Trending questions in Apache Spark

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How to create singleton classes in Scala?

Hey, Scala introduces a new object keyword, which is used ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,907 views
0 votes
1 answer

Scala: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Your InputStream was neither an OLE2 stream, nor an OOXML stream

Try executing the below code, def readExcel(file: String): ...READ MORE

Jul 30, 2019 in Apache Spark by Raman
 • 1,933 views
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How to handle data shuffle in Spark

Hi, You can do it using map partition ...READ MORE

Aug 6, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,603 views
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Explain the for loop for printing the Map values in Scala in Apache Spark?

Hey, You can see this following code to ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,246 views
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How to find values common to two sets in Scala

Hey, There are two ways to find the ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,888 views
0 votes
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How to print string text in scala?

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

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,926 views
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Spark Streaming Pyspark code not working

The address you are using in the ...READ MORE

Jul 11, 2019 in Apache Spark by Shir
 • 2,600 views
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1 answer

Load custom delimited file in Spark

Refer to the following code: val sqlContext = ...READ MORE

Jul 24, 2019 in Apache Spark by Ritu
 • 2,020 views
+1 vote
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_spark_metadata/0 doesn't exist while Compacting batch 9 Structured streaming error

We have Streaming Application implemented using Spark ...READ MORE

May 31, 2019 in Apache Spark by AzimKangda
 • 130 points • 4,348 views
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1 answer

In how many modes Apache spark can run?

Hey, You can launch spark application in four ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,609 views
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1 answer

How to use uniform list in Scala?

Hey, The method List.fill() creates a list and ...READ MORE

Aug 1, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,655 views
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1 answer

What is polyglot in spark?

Hi, Spark provides a high-level API in Java, ...READ MORE

Jul 1, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,910 views
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1 answer

Query regarding Appending " to a string in Scala

You can perform this task in two ...READ MORE

Jul 10, 2019 in Apache Spark by Esha
 • 2,513 views
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0 answers

Why doesn't my Spark Yarn client runs on all available worker machines?

I am running an application on Spark ...READ MORE

Feb 22, 2019 in Apache Spark by Uzair Ahmad
edited Feb 22, 2019 by Omkar • 8,521 views
0 votes
1 answer

How to load data of .csv file in MySQL Database Table?

You can do it using a code ...READ MORE

Jul 22, 2019 in Apache Spark by Vishwa
 • 1,996 views
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How to concatinating Arrays in scala?

Hey, We can append a Scala array to ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,862 views
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1 answer

What is Spark Driver?

Hi, Spark Driver is the program that runs ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,720 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 • 1,901 views
0 votes
1 answer

Spark Processing Internals

Spark uses a master/slave architecture. As you ...READ MORE

Jul 15, 2019 in Apache Spark by Jimmy
edited Jun 9, 2020 by MD • 2,250 views
0 votes
1 answer

Spark Submit: class does not exists

In the command, you have mentioned the ...READ MORE

Jul 26, 2019 in Apache Spark by Jimmy
 • 1,745 views
+1 vote
1 answer

How to install Scala Build Tool (SBT) on ubuntu?

Hey, To install SBT on Ubuntu first you need ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,770 points • 1,812 views
0 votes
1 answer

Monitoring Spark application

Spark-submit jobs are also run from client/edge ...READ MORE

Aug 9, 2019 in Apache Spark by Umesh
 • 1,114 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 • 1,479 views
0 votes
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 • 1,573 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 • 5,300 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
 • 7,561 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 • 1,415 views
0 votes
1 answer

Spark to Hive Table creation

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

Jul 23, 2019 in Apache Spark by Dinesh
 • 1,762 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 • 1,704 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
 • 1,623 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
 • 4,415 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
 • 1,388 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 • 1,405 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
 • 1,290 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
 • 2,385 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
 • 926 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 • 1,296 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 • 1,282 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 • 926 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
 • 1,545 views
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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 • 1,173 views
0 votes
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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 • 1,463 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 • 1,151 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 • 1,266 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 • 1,053 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 • 1,018 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 • 1,090 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
 • 1,904 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
 • 1,755 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 • 2,196 views
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