Trending questions in Apache Spark

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What is tail-recursion in Scala?

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

Jul 26, 2019 in Apache Spark by Gitika
 • 65,770 points • 855 views
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Load data to mysql from local

I'm trying to load data to mysql ...READ MORE

Jul 23, 2019 in Apache Spark by Yogi
 • 1,028 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
 • 65,770 points • 1,818 views
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What is exception propagation in Scala?

Hi, When a function experiences an exception, it ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,770 points • 856 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
 • 65,770 points • 850 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
 • 65,770 points • 772 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
 • 65,770 points • 840 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
 • 65,770 points • 1,651 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
 • 65,770 points • 783 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
 • 65,770 points • 773 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
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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
 • 495 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
 • 65,770 points • 575 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
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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
 • 65,770 points • 775 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
 • 65,770 points • 1,678 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
 • 65,770 points • 700 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
 • 65,770 points • 644 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
 • 768 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
 • 65,770 points • 672 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
 • 65,770 points • 1,535 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 • 953 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
 • 718 views
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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
 • 1,228 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
 • 1,093 views
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What is Lazy evaluated in Spark?

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

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,436 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
 • 65,770 points • 555 views
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1 answer

Explain vararg arguments.

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

Jul 24, 2019 in Apache Spark by Gitika
 • 65,770 points • 589 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
 • 1,059 views
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What is RDD in Apache spark?

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

Jul 1, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,476 views
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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
 • 65,770 points • 1,443 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
 • 499 views
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Changing Yarn queue in Spark application

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

Mar 28, 2019 in Apache Spark by Raj
 • 5,526 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
 • 935 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
 • 1,002 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 • 1,294 views
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1 answer

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
 • 65,770 points • 1,320 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
 • 65,770 points • 1,071 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
 • 65,770 points • 1,077 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
 • 2,859 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
 • 65,770 points • 983 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
 • 65,770 points • 912 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
 • 984 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
 • 65,770 points • 893 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
 • 65,770 points • 889 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
 • 65,770 points • 846 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
 • 2,703 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
 • 65,770 points • 795 views
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what are the spark real time issues ?

Some of the issues I have faced ...READ MORE

Mar 18, 2019 in Apache Spark by Sharman
 • 5,462 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
 • 65,770 points • 827 views
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