utilizing spark streaming to produce json results without encountering deprecation warnings

Here is a code snippet where the df5 dataframe successfully prints json data but isStream is false and it's deprecated in Spark 2.2.0. I attempted another approach in the last two lines of code to handle this, however, it fails to read json correctly. Any suggestions on how to fix this issue?

val unionStreams = ssc.union(kinesisStreams)
unionStreams.foreachRDD ((rdd: RDD[Array[Byte]], time: Time) => {
  val rowRDD = rdd.map(jstr => new String(jstr))
  val schema = StructType(StructField("clientTime",StringType,nullable= true) :: StructField("clientIPAddress",  StringType,nullable = true) :: Nil)

  val df5 = sqlContext.read.schema(schema).json(rowRDD)
  println(df5.isStreaming)

  val df6 = spark.readStream.schema(schema).json(rdd.toString())
  println(df6.isStreaming) )}

Answer №1

To utilize Dataset[String]:

import sqlContext.implicits._

sqlContext.read.schema(schema).json(rowRDD.toDS)

Answer №2

Give this a shot, you won't get any alerts.

val dataFrame = sqlContext.read.schema(schema).json(spark.createDataset(rowRDD)(Encoders.STRING))

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Retrieving the value of a child in JSON

I have encountered this JSON structure and I am interested in extracting the value of "resource_uri" which is "/api/v1/client/2/". My implementation revolves around Backbone/javascript. Unfortunately, using json['resource_uri'] does not produce ...

Unique form validation process: utilizing JSON

Attempting to validate JSON input using Angular's FormControl. The typical approach, such as validating an email address, would involve: <form name="form"> <textarea ng-model="data.email" type="email" name="email"></textarea> &l ...

Empty nested Map in POST request

I am currently working on a springboot application with a React/Typescript frontend. I have defined two interfaces and created an object based on these interfaces. export interface Order { customer_id: number; date: Date; total: number; sp ...

Creating dropdown options with JSON and Angular

This dilemma has been causing me no end of distress. I am trying to figure out how to populate options for a select tag from a JSON object using Angular. Here is a snippet of the code: <select id="cargo" ng-model="cargo.values.cargoList"> <op ...

Checking the root object in a JSON list using Spring MVC

Looking for a solution to validate a JSON list with the following structure: [{"op":"A","path":"C","value":"B"},...] within a Spring MVC application. Currently, I am deserializing it to an object using default Jackson as shown below: public class Operat ...

JavaScript : Retrieve attributes from a JSON object

Situation : I have a JSON object with multiple properties and need to send only selected properties as a JSON string to the server. Approach : To exclude certain properties from the JSON string, I utilized the Object.defineProperty() method to set enumera ...

The JSON file failed to load

Having some trouble running the JSON file with jQuery AJAX, always getting an error message. I am trying to run the code locally without any ASP.NET or PHP, aiming to run JSON without a server. I have set the URL through IIS on my local machine. JSON: / ...

Display a JSON encoded array using Jquery

Within an ajax call, I have a single json encoded array set: $var = json_encode($_SESSION['pictures']); The json encoded array is stored in a variable called "array" When I try to display the contents of "array" using alert, I get this respons ...

"Utilizing Python to extract data from JSON and determine the

I have extracted a .json file from Wireshark containing the following instance: "_source": { "layers": { "frame": { "frame.encap_type": "1", "frame.time": "Jan 23, 2018 10:3 ...

Experiencing receiving a null value for an XML-formatted string following the process of

I am new to android development and I am currently working on a project where I need to call a webservice that returns a JSON string as a response. This JSON string contains an XML formatted string as one of the entries. String jsoncontent=restTemplate.ge ...

Mule Server 3.6 Connecting to Anypoint Studio Using the Request Connector

Is there a way to configure the Request Connector to send raw JSON data using the POST method? In my Set Payload transformer, I have the following code: #[{ "productId": #[sessionVars.productId] }] After running my Mule App, I encountered this error: E ...

Tips for creating an aesthetically pleasing JSON file using a template in ansible

Using Jinja2 templating, I am attempting to create a configuration file and save it in .json format while ensuring proper formatting. Is there a way to store the output file as a variable and then convert it to JSON using the to_nice_json function? This t ...

Remove empty arrays in PHP before formatting correct JSON

When trying to echo a PHP array in JSON format on the backend, I encountered an issue where null arrays were being included before the actual data. Here is the snippet of the output: [][][][][][][][][][][][][][][][][][][][][][][][][] [][][][][][][][][][][ ...

Unraveling JSON string containing additional double quotes in Python

Does anyone know how to handle parsing a poorly formatted JSON String in python? Take a look at this example: "{""key1"":""value1"",""key2"":{""subkey1"":null,"&qu ...

Tips for preserving a collection of items in a thesaurus?

My project involves a Python 3.5 program that manages an inventory of various objects. One key aspect is the creation of a class called Trampoline, each with specific attributes such as color, size, and spring type. I frequently create new instances of thi ...

Issue with optimizing in Webpack 4

It's past 2am and I find myself going crazy trying to identify an error. The console keeps repeating the message: "Error: webpack.optimize.UglifyJsPlugin has been removed, please use config.optimization.minimize instead." I've attempted modifyi ...

Encoding a struct in Swift using Encodable and incorporating a pre-encoded value

Consider a data structure with a unique setup, where the contents holds an encoded JSON fragment. let partial = """ { "foo": "Foo", "bar": 1 } """ struct Document { let contents: String let other: [String: Int] } let doc = Document(contents: partial ...

What is the process for including a new item in a JavaScript dictionary?

I'm currently learning JavaScript and I've encountered a challenge. I have a dictionary that I'd like to update whenever a button is clicked and the user enters some data in a prompt. However, for some reason, I am unable to successfully upd ...

Trigger the original function again once the other function completes in jQuery AJAX

I'm working on improving my skills in jQuery, AJAX, and JSON. Within my application, there is a dropdown select menu: <select id="serviceload" name="serviceload"></select> The OPTIONS in the select menu are populated dynamically by anot ...

Query to retrieve all IDs contained within the list stored in TinyDB

In my python project, I am utilizing TinyDB to enhance the logic. To improve efficiency, I need to be able to retrieve multiple objects in a single query, preferably using a list. listOfIDs = ['123', '456'] I am working with the lates ...