Reduce can be an override fold that doesn't take the first element. I guess there is an answer to that design decision but I can't find it.
import org.apache.spark.sql.SparkSession object RDDBroadcast extends App { val spark = SparkSession.builder() .appName("SparkByExamples.com") .maste
I tried posting this question to Scala Users but no reply yet. How does one go about working with the new experimental Scala 3 with Scala.JS? I can’t find
I am trying to understand and incorporate upper bound types with overriding in my system, but have not been able to achieve it without some ugly code. I have th
I am having trouble retrieving the old value before a cast of a column in spark. initially, all my inputs are strings and I want to cast the column num1 into a
We are running a stateful structured streaming job which reads from Kafka and writes to HDFS. And we are hitting this exception: 17/12/08 05:20:12 ERROR FileFor
I'm trying to unit test my actor's handling of a "Terminated" message for a child actor. The code under test is something like this: case Terminated(termin
I have a dataframe look like this below id pub_date version unique_id c_id p_id type source lni001 20220301 1
I am relatively new to Scala and also new to Doobie. I am connecting to SQL Server 2014 and need to create a temp table and subsequently insert into that temp
How can I integrate Kafka producer with spark stateful streaming which uses checkpoint along with StreamingContext.getOrCreate. I read this post: How to write s
I am trying to extract a value from an array in SparkSQL, but getting the error below: Example column customer_details {"original_customer_id":"ch_382820","fi
I have written a small application, but there is a problem that my app doesn't wait for my actors to stop, and stops them before their actions are completed. I
This question although may seem previously answered it is not. All transposing seem to relate to one column and pivoting the data in that column. I want to ma
I'm trying to convert json to xml, I am getting full output in console if the json file is small but I am trying to pass large json file n I'm not getting the
I am trying to train the model for recommendation for movie. I have a dataset which has list of all the casts, movie details with description. based on the occu
I am trying to train the model for recommendation for movie. I have a dataset which has list of all the casts, movie details with description. based on the occu
I am trying to get this implementation to work, tho it ends in an infinite loop. What am I missing? def bubbleSort(l: List[Int]): List[Int] = if(isSorted(l)) l
I have this Existing table tb1 in my database Now new data comes and new data is stored in another table tb2 Earlier Account_Number 9988 was Level 2, But now
object Abc { method1(param1,param2):Future[Option[String]] = { //some work } } We are using method1 somewhere and need to stub method1 how can
The functor of the identity monad can be defined as: data Identity a = Identity a Because this monad is free, an alternative definition is the following: data