Trending questions in Apache Spark

0 votes
3 answers

Filtering a row in Spark DataFrame based on matching values from a list

Use the function as following: var notFollowingList=List(9.8,7,6,3 ...READ MORE

Jun 5, 2018 in Apache Spark by Shubham
• 13,480 points
73,808 views
+2 votes
14 answers

How to create new column with function in Spark Dataframe?

val coder: (Int => String) = v ...READ MORE

Apr 4, 2019 in Apache Spark by anonymous

edited Apr 5, 2019 by Omkar 64,876 views
+1 vote
8 answers

How to replace null values in Spark DataFrame?

Hi, In Spark, fill() function of DataFrameNaFunctions class is used to replace ...READ MORE

Dec 15, 2020 in Apache Spark by MD
• 95,060 points
54,060 views
0 votes
5 answers

How to change the spark Session configuration in Pyspark?

You aren't actually overwriting anything with this ...READ MORE

Dec 13, 2020 in Apache Spark by Gitika
• 65,870 points
49,825 views
+5 votes
11 answers

Concatenate columns in apache spark dataframe

its late but this how you can ...READ MORE

Mar 21, 2019 in Apache Spark by anonymous
60,981 views
+1 vote
6 answers

groupByKey vs reduceByKey in Apache Spark.

ReduceByKey is the best for production. READ MORE

Mar 3, 2019 in Apache Spark by anonymous
40,226 views
+1 vote
8 answers

How to print the contents of RDD in Apache Spark?

Save it to a text file: line.saveAsTextFile("alicia.txt") Print contains ...READ MORE

Dec 10, 2018 in Apache Spark by Akshay
40,161 views
+1 vote
2 answers

Spark: Dataframe vs Dataset

Recently, there are two new data abstractions ...READ MORE

Jul 29, 2019 in Apache Spark by Jackie
26,347 views
+1 vote
3 answers

map() vs flatMap() in Spark

Spark map function expresses a one-to-one transformation. ...READ MORE

Jun 17, 2019 in Apache Spark by vishal
• 180 points
24,356 views
0 votes
1 answer

Spark Core How to fetch max n rows of an RDD function without using Rdd.max()

Hi@Prasant, If Spark Streaming is not supporting tuple, ...READ MORE

Dec 3, 2020 in Apache Spark by MD
• 95,060 points
125 views
0 votes
0 answers

What does the below code print? [closed]

What does the below code print? val AgeDs ...READ MORE

Nov 24, 2020 in Apache Spark by ritu
• 980 points

closed Nov 25, 2020 by Gitika 394 views
0 votes
1 answer

The number of stages in a job is equal to the number of RDDs in DAG. however, under one of the cgiven conditions, the scheduler can truncate the lineage. identify it.

Hi@Edureka, Spark's internal scheduler may truncate the lineage of the RDD graph ...READ MORE

Nov 25, 2020 in Apache Spark by MD
• 95,060 points
274 views
0 votes
0 answers
0 votes
1 answer

6)What allows spark streaming to provide fault tolerance for network sources of data?

Hi@ritu, Fault tolerance is the property that enables ...READ MORE

Dec 1, 2020 in Apache Spark by MD
• 95,060 points
107 views
0 votes
1 answer

The number of stages in a job is equal to the number of RDDs in DAG. however, under one of the cgiven conditions, the scheduler can truncate the lineage. identify it.

Hi@ritu, Spark's internal scheduler may truncate the lineage of the RDD graph if ...READ MORE

Nov 25, 2020 in Apache Spark by akhtar
• 38,170 points
186 views
0 votes
0 answers

What allows spark to periodically persist data about an application such that it can recover from failures? [closed]

What allows spark to periodically persist data ...READ MORE

Nov 25, 2020 in Apache Spark by ritu
• 980 points

closed Nov 26, 2020 by MD 174 views
0 votes
1 answer

What will be printed when the below code is executed?

Option D)  runtime error READ MORE

Nov 26, 2020 in Apache Spark by Gitika
• 65,870 points
110 views
0 votes
1 answer

What will be printed when the below code is executed?

Option b) .List(0,3,5) The takeOrdered method returns the smallest n elements in a ...READ MORE

Nov 26, 2020 in Apache Spark by Gitika
• 65,870 points
102 views
0 votes
1 answer

What are some of the things you can monitor in the Spark Web UI?

Option c) Mapr Jobs that are submitted READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
145 views
0 votes
1 answer

In AWS, if user wants to run spark, then on top of which one of the following can the user do it?

Hi@ritu, AWS has lots of services. For spark ...READ MORE

Nov 26, 2020 in Apache Spark by MD
• 95,060 points
85 views
0 votes
1 answer

What class is declared in the blow code?

Option D: String class READ MORE

Nov 26, 2020 in Apache Spark by Gitika
• 65,870 points
67 views
0 votes
1 answer

Which one of the following commands is used to start python-spark?

Hi@ritu, To start your python spark shell, you ...READ MORE

Nov 26, 2020 in Apache Spark by MD
• 95,060 points
66 views
0 votes
1 answer

16)What allows spark to periodically persist data about an application such that it can recover from failures?

Hi@Edureka, Checkpointing is a process of truncating RDD ...READ MORE

Nov 25, 2020 in Apache Spark by MD
• 95,060 points
95 views
0 votes
1 answer

What will be printed when the below code is executed ?

Option a) List(5,100,10) The take method returns the first n elements in an ...READ MORE

Nov 26, 2020 in Apache Spark by Gitika
• 65,870 points
56 views
0 votes
1 answer

which one of the following commands is used to see the structure of the Dataframe?

Hi @Ritu If you want to see the ...READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
96 views
0 votes
1 answer

What is the output of the following code?

rror: expected class or object definition sc.parallelize(Array(1L,("SFO")),(2L,("ORD")),(3L,("DFW")))) ^ one error ...READ MORE

Nov 26, 2020 in Apache Spark by Gitika
• 65,870 points
60 views
0 votes
0 answers
0 votes
1 answer
0 votes
2 answers

5)Using which one of the given choices will you create an RDD with specific partitioning?

Hi, @Ritu, option b for you, as Hash Partitioning ...READ MORE

Nov 23, 2020 in Apache Spark by Gitika
• 65,870 points
121 views
0 votes
1 answer

What does the following code print?

error: expected class or object definition sc.parallelize (Array(1L, ...READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
65 views
0 votes
1 answer
0 votes
1 answer

13)Refer the input and identify the output if the below code is run

Option c)  Run time error - A READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
60 views
0 votes
1 answer

From the following graph code ,which code snippet will return the no.of flight routes?

Hey, @Ritu, I am getting error in your ...READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
55 views
0 votes
1 answer

What is the output of the following code?

After executing your code, there is an ...READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
55 views
0 votes
1 answer

From the below code. what is the most appropriate next step in ML process?

Hi@ritu, The most appropriate step according to me ...READ MORE

Nov 25, 2020 in Apache Spark by MD
• 95,060 points
56 views
0 votes
1 answer

What does the below code print?

Option d) Run time error. READ MORE

Nov 25, 2020 in Apache Spark by Gitika
• 65,870 points
53 views
0 votes
1 answer

4)Spark streaming converts streaming data into DStreams. which one of the given statements about DStreams is True?

Hi@ritu, Spark DStream (Discretized Stream) is the basic ...READ MORE

Nov 23, 2020 in Apache Spark by MD
• 95,060 points
99 views
0 votes
1 answer

12)Which one of the given flows correctly describe the Spark Streaming Architecture?

Hi@ritu, You need to learn the Architecture of ...READ MORE

Nov 23, 2020 in Apache Spark by MD
• 95,060 points
93 views
0 votes
1 answer

7)From Schema RDD, data can be cache by which one of the given choices?

Hi, @Ritu, According to the official documentation of Spark 1.2, ...READ MORE

Nov 23, 2020 in Apache Spark by Gitika
• 65,870 points
93 views
0 votes
0 answers

17)from the given choices, identify the value returned by $"whatever"?

17)from the given choices, identify the value ...READ MORE

Nov 24, 2020 in Apache Spark by ritu
• 980 points
65 views
0 votes
0 answers

What is the output of the following code? [closed]

What is the output of the following ...READ MORE

Nov 24, 2020 in Apache Spark by Edureka
• 200 points

closed Nov 25, 2020 by MD 40 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
• 65,870 points
66 views
0 votes
1 answer

How do you load this multiline data in spark as a single record?

Hi@Ruben, I think you can add an escape ...READ MORE

Nov 23, 2020 in Apache Spark by MD
• 95,060 points
100 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
• 65,870 points
49 views
+1 vote
1 answer

How to write Spark DataFrame to Avro Data File?

Hi@akhtar, Since Avro library is external to Spark, ...READ MORE

Nov 4, 2020 in Apache Spark by MD
• 95,060 points
298 views
0 votes
1 answer

How to read a dataframe based on an avro schema?

Hi, I am able to understand your requirement. ...READ MORE

Oct 30, 2020 in Apache Spark by MD
• 95,060 points
404 views
0 votes
1 answer

How to read Avro Partition Data?

Hi@akhtar, When we try to retrieve the data ...READ MORE

Nov 4, 2020 in Apache Spark by MD
• 95,060 points
138 views
0 votes
1 answer

how create distance vector in pyspark (Euclidean distance)

Hi@dani, You can find the euclidean distance using ...READ MORE

Oct 16, 2020 in Apache Spark by MD
• 95,060 points
346 views