Trending questions in Apache Spark

+2 votes
1 answer

Spark code takes too much time to run on cluster

Hi @asif, Share with us please the application ...READ MORE

Jan 22, 2020 in Apache Spark by Alexandru
 • 510 points • 1,561 views
+1 vote
0 answers

how to access hive view using spark2

We do not have access to hive ...READ MORE

Dec 29, 2019 in Apache Spark by anonymous
 • 130 points • 2,237 views
0 votes
1 answer

Join in RDD using keys

Suppose you have two dataset results( id, ...READ MORE

Aug 2, 2019 in Apache Spark by Trisha
 • 8,659 views
0 votes
1 answer

How fault tolerance is achieved in Apache Spark?

Hey, In Apache Spark, the data storage model is ...READ MORE

Jul 22, 2019 in Apache Spark by Gitika
 • 65,730 points • 9,070 views
+1 vote
2 answers

How do I get number of columns in each line from a delimited file??

Instead of spliting on '\n'. You should ...READ MORE

Aug 7, 2019 in Apache Spark by ashish
 • 6,167 views
0 votes
1 answer

Spark: Error while instantiating "org.apache.spark.sql.hive.HiveSessionState"

Seems like you have not started the ...READ MORE

Jul 25, 2019 in Apache Spark by Rohit
 • 8,640 views
0 votes
1 answer

Spark Error: java.lang.IllegalStateException: Cannot call methods on a stopped SparkContext.

There seems to be a problem with ...READ MORE

May 24, 2019 in Apache Spark by Jishan
 • 11,285 views
0 votes
1 answer

How to work with Matrix Multiplication in Apache Spark?

Hey, You can follow this below solution for ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,730 points • 8,215 views
0 votes
1 answer

What does the command df.registerTempTable() do?

df.registerTempTable(“airports”) This command is used to register ...READ MORE

Jul 14, 2019 in Apache Spark by James
 • 8,957 views
0 votes
1 answer

Spark error: Caused by: java.lang.RuntimeException: The root scratch dir: /tmp/hive on HDFS should be writable.

Give  read-write permissions to  C:\tmp\hive folder Cd to winutils bin folder ...READ MORE

Jul 11, 2019 in Apache Spark by Rajiv
 • 8,256 views
+1 vote
1 answer

How to convert a json file structure with values in single quotes to quoteless ?

You can do this by turning off ...READ MORE

Oct 4, 2019 in Apache Spark by Jisha
 • 4,550 views
+1 vote
1 answer

Cannot resolve Error In Spark when filter records with two where condition

Try df.where($"cola".isNotNull && $"cola" =!= "" && !$"colb".isin(2,3)) your ...READ MORE

Dec 13, 2019 in Apache Spark by Alexandru
 • 510 points
edited Dec 13, 2019 by Alexandru • 3,100 views
+1 vote
1 answer

Spark: java.io.FileNotFoundException

Hello, From the error I get that the ...READ MORE

Dec 13, 2019 in Apache Spark by Alexandru
 • 510 points • 4,598 views
+1 vote
2 answers

Spark: Can we add column to dataframe?

Yes we can add columns to the ...READ MORE

Oct 24, 2019 in Apache Spark by Siva
 • 160 points • 5,042 views
+1 vote
1 answer

Primary keys in Apache Spark

import sqlContext.implicits._ import org.apache.spark.sql.Row import org.apache.spark.sql.types.{StructType, StructField, LongType} val df ...READ MORE

Aug 9, 2019 in Apache Spark by ravikiran
 • 4,620 points • 6,593 views
0 votes
3 answers

How to transpose Spark DataFrame?

Please check the below mentioned links for ...READ MORE

Jan 1, 2019 in Apache Spark by anonymous
 • 20,748 views
0 votes
1 answer

How Foreach Operation works in Apache Spark?

Hi, foreach() operation is an action. It does not ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,757 views
0 votes
1 answer

Removing the header of a text file in SparkRDD

1) First we loaded the data to ...READ MORE

Jul 31, 2019 in Apache Spark by Namitha
 • 6,669 views
0 votes
1 answer

"main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream

1. We will check whether master and ...READ MORE

Jul 29, 2019 in Apache Spark by Yogi
 • 6,705 views
0 votes
1 answer

How SortBykey() operation works in Spark?

Hey, sortByKey() is a transformation. It returns an RDD sorted ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,454 views
0 votes
1 answer

Spark Null Pointer Exception.

I used Spark 1.5.2 with Hadoop 2.6 ...READ MORE

Jul 19, 2019 in Apache Spark by ravikiran
 • 4,620 points • 7,034 views
0 votes
1 answer

How to call the Debug Mode in PySpark?

As far as I understand your intentions ...READ MORE

Jul 26, 2019 in Apache Spark by ravikiran
 • 4,620 points • 6,713 views
0 votes
1 answer

Can anyone explain the sparse vector in Spark?

Hey, A sparse vector is used for storing ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,285 views
0 votes
1 answer

How do I connect to a HIVE Meta store through a program in SparkSQL?

In spark 2.0.+ it should look something ...READ MORE

Sep 5, 2019 in Apache Spark by ravikiran
 • 4,620 points • 4,767 views
0 votes
1 answer

How to append a list in Scala?

Hey, For this purpose, we use the single ...READ MORE

Jul 26, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,428 views
0 votes
1 answer

Date formats : how to cast string to date?

Try this, it should work: > from pyspark.sql.functions ...READ MORE

Jul 29, 2019 in Apache Spark by Niall
 • 6,228 views
0 votes
1 answer

How to compute the square root of sum of squares of numbers?

Hey, You need to follow some steps to complete ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,309 views
+1 vote
1 answer

How do I turn off INFO Logging in Spark?

Hi, You need to edit one property in ...READ MORE

Jul 12, 2019 in Apache Spark by ravikiran
 • 4,620 points
edited Dec 20, 2020 by MD • 6,710 views
+1 vote
1 answer

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

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

Jul 10, 2019 in Apache Spark by Jishnu
 • 6,689 views
0 votes
1 answer

Read multiple xml files in Spark

You can do this using globbing. See ...READ MORE

Jul 25, 2019 in Apache Spark by Jack
 • 6,018 views
0 votes
1 answer

what are the spark job and spark task and spark staging ?

In a Spark application, when you invoke ...READ MORE

Mar 18, 2019 in Apache Spark by Pavan
 • 11,603 views
0 votes
1 answer

How to create RDD from existing RDD in scala?

scala> val rdd1 = sc.parallelize(List(1,2,3,4,5))                           -  Creating ...READ MORE

Feb 29, 2020 in Apache Spark by anonymous
 • 1,698 views
+1 vote
1 answer

How to read a data from text file in Spark?

Hey, You can try this: from pyspark import SparkContext SparkContext.stop(sc) sc ...READ MORE

Aug 6, 2019 in Apache Spark by Gitika
 • 65,730 points • 5,363 views
0 votes
1 answer

Spark:error:throws stack overflow when union a lot.

Hey, Use SparkContext.union(...) instead to union many RDDs at once You ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,730 points • 5,660 views
0 votes
1 answer

error: identified expected but integer literal found.

Hi, You can resolve this error with a ...READ MORE

Jul 4, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,797 views
+1 vote
2 answers

sparkstream.textfilstreaming(localpathdirectory). I am getting empty results

Hey @c.kothamasu You should copy your file to ...READ MORE

Nov 7, 2019 in Apache Spark by Manas
 • 1,230 views
0 votes
1 answer

Which File System is supported by Apache Spark?

Hi, Apache Spark is an advanced data processing ...READ MORE

Jul 5, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,674 views
–1 vote
0 answers

what is the benefit of repartition(1) and coalesce(1). When we save data we use df.repartition(1).so how many partition it will create

what is the benefit of repartition(1) and ...READ MORE

Jul 26, 2019 in Apache Spark by kumar Ma
 • 5,758 views
0 votes
1 answer

How to launch spark application in cluster mode in Spark?

Hi, To launch spark application in cluster mode, ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 5,219 views
0 votes
1 answer

PySpark not starting: No active sparkcontext

Seems like Spark hadoop daemons are not ...READ MORE

Jul 30, 2019 in Apache Spark by Jishan
 • 5,350 views
0 votes
1 answer

Scala - Error in Inheritance: <console>:: error: not found: value

You need to declare the variable which ...READ MORE

Aug 1, 2019 in Apache Spark by Karan
 • 5,193 views
+1 vote
1 answer

How to convert JSON file to AVRO file and vise versa

Try including the package while starting the ...READ MORE

Aug 26, 2019 in Apache Spark by Karan
 • 3,952 views
0 votes
1 answer

Cache() vs persist() in Spark

The cache() is used only the default storage level ...READ MORE

Mar 8, 2019 in Apache Spark by Raj
 • 11,277 views
0 votes
1 answer

How to check if a particular keyword exists in Apache Spark?

Hey, You can try this code to get ...READ MORE

Jul 23, 2019 in Apache Spark by Gitika
 • 65,730 points • 5,338 views
+1 vote
1 answer

What is reduce() action in Spark?

Hey, It takes a function that operates on two ...READ MORE

Jul 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 6,080 views
0 votes
1 answer

Spark Error: StackOverflowError : Exception in thread "main" java.lang.StackOverflowError at org.apache.spark.rdd.UnionRDD$$anonfun$1.apply

Hey, It already has SparkContent.union and it does know how to ...READ MORE

Jul 31, 2019 in Apache Spark by Gitika
 • 65,730 points • 4,836 views
0 votes
1 answer

How to find the number of elements present in the array in a Spark DataFame column?

You can select the column and apply ...READ MORE

Jun 6, 2018 in Apache Spark by Shubham
 • 13,490 points • 23,013 views
0 votes
1 answer

What is ofDim in Scala?

Hey, ofDim() is a method in Scala that ...READ MORE

Jul 24, 2019 in Apache Spark by Gitika
 • 65,730 points • 4,999 views
0 votes
1 answer

error: identifier expected but ']' found.

Hi, You can try this remove brackets from ...READ MORE

Jul 3, 2019 in Apache Spark by Gitika
 • 65,730 points • 5,895 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 • 21,398 views
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