Trending questions in Apache Spark

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1 answer

Load .xlsx files to hive tables with spark scala

This should work: def readExcel(file: String): DataFrame = ...READ MORE

Jul 22, 2019 in Apache Spark by Kishan
 • 4,851 views
0 votes
1 answer

Spark-shell not working

First, reboot the system. And after reboot, ...READ MORE

Jul 15, 2019 in Apache Spark by Mahesh
 • 5,162 views
+1 vote
2 answers

How can I convert Spark Dataframe to Spark RDD?

Assuming your RDD[row] is called rdd, you ...READ MORE

Jul 9, 2018 in Apache Spark by zombie
 • 3,790 points • 21,078 views
+1 vote
0 answers

How to combine a nested json file, which is being partitioned on the basis of source tags, and has varying internal structure, into a single json file; ( differently sourced Tag and varying structure)

Source tags are different: {  x : [         { ...READ MORE

Oct 11, 2019 in Apache Spark by anonymous
 • 160 points • 1,208 views
0 votes
1 answer

How do find Max and Min values in a set in Scala?

Hey, Here is the example of which will return ...READ MORE

Jul 30, 2019 in Apache Spark by Gitika
 • 65,770 points • 4,291 views
0 votes
1 answer

How to remove the elements with a key present in any other RDD?

Hey, You can use the subtractByKey () function to ...READ MORE

Jul 22, 2019 in Apache Spark by Gitika
 • 65,770 points • 4,492 views
0 votes
1 answer

Spark: How can i create temp views in user defined database instead of default database?

You can try the below code: df.registerTempTable(“airports”) sqlContext.sql(" create ...READ MORE

Jul 14, 2019 in Apache Spark by Ishan
 • 4,714 views
0 votes
1 answer

How to increase worker timeout in Spark application?

By default, the timeout is set to ...READ MORE

Mar 25, 2019 in Apache Spark by Hari
 • 9,425 views
0 votes
1 answer

Spark Installation problem

After downloading Spark, you need to set ...READ MORE

Jul 5, 2019 in Apache Spark by Rishi
 • 5,020 views
+1 vote
1 answer

Scala: Convert text file data into ORC format using data frame

Converting text file to Orc: Using Spark, the ...READ MORE

Aug 1, 2019 in Apache Spark by Esha
 • 3,798 views
0 votes
1 answer

Copy file from local to hdfs from the spark job in yarn mode

Refer to the below code: import org.apache.hadoop.conf.Configuration import org.apache.hadoop.fs.FileSystem import ...READ MORE

Jul 24, 2019 in Apache Spark by Yogi
 • 4,112 views
+1 vote
1 answer

How to extract record from one RDD using another RDD

Hey, you can use "contains" filter to extract ...READ MORE

Aug 23, 2019 in Apache Spark by Karan
 • 2,615 views
0 votes
1 answer

Scala: 30: error: value partitions is not a member of String

Try this code: val rdd= sc.textFile (“file.txt”, 5) rdd.partitions.size Output ...READ MORE

Jul 29, 2019 in Apache Spark by Nijit
 • 3,684 views
+1 vote
1 answer

Error: value textfile is not a member of org.apache.spark.SparkContext

Hi, Regarding this error, you just need to change ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,770 points • 4,647 views
0 votes
1 answer

What is Spark UI and how to monitor a spark job?

Hey, Jobs- to view all the spark jobs Stages- ...READ MORE

Aug 6, 2019 in Apache Spark by Gitika
 • 65,770 points • 3,226 views
0 votes
1 answer

How to save RDD in Apache Spark?

Hey, There are few methods provided by the ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,770 points • 3,787 views
0 votes
1 answer

Primary keys in Apache Spark

I found the following solution to be ...READ MORE

Sep 11, 2019 in Apache Spark by ravikiran
 • 4,620 points • 1,560 views
0 votes
1 answer

How to add package com.databricks.spark.avro in spark?

Start spark shell using below line of ...READ MORE

Jul 23, 2019 in Apache Spark by Ritu
 • 3,681 views
0 votes
1 answer

What is RDD Lineage in Spark?

Hey, Lineage is an RDD process to reconstruct ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,770 points • 4,467 views
0 votes
1 answer

load/save text file in spark

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

Jul 22, 2019 in Apache Spark by Giri
 • 3,670 views
+1 vote
1 answer

Need to load 40 GB data to elasticsearch using spark

Did you find any documents or example ...READ MORE

Nov 5, 2019 in Apache Spark by Begum
 • 1,449 views
0 votes
1 answer

Scala: error: value unary_+ is not a member of (Int, Int)

All prefix operators' symbols are predefined: +, -, ...READ MORE

Jul 22, 2019 in Apache Spark by karan
 • 3,630 views
+1 vote
1 answer

By default how many partitions are created in RDD in Apache spark?

Well, it depends on the block of ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,999 views
0 votes
1 answer

Scala: Add user input to array

You can try this:  object printarray { ...READ MORE

Jun 19, 2019 in Apache Spark by Dinesha
 • 4,917 views
+1 vote
0 answers

Difference Between rdd dataframe dataset [closed]

Sep 13, 2019 in Apache Spark by Rajesh pagadala
closed Sep 13, 2019 by Omkar • 1,231 views
0 votes
1 answer

Unable to use ml library in pyspark

The error message you have shared with ...READ MORE

Jul 30, 2019 in Apache Spark by Karan
 • 3,116 views
0 votes
3 answers

I don't understand the reason behind Spark RDD being immutable.

There are few reasons for keeping RDD ...READ MORE

Apr 18, 2019 in Apache Spark by santlal561987@gmail.com
 • 13,131 views
0 votes
1 answer

How to start spark history server?

Hey, You can use this command to start​ ...READ MORE

Jul 25, 2019 in Apache Spark by Gitika
 • 65,770 points • 3,268 views
0 votes
1 answer

Error : split value is not a member of org.apache.spark.sql.Row

spark.read.csv is used when loading into a ...READ MORE

Jul 22, 2019 in Apache Spark by Firoz
 • 3,354 views
0 votes
1 answer

How to create paired RDD using subString method in Spark?

Hi, If you have a file with id ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,870 views
0 votes
1 answer

How SparkSQL is different from HQL and SQL?

Hi, SparkSQL is a special component on the ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,770 points • 4,126 views
0 votes
1 answer

What are these in scala : _* & @_*

As is widely used, and has different ...READ MORE

Jul 31, 2019 in Apache Spark by Turic
 • 2,894 views
+1 vote
0 answers

What is the use case of map and flatMap? [closed]

What is the major use case for ...READ MORE

Aug 25, 2019 in Apache Spark by anonymous
 • 130 points
closed Aug 26, 2019 by Omkar • 1,814 views
0 votes
1 answer

How to declare a Empty Scala Map?

Hi, You can either declare an empty Scala ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points
edited Jul 29, 2019 by Gitika • 2,841 views
0 votes
1 answer

Spark: Read from Hive, store in HDFS

Below is an example of reading data ...READ MORE

Jul 26, 2019 in Apache Spark by Lohit
 • 2,952 views
0 votes
1 answer

How to concatenate Maps in Scala?

Hey, You can concatenate/join two Maps in more than ...READ MORE

Jul 29, 2019 in Apache Spark by Gitika
 • 65,770 points
edited Jul 29, 2019 by Gitika • 2,779 views
0 votes
1 answer

error: reassingment to val

Hi, This error will only generate when you ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,770 points • 3,760 views
0 votes
1 answer

Create dataframe for Avro file

Yes, we can work with Avro files ...READ MORE

Jul 22, 2019 in Apache Spark by Rishi
 • 2,845 views
0 votes
1 answer

Passing condition dynamically to Spark application.

You can try this: d.filter(col("value").isin(desiredThings: _*)) and if you ...READ MORE

Feb 19, 2019 in Apache Spark by Omkar
 • 69,220 points • 9,441 views
0 votes
1 answer

Average function is not commutative and associative?

Hey, I guess the only problem with the ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,774 views
0 votes
1 answer

RDD word count with line numbers

df = spark.createDataFrame([("A", 2000), ("A", 2002), ("A", ...READ MORE

Jul 25, 2019 in Apache Spark by Siri
 • 2,620 views
0 votes
1 answer

Spark + Hive connectivity

The problem is probably with the command. ...READ MORE

Aug 1, 2019 in Apache Spark by Rishni
 • 2,307 views
0 votes
1 answer

Spark comparing two big data files using scala

Try this and see if this does ...READ MORE

Apr 2, 2019 in Apache Spark by Omkar
 • 69,220 points • 7,538 views
0 votes
1 answer

How to concatenate sets in Scala?

Hey, Yes, there are two ways of doing ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,296 views
0 votes
1 answer

error:error: only classes can have declared but undefined members.

Hi, This happens in Scala whenever you won't ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,547 views
0 votes
1 answer

What is Piping in Spark?

Hi, Spark provides a pipe() method on RDDs. ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,770 points • 3,399 views
–2 votes
1 answer

What is the difference in Java’s “If..Else” and Scala’s “If..Else”? [closed]

Hey, Java’s “If. Else”: In Java, “If. Else” is a statement, ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,770 points • 2,212 views
0 votes
1 answer

Spark to check if a particular string exists in a file

You can use this: lines = sc.textFile(“hdfs://path/to/file/filename.txt”); def isFound(line): if ...READ MORE

Mar 15, 2019 in Apache Spark by Raj
 • 8,085 views
0 votes
0 answers

WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable [closed]

Hi All I am running Scala program on ...READ MORE

May 5, 2019 in Apache Spark by Vishal
closed May 6, 2019 by Omkar • 5,757 views
0 votes
1 answer

Scala: save filtered data row by row using saveAsTextFile

Try this code, it worked for me: val ...READ MORE

Aug 2, 2019 in Apache Spark by Karan
 • 1,861 views
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