Trending questions in Apache Spark

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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
 • 65,910 points • 396 views
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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
 • 65,910 points • 1,488 views
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How to create RDD from an external file source in scala?

Hi, To create an RDD from external file ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,554 views
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How to define SparkConf?

Can anyone explain how to define SparkConf? READ MORE

Aug 1, 2019 in Apache Spark by Danish
 • 327 views
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How is Val different from var in Scala?

Hey, In this language, val is a value and var is ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,910 points • 630 views
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Scala pass input data as arguments

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

Jun 19, 2019 in Apache Spark by Lisa
 • 2,144 views
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Consider for-comprehensions in Scala. What are they syntactic sugars for?

Hi, A for-comprehension is one way to carry ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,910 points • 402 views
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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 • 567 views
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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 • 562 views
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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 • 556 views
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How can we iterate any function using "foreach" function in scala?

Hi, Yes, "foreach" function you use because it will ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,389 views
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How does Closure function works in Scala?

Hi, A closure in Scala is a function ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,910 points • 473 views
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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 • 550 views
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load/save in spark

The reason why you are able to ...READ MORE

Jul 5, 2019 in Apache Spark by Firoz
 • 1,355 views
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What is Options in Scala?

Hey, A Scala Option is a kind of ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,910 points • 408 views
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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 • 493 views
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How to process an Array in Scala?

Hi, We can use loop control structures to ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 435 views
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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
 • 514 views
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How to create RDD from parallelized collection in scala?

Hi, You can check this example in your ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,361 views
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What is Streams in Scala?

Hi, A stream is a lazy list as ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 410 views
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Explain vararg arguments.

Hey, With varargs, we can pass a variable ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,910 points • 431 views
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At which point of time Scala will take default arguments?

Hi, If we omit an argument in a ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,910 points • 391 views
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Error: Loading data to mysql

You have to use sqoop to export data ...READ MORE

Jul 23, 2019 in Apache Spark by Janan
 • 457 views
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Can we change the path where the Hive data is stored in HDFS?

Yes, you can but it has to ...READ MORE

Jul 14, 2019 in Apache Spark by Yogi
 • 867 views
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Do real-time data processing is possible with Spark SQL?

Hey, Real-time data processing is not possible directly ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,224 views
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Spark on Yarn

If you just want to get your ...READ MORE

Jul 18, 2019 in Apache Spark by ravikiran
 • 4,620 points • 639 views
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What is immutabiliity in Spark?

Can anyone explain what is immutability in ...READ MORE

Jul 23, 2019 in Apache Spark by Risha
 • 362 views
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1 answer

Error Loading data to mysql in Spark

You have to use sqoop to export data ...READ MORE

Jul 11, 2019 in Apache Spark by Jishan
 • 850 views
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1 answer

What is Lazy evaluated in Spark?

Hi, If you execute a bunch of programs, ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,111 views
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1 answer

What is RDD in Apache spark?

Hi, RDD in spark stands for REsilient distributed ...READ MORE

Jul 1, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,190 views
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Is fetching data from apache flume webcrawling?

Web crawling is a program or automated ...READ MORE

Jul 11, 2019 in Apache Spark by Esha
 • 747 views
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When we create an RDD, does it bring the data and load it into the memory?

Can anyone suggest when we create an ...READ MORE

Jul 3, 2019 in Apache Spark by monalisa
recategorized Jul 4, 2019 by Gitika • 1,118 views
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1 answer

What is a Parquet file in Spark?

Hey, Parquet is a columnar format file supported ...READ MORE

Jul 2, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,106 views
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Working of map function on data

The map function creates an array of ...READ MORE

Jul 11, 2019 in Apache Spark by Krish
 • 699 views
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Scala join comma delimited file as tables

Dataframe creation commands:​ Now we will register them ...READ MORE

Jul 9, 2019 in Apache Spark by Suraj
 • 761 views
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How to calculate the result of formula with Scala?

Hi, You can use a simple mathematical calculation ...READ MORE

Jul 1, 2019 in Apache Spark by Gitika
 • 65,910 points • 1,025 views
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Error while reading multiline Json

peopleDF: org.apache.spark.sql.DataFrame = [_corrupt_record: string] The above that ...READ MORE

May 23, 2019 in Apache Spark by Conny
 • 2,644 views
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Is it mandatory to start Hadoop to run spark application?

Hi, No, not mandatory, but there is no ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 766 views
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1 answer

Changing Yarn queue in Spark application

To change the default queue to which ...READ MORE

Mar 28, 2019 in Apache Spark by Raj
 • 5,006 views
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How can we optimize and minimize the memory when work with scala use case?

Hi, There is a term in Scala that is ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 706 views
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How to assign block expression in scala?

Hi, You can follow this example to know ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,910 points • 691 views
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What is SparkCore functionalities?

Hey, Spark Core is a base engine of ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,910 points • 726 views
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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 • 601 views
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How to create RDD as string file?

Can anyone suggest how to create RDD ...READ MORE

Jul 5, 2019 in Apache Spark by anand
 • 674 views
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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 • 604 views
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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 • 597 views
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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 • 527 views
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Spark: Saving file csv

 If you need a single output file ...READ MORE

May 22, 2019 in Apache Spark by Rishi
 • 2,421 views
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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 • 567 views
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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 • 580 views
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