonRepresentation(BsonType.ObjectId)] public string LikedElement { get; set; } }…

MongoDB findBy..In vs FindBy..Containing

I have some class Event: @Data @Document(collection = “event”) public class Event { private String id; private List<Type> types; } Now I want to get all events that contain some Type instance in types. I can write two methods in MongoRepository class: List<Event> findByTypesContaining(List<Type> type, Pageable pageable); or List<Event> findByTypesIn(List<Type> type, Pageable pageable); and both…

Get Time duration of two dates in MongoDB

I’m trying to execute query in MongoDB Time duration between two dates Lets say ** startTime: ISODate(‘2019-09-17 20:15:00.000’), endTime: ISODate(‘2019-09-17 20:55:00.000’) ** I want lastSeen-firstSeen as a duration in the output Below is the query IM executing db.TN_Collection.aggregate([ {$match: {DE:{$in:devices},’T’:{$gt: ISODate(‘2019-09-15 21:45:00.000’), $lt: ISODate(‘2019-09-15 22:25:00.000’)}}}, {$group: {_id: {A: ‘$A’, DE: ‘$DE’}, firstSeen:{$min:’$T’}, lastSeen: {$max: ‘$T’}}}…

MongoDB/Node.JS – “TypeError: Cannot read property ‘findOne’ of undefined” when uploading images

So I’m trying to create an application that stores images along with text information like title and description. I’m still new to mongodb and some things are unclear for me. Here’s the code for posting the data. The back-end code //Connecting DB mongoose.set(‘useNewUrlParser’, true); mongoose.set(‘useUnifiedTopology’, true); mongoose.connect(‘mongodb://localhost:27017/testDB’, (err, database) => { if (err) { console.log(‘Error!…

Is it possible to set the MongoDb validator as such that undefined properties are not inserted?

I am trying to implement a database using MongoDB for my REST API that would be able to store and retrieve documents with specific fields. I can easily use mongoose but I wish to use MongoDB’s native driver, as I want to learn MongoDB rather than mongoose. { “$jsonSchema”: { “bsonType”: “object”, “required”: [ “name”,…