Trending questions in Apache Spark

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Spark to Hive Table creation

There's an easier way to achieve your ...READ MORE

Jul 23, 2019 in Apache Spark by Dinesh
 • 1,632 views
+1 vote
1 answer

Scala: CSV file to Save data into HBase

Check the reference code mentioned below: def main(args: ...READ MORE

Jul 25, 2019 in Apache Spark by Hari
 • 1,503 views
0 votes
1 answer

What is “Unit” and “()” in Scala?

Hey, Unit is a subtype of scala.anyval and ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,556 views
0 votes
1 answer

How do I access the Map Task ID in Spark?

You can access task information using TaskContext: import org.apache.spark.TaskContext sc.parallelize(Seq[Int](), ...READ MORE

Jul 23, 2019 in Apache Spark by ravikiran
 • 4,620 points • 1,599 views
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1 answer

What is the differentiate between equals() and == in Scala. Is the latter the same as == in Java?

Hey, When we try to compare two instances ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,343 views
0 votes
1 answer

How to find the number of null contain in dataframe?

Hey there! You can use the select method of the ...READ MORE

May 3, 2019 in Apache Spark by Omkar
 • 69,220 points • 5,089 views
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1 answer

How to reverse a Scala list?

Hi, This reverses the order of elements in ...READ MORE

Aug 1, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,230 views
0 votes
1 answer

Unable to run the java- spark standalone program

Though there is nothing wrong with the ...READ MORE

Jul 30, 2019 in Apache Spark by Lohit
 • 1,264 views
0 votes
1 answer

Copy all files from local (Windows) to HDFS with Scala code

Please try the following Scala code: import org.apache.hadoop.conf.Configuration import ...READ MORE

May 22, 2019 in Apache Spark by Karan
 • 4,194 views
0 votes
1 answer

How to create scala project in intellij?

You have to install Intellij with scala plugin. ...READ MORE

Jul 5, 2019 in Apache Spark by Jimmy
 • 2,282 views
0 votes
1 answer

How to access variables in s string interpolation in Scala?

Hey, You can use below code to access variables ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,132 views
+2 votes
0 answers

How can I import zip files and process the excel files ( inside the zip files ) by using pyspark connecting with pymongo ?

How can I import zip files and ...READ MORE

Aug 6, 2019 in Apache Spark by Ahmed
 • 832 views
0 votes
1 answer

How to search for a Key in a Scala Map?

Hey, The Map.contains() method will tell you if ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,202 views
0 votes
1 answer

What is Lazy val in Scala?

Hey, Scala executes a val when we define ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,169 views
0 votes
1 answer

Scala: Loading a csv file

Refer to the below command: val input_df = ...READ MORE

Jul 31, 2019 in Apache Spark by Emma
 • 1,079 views
0 votes
1 answer

How to increase Spark listener bus event queue capacity?

The default capacity of listener bus is ...READ MORE

Mar 12, 2019 in Apache Spark by Raj
 • 7,187 views
0 votes
1 answer

How to start spark history server?

Hi, You can use this command to start ...READ MORE

Aug 6, 2019 in Apache Spark by Gitika
 • 65,770 points • 791 views
0 votes
1 answer

what is an anonymous function Scala?

Hi, An anonymous function in Scala is a ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,092 views
0 votes
1 answer

Scala: when to use x(2) and x._2?

In the above statement, x(2) is specifying an array ...READ MORE

Jul 22, 2019 in Apache Spark by Yogi
 • 1,385 views
0 votes
1 answer

How the if-else statement is different for Scala and Java?

Hey, There is one main difference. This statement ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,038 views
0 votes
1 answer

Spark foldbykey doubt

Please have a look below for your ...READ MORE

Jun 19, 2019 in Apache Spark by Tina
 • 2,731 views
0 votes
1 answer

How to work with multidimensional arrays in Scala?

Hi, Here is an example you can follow: scala> ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 951 views
0 votes
1 answer

What is Case Class in Scala?

Hey, Scala case classes let us model immutable data. ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 964 views
0 votes
1 answer

Different types of identifiers in Scala?

Hey, We have four kinds of identifiers in ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,085 views
0 votes
1 answer

Code to compute average in Apache Spark?

Hi, You can compute the average using this ...READ MORE

Jul 22, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,255 views
0 votes
1 answer

What is Map and flatMap in Spark?

Hi, The map is a specific line or ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,085 views
0 votes
1 answer

How to fit multiple assignment statements into one statement in Scala?

Hi, You can assign a Tuple to a ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points • 946 views
0 votes
1 answer

What is a lens in Scala?

Hi, A lens is an abstraction from functional ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,067 views
0 votes
1 answer

Pyspark is taking default path

The HDFS path for MyLab is /user/edureka_id. ...READ MORE

Jul 16, 2019 in Apache Spark by Khushi
 • 1,489 views
0 votes
1 answer

How to use nested function in Scala?

Hey, With Scala, we can define a Scala ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points
edited Jun 1, 2023 by Srinath • 1,034 views
0 votes
1 answer

Load CSV file data inot MySQL

If you are trying to load file ...READ MORE

Jul 25, 2019 in Apache Spark by Sita
 • 1,081 views
0 votes
1 answer

How to format a string in Scala?

Hey, To format a string, use the .format ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 837 views
0 votes
1 answer

What is 'TRAITS' in Scala

Hi, Traits are basically Scala's workaround for the ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 804 views
0 votes
1 answer

How to use yield keyword in scala and why it is used instead of println?

Hi, The yield keyword is used because the ...READ MORE

Jul 6, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,914 views
0 votes
1 answer

Why Partitions are immutable in Spark?

Hi, Every transformation generates a new partition. Partitions ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,009 views
0 votes
1 answer

Spark memory processing on a not temporary table

Temporary table is more like an index ...READ MORE

Jul 14, 2019 in Apache Spark by Suri
 • 1,538 views
0 votes
1 answer

Query regarding Operator Overloading in Scala

All prefix operators' symbols are predefined: +, -, ...READ MORE

Jul 10, 2019 in Apache Spark by Karan
 • 1,664 views
0 votes
1 answer

How 'Scala Higher Order function' works in Scala?

Hey, Scala allows the definition of a higher-order function. These ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 777 views
0 votes
1 answer

Which syntax to use to take the sum of list of collection in scala?

Hi, You can see this example to get ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,854 views
0 votes
1 answer

How shallow copy carry out using Scala?

Hey, Scala uses the method copy() to carry ...READ MORE

Aug 1, 2019 in Apache Spark by Gitika
 • 65,770 points • 724 views
0 votes
1 answer

How to declare sets with value in Scala?

Hey, You can follow this code: scala> var s=Set(1,4,4,3) s: ...READ MORE

Jul 30, 2019 in Apache Spark by Gitika
 • 65,770 points • 766 views
0 votes
1 answer

What is the work of Yield Keyword in Scala?

Hey, Used with a loop, yield produces a value for ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 933 views
0 votes
1 answer

What is recursion in Scala function? How does it works?

Hey, A Scala function involves recursion when it ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,770 points • 961 views
0 votes
1 answer

What is Hive on Spark?

Hi, Hive contains significant support for Apache Spark, ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,770 points • 613 views
0 votes
1 answer

Which Scala library is used for functional programming?

Hi, Scala library has purely functional data structures ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,770 points • 981 views
0 votes
1 answer

How to run spark in Standalone client mode?

Hi, These are the steps to run spark in ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,789 views
0 votes
1 answer

How to use Scala anonymous functions and why do we use it?

Hi, Anonymous functions in Scala is the lightweight ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 864 views
0 votes
1 answer

What is function currying in Scala?

Hi, With Scala Currying, we can take a ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 853 views
0 votes
1 answer

Scala pass input data as arguments

Please refer to the below code as ...READ MORE

Jun 19, 2019 in Apache Spark by Lisa
 • 2,449 views
0 votes
1 answer

How to create Scala function using "Def" keyword?

Hi, To create a Scala function, we use ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,770 points • 877 views
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