Most viewed questions in Apache Spark

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How to monitor interrupted Spark tasks?

To enable monitoring interrupted tasks, run the following ...READ MORE

Mar 12, 2019 in Apache Spark by Veer
 • 607 views
0 votes
1 answer

Spark standalone client mode

spark-submit \ class org.apache.spark.examples.SparkPi \ deploy-mode client \ master spark//$SPARK_MASTER_IP:$SPARK_MASTER_PORT ...READ MORE

Jun 20, 2018 in Apache Spark by Ashish
 • 2,650 points • 607 views
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1 answer

Spark interview

Preparing for an interview? We have something ...READ MORE

Feb 7, 2019 in Apache Spark by Edureka
 • 2,960 points • 605 views
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1 answer

How to change worker cleanup interval?

The default interval time is 1800 seconds ...READ MORE

Mar 25, 2019 in Apache Spark by Hari
 • 604 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
 • 65,910 points • 597 views
0 votes
1 answer

When we create an RDD, does it bring the data and load it into the memory?

Hi, No. An RDD is made up of ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 596 views
0 votes
1 answer

Spark - how the solve the below question?

option d, Runtime error READ MORE

Nov 23, 2020 in Apache Spark by Gitika
 • 65,910 points • 594 views
0 votes
1 answer

How to implement two level loop in scala?

Hi, You can use two level loops using the ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 594 views
0 votes
1 answer

How to enable SASL encryption?

You can use dynamic configuration setting to ...READ MORE

Mar 14, 2019 in Apache Spark by Raj
 • 592 views
0 votes
1 answer

Where can I get best spark tutorials for beginners?

Hi@akhtar There are lots of online courses available ...READ MORE

May 14, 2020 in Apache Spark by MD
 • 95,440 points • 591 views
0 votes
1 answer

Password for keystore in Spark

You can dynamically set a password to ...READ MORE

Mar 15, 2019 in Apache Spark by karan
 • 589 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
 • 65,910 points • 586 views
0 votes
1 answer

How will you explain yield keyword in Scala?

Hi, Yield keyword can be used either before ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 586 views
0 votes
1 answer

Is it possible to run Spark and Mesos along with Hadoop?

Yes, it is possible to run Spark ...READ MORE

May 29, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 583 views
0 votes
1 answer

2)What will be printed when the below code is executed ?

Hi, @Ritu, List(5,100,10) is printed. The take method returns the first n elements in ...READ MORE

Nov 23, 2020 in Apache Spark by Gitika
 • 65,910 points • 582 views
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1 answer

Is Spark Sql provides indexing to improve processing speed?

Hi@akhtar, There is no concept of indexing in ...READ MORE

Feb 4, 2020 in Apache Spark by MD
 • 95,440 points • 577 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
 • 65,910 points • 577 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
 • 65,910 points • 576 views
0 votes
1 answer

What is persist() in Spark?

Hi, Spark’s RDDs are by default recomputed each ...READ MORE

Jul 2, 2019 in Apache Spark by Gitika
 • 65,910 points • 574 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
 • 65,910 points • 573 views
0 votes
1 answer

What is tail-recursion in Scala?

Hey, Recursion is when a function makes a ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,910 points • 573 views
0 votes
1 answer

How to limit the cores being used by a cluster?

You can set the maximum number of ...READ MORE

Mar 11, 2019 in Apache Spark by Raj
 • 573 views
0 votes
1 answer

Starting Spark Scala console

To get command prompt for Scala open ...READ MORE

May 24, 2019 in Apache Spark by Cassy
 • 564 views
0 votes
1 answer

Error while using Spark SQL filter API

You have to use "===" instead of ...READ MORE

Feb 4, 2019 in Apache Spark by Omkar
 • 69,210 points • 561 views
0 votes
1 answer

What is meant by Transformation? Give some examples.

Hi, The transformations are the functions that are ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,910 points • 558 views
0 votes
1 answer

How to create Scala Array with Range?

Hey, The range() method will give us integers ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 555 views
0 votes
1 answer

What is BitSet in Scala?

Hey, A BitSet is a set of non-negative ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 548 views
0 votes
1 answer

How to declare Scala array?

Hi, We can declare Scala arrays in two ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 545 views
0 votes
1 answer

What is the advantage of having immutability in design for Scala programming language?

Hi, Scala uses immutability by default in most ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,910 points • 542 views
0 votes
1 answer

How to set Spark recovery to Zookeeper?

There is a property of Spark which ...READ MORE

Mar 25, 2019 in Apache Spark by Hari
 • 541 views
0 votes
1 answer

What port the Spark dashboard run on?

Spark dashboard by default runs on port ...READ MORE

Mar 6, 2019 in Apache Spark by Rohit
 • 539 views
0 votes
1 answer

Setting port for SSL for Spark application

You can set the port in the ...READ MORE

Mar 15, 2019 in Apache Spark by Karan
 • 532 views
0 votes
1 answer

Spark and Scale Auxiliary constructor doubt

println("Slayer") is an anonymous block and gets ...READ MORE

Jan 8, 2019 in Apache Spark by Omkar
 • 69,210 points • 531 views
0 votes
1 answer

How to make driver update metrics quickly to executor?

There's a heartbeat signal sent to the ...READ MORE

Mar 10, 2019 in Apache Spark by Siri
 • 525 views
0 votes
1 answer

What are the parameters in local[a,b,c] explains?

SparkContext.createTaskScheduler property parses the master parameter Local: 1 ...READ MORE

May 29, 2018 in Apache Spark by Shubham
 • 13,490 points • 525 views
0 votes
1 answer

Retaining the batch by status APIs before Garbage Collection

By default, 1000 batches are retained by ...READ MORE

Mar 19, 2019 in Apache Spark by Jai
 • 524 views
0 votes
1 answer

Spark CLI issue

For spark.read.textFile we need spark-2.x. Please try ...READ MORE

Jun 19, 2019 in Apache Spark by Maahi
 • 518 views
0 votes
1 answer

How can you use "for" statement in scala to print list from collection?

Hi, You can use for loop in scala using ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 513 views
0 votes
1 answer

How to cleanup application work directories faster?

By default, the cleanup time is set ...READ MORE

Mar 26, 2019 in Apache Spark by Jyoti
 • 507 views
0 votes
1 answer

Appending " to a string in Scala

1) Use the concat() function. Refer to the below ...READ MORE

Jul 23, 2019 in Apache Spark by Ritu
 • 505 views
0 votes
1 answer

How can we use spark shell for scala without cluster?

You can run the Spark shell for ...READ MORE

Apr 28, 2019 in Apache Spark by Giri
 • 505 views
0 votes
1 answer

Is there an API for implementing graphs in Spark?

GraphX is the Spark API for graphs and ...READ MORE

Jan 5, 2019 in Apache Spark by Frankie
 • 9,830 points • 500 views
0 votes
1 answer

By which components spark ecosystem libraries are composed of?

Hi, Spark ecosystem libraries are composed of various ...READ MORE

Jul 1, 2019 in Apache Spark by Gitika
 • 65,910 points • 499 views
0 votes
1 answer

SQLInterpreter in Spark

SQL Interpreter & Optimizer handles the functional ...READ MORE

Jun 7, 2018 in Apache Spark by kurt_cobain
 • 9,390 points • 495 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
 • 65,910 points • 494 views
0 votes
1 answer

How to change encryption key value for local I/O?

There another property where you can set ...READ MORE

Mar 14, 2019 in Apache Spark by Raj
 • 491 views
–1 vote
1 answer

Deciding number of spark context objects

How many spark context objects you should ...READ MORE

Jan 16, 2019 in Apache Spark by Omkar
 • 69,210 points • 489 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
 • 65,910 points • 488 views
0 votes
1 answer

Why do we need App in Scala?

Hey, The app is a helper class that ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,910 points • 487 views
0 votes
1 answer

Change encryption key length fro Spark application

You can do this by running the ...READ MORE

Mar 13, 2019 in Apache Spark by Venu
 • 476 views
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