Most voted questions in Big Data Hadoop

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What are Hadoop daemons? What are their live examples?

First of all why Hadoop daemon are ...READ MORE

Apr 4, 2019 in Big Data Hadoop by rashmi
 • 1,041 views
0 votes
1 answer

How Big is Big data?

First question which strikes that how BIG ...READ MORE

Apr 4, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 509 views
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1 answer

How data distribution is done in Hadoop?

To understand how or what are the process ...READ MORE

Apr 4, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,664 views
0 votes
1 answer

How does a name-node understand by itself that it is facing a failure?

ZooKeeper-Failover-Controller or in short ZKFC is the ...READ MORE

Mar 27, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 571 views
0 votes
1 answer

Differentiate between Hive internal tables an external tables.

Hive comprises of an RDBMS(Relational-Database-Management-Systems) on its ...READ MORE

Mar 27, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 662 views
0 votes
1 answer

How is kafka used in big-data?

I can brief you the answer here ...READ MORE

Mar 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 607 views
0 votes
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Difference between Name node and Secondary Name node

Explain to me the difference between the ...READ MORE

Mar 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 379 views
0 votes
2 answers

Using PHP to get all file names in a folder stored in HDFS

So i found a workaround for the ...READ MORE

Mar 13, 2019 in Big Data Hadoop by Bhavish
 • 370 points
edited Mar 13, 2019 by Omkar • 3,723 views
0 votes
1 answer

Unable to run import script using sqoop

You are writing incorrect command. Please write ...READ MORE

Mar 8, 2019 in Big Data Hadoop by Raj
 • 566 views
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1 answer

Whenever I try to start the yarn daemon. ./start-dfs.sh it says access denied I have even tried changing the file permissions but it didn't work.

Seems like the ssh is not properly ...READ MORE

Mar 8, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 4,119 views
0 votes
1 answer

Hadoop installation on Ubuntu.

I have the perfect solution for you, ...READ MORE

Mar 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 927 views
0 votes
2 answers

Which one among the both MapRed and MapReduce is considered better to create a Hadoop job?

The new API is cleaner and faster. ...READ MORE

Mar 11, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 739 views
0 votes
1 answer

What is the difference between MapRed and MapReduce?

Firstly, we must learn that these are ...READ MORE

Mar 6, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,736 views
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1 answer

What does hadoop mean?

I see that you are confused about ...READ MORE

Mar 6, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 650 views
0 votes
1 answer

Installing Oozie on Linux System

Download Oozie from this link: http://www.apache.org/dyn/closer.lua/oozie/ Extract the files. ...READ MORE

Feb 28, 2019 in Big Data Hadoop by Rajan
 • 2,745 views
0 votes
1 answer

Hive installation on Linux

Download hive from: http://www.apache.org/dyn/closer.cgi/hive/ Extract the files using ...READ MORE

Feb 28, 2019 in Big Data Hadoop by Mahesh
 • 1,013 views
0 votes
2 answers

Installing HBase on windows

This procedure worked for me. https://medium.com/@bishupaulose/install ...READ MORE

Aug 16, 2019 in Big Data Hadoop by Sam
 • 6,037 views
0 votes
1 answer

How to install HBase on Linux?

To install Hbase, you first need the ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Tanisha
 • 4,271 views
0 votes
1 answer

Installing Pig on Linux System

It was a good thing that you ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Yuri
 • 772 views
0 votes
1 answer

How to install Hive on Windows Operating System?

First, download Hive from the following link: http://www.apache.org/dyn/closer.cgi/hive/ Next, ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Kirti
 • 14,589 views
0 votes
1 answer

How to install Flume on Linux?

All you have to do is get ...READ MORE

Feb 26, 2019 in Big Data Hadoop by Rishi
 • 3,991 views
0 votes
1 answer

Sqoop installation on Linux

Before installing Sqoop, make sure Hadoop is ...READ MORE

Feb 26, 2019 in Big Data Hadoop by Kriti
 • 998 views
0 votes
1 answer

Sqoop installation on Linux

Before installing Sqoop, make sure Hadoop is ...READ MORE

Feb 26, 2019 in Big Data Hadoop by Suman
 • 5,178 views
0 votes
1 answer

Copy files to all Hadoop DFS directories

Hi @Bhavish. There is no Hadoop command ...READ MORE

Feb 24, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 3,051 views
0 votes
1 answer

Not able to see racks in reports

Seems like rack awareness is not configure.  Try ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Lucky
 • 363 views
0 votes
1 answer

Installing Zookeeper on Windows

Follow the below-mentioned steps to install Zookeeper ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 28,946 views
0 votes
1 answer

How to run MapReduce program?

Eclipse is already installed in the Edureka ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Suman
 • 1,839 views
0 votes
1 answer

Error while accessing the file outformat method SetOutputpath

You have imported org.apache.hadoop.mapred.FileOutputFormat, ​​you need to import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat So, make ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 501 views
0 votes
1 answer

What do you understand by an inner bag and outer bag in Pig?

Outer bag or relation is nothing but ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Frankie
 • 9,830 points • 1,277 views
0 votes
1 answer

What are the different ways of executing pig scripts?

There are three ways to execute the ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Neha
 • 6,300 points • 3,810 views
0 votes
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How Pig programming gets converted into MapReduce jobs?

Could you please give me a brief ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Neha
 • 6,300 points • 689 views
0 votes
1 answer

Zookeeper Quorum value: zookeeper.ClientCnxn: Client session timed out

Enter the below command on the Web ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 2,209 views
0 votes
1 answer

Installing Spark on Windows

Follow the below steps to install Spark ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 2,001 views
0 votes
1 answer

How to install Hadoop on Windows system?

First you need to download Hadoop files. ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 3,018 views
0 votes
1 answer

How to install Zookeeper in Ubuntu?

There are two ways to install Zookeeper: You ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 4,912 views
0 votes
1 answer

How to install Scala on Centos?

Maybe you don't have the install point ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 2,526 views
0 votes
1 answer

Query regarding String and Varchar in Hive

Varchar datatype is also saved internally as ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 1,836 views
0 votes
1 answer

Location of Sqoop job

It depends on how you are running ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 1,420 views
0 votes
1 answer

Default file format in Hive

By Default its TextFileFormat for hive unless you use serdes to ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 3,567 views
0 votes
1 answer

Validation in Spark

This can be prevented if you use ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 1,258 views
0 votes
1 answer

Sqoop incremental append by date

Consider a table with 3 records which ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 4,322 views
0 votes
1 answer

Doubt regarding --last-value in sqoop while importing.

I think you are a little confused. ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 1,353 views
0 votes
1 answer

Hbase to pig integration

First enter into grunt shell: $ ./pig –x ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 776 views
0 votes
1 answer

How to install scala on Ubuntu?

You can install Scala using apt-get using the ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 979 views
0 votes
1 answer

How to install Hadoop in Ubuntu?

Hey. Follow these steps to install hadoop. First ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 1,432 views
0 votes
1 answer

How can I change data in HDFS?

You can not modified data once stored ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Rishi
 • 4,155 views
0 votes
1 answer

Edge nodes in Hadoop

Namenodes and Datanodes are a part of ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Siri
 • 3,288 views
0 votes
1 answer

To whom is the Hadoop job submitted?

When a hadoop job is submitted, it ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Loki
 • 874 views
0 votes
1 answer

How to select partition in Hive?

Follow these steps: A. Create Database ------------------ create database retail123; B. ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 9,883 views
0 votes
1 answer

Doubt in word count query

The COUNT function returns the number of ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 347 views
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