Most answered questions in Big Data Hadoop

0 votes
2 answers

Namenode is not getting started

Hi, You can do one thing, first delete all ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Namisha
 • 753 views
0 votes
2 answers

Error in running hdfs commands

Hey, You can check this command also  hadoop fs ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Rashi
 • 1,236 views
0 votes
2 answers

Exception in thread "main" java.lang.UnsupportedClassVersionError

Hi, keep in mind do not forget to ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Rashi
 • 1,076 views
0 votes
2 answers

How to set up Map and Reduce Tasks?

Hi, The number of map tasks for a ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Rashi
 • 1,850 views
0 votes
2 answers

What is the relationship between Hadoop and Database?

Hadoop software framework work is very well ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dinesh
 • 1,029 views
0 votes
2 answers

E0901: Namenode [localhost:8020] not allowed, not in Oozies whitelist

You can add this below property in oozie-site.xml: <property> <name>oozie.service.HadoopAccessorService.jobTracker.whitelist</name> <value>myaddress:8020</value> </property> Hope ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Shiva
 • 1,817 views
0 votes
2 answers

What is ElasticSearch Hadoop?

it as a connector that allows data to flow bi-directionaly so ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dinish
 • 1,005 views
0 votes
2 answers

Explain to me the difference between Name Node and Secondary Name Node

Secondary namenode is just a helper for ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dhiman
 • 3,515 views
0 votes
2 answers

if HDFS threshold has been reached. What is the our approach to resolve this issue?

This was a fundamental issue in HDFS ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,173 views
0 votes
2 answers

Error While Running Oozie Project

You need to add your current user ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dhimanshu
 • 540 views
0 votes
2 answers

Why we require SSH during hadoop installation?

Hey, SSH setup is required to do different ...READ MORE

Jun 11, 2019 in Big Data Hadoop by Gitika
 • 65,910 points
edited Jun 11, 2019 by Gitika • 5,028 views
0 votes
2 answers

Limit the maximum number of dynamic partitions in Hive

if you are already on hive shell ...READ MORE

Jul 23, 2020 in Big Data Hadoop by Shantanu
 • 190 points • 7,300 views
0 votes
2 answers

How to pass a password to Sqoop import command?

You can directly pass the password in ...READ MORE

May 15, 2019 in Big Data Hadoop by Raj
 • 6,665 views
0 votes
2 answers

How to change the location of a table in hive?

Changing location requires 2 steps: 1.) Change location ...READ MORE

Feb 12, 2020 in Big Data Hadoop by Saksham Sehrawet
 • 8,225 views
0 votes
2 answers

What is the difference between Oozie and Nifi ?

The main difference between Oozie and Nifi ...READ MORE

May 7, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 3,605 views
+1 vote
2 answers

Sir if i have no knowledge of any programming language then it is good or bad for me but i have learned Big Data and Hadoop so i can get a job or not

Hey Rahul,  You have mentioned that you have no ...READ MORE

May 6, 2019 in Big Data Hadoop by poonam
 • 1,121 views
0 votes
2 answers

Error:- cannot locate pig-core-hr. jar. do ‘ant -Dhadoopversion=23 jar’

Even I got the same error, I ...READ MORE

Apr 26, 2019 in Big Data Hadoop by disha
edited Apr 29, 2019 by Gitika • 1,441 views
0 votes
2 answers

Hey for all, how to get on large data i want use in hadoop?

Hi, To work with Hadoop you can also ...READ MORE

Jul 30, 2019 in Big Data Hadoop by Sunny
 • 841 views
0 votes
2 answers

How to see MySql service is running or not using linux command?

Hi, You can simply run the following commands ...READ MORE

Jan 21, 2020 in Big Data Hadoop by anonymous
 • 1,966 views
0 votes
2 answers

How are Partitioning and Bucketing different from each other in Apache Hive?

Let us consider a student database table ...READ MORE

Apr 15, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,494 views
0 votes
2 answers

Explain to me the concept of HUE.

Definition: HUE is an open-source SQL Cloud Editor, ...READ MORE

May 16, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,396 views
0 votes
2 answers

Why we use --split by command in Sqoop?

In simple explanation, When specify SPLIT_BY only ...READ MORE

Feb 6, 2020 in Big Data Hadoop by Ramji Sridaran
 • 14,073 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 • 3,659 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
 • 69,210 points • 724 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
 • 6,011 views
0 votes
2 answers

Not able to use npm after installing yarn

 "The easiest way to get started is ...READ MORE

Feb 5, 2019 in Big Data Hadoop by rajesh
 • 1,270 points • 1,025 views
0 votes
2 answers

Do we need to format datanode to store data

That was not important. If you can ...READ MORE

Jan 16, 2019 in Big Data Hadoop by Sam
 • 160 points • 3,328 views
0 votes
2 answers

Hive update and delete limitations

Vinyl-like crackle sounds. And what is my ...READ MORE

May 3, 2020 in Big Data Hadoop by Carter
 • 140 points • 5,598 views
0 votes
2 answers

Hadoop error: Input path does not exist

I was able to fix the issue. ...READ MORE

Jan 13, 2019 in Big Data Hadoop by Ponezhil Ramu
 • 13,530 views
0 votes
2 answers

How to get column names from Hive table?

To get all the columns of a ...READ MORE

Jun 4, 2019 in Big Data Hadoop by anonymous
edited Jun 4, 2019 by Omkar • 19,036 views
+1 vote
2 answers

Hadoop Hive: Not recognizing alias named in select part?

You can not use column aliases in ...READ MORE

Nov 26, 2019 in Big Data Hadoop by anonymous
 • 10,289 views
0 votes
2 answers

Sqoop: Could not load mysql driver exception.

I add mysql driver for sqoop and it ...READ MORE

Mar 1, 2020 in Big Data Hadoop by Manh Quang
 • 180 points • 3,330 views
+2 votes
2 answers

Create HIVE Table with multi character delimiter

FILELDS TERMINATED BY does not support multi-character delimiters. ...READ MORE

Oct 3, 2018 in Big Data Hadoop by slayer
 • 29,350 points • 13,922 views
0 votes
2 answers

How to convert .txt file to Hadoop's sequence file format

import java.io.IOException; import java.net.URI; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.IOUtils; import ...READ MORE

Oct 12, 2018 in Big Data Hadoop by Sanjay
 • 3,180 views
0 votes
2 answers

Is there a .NET equivalent to Apache Hadoop?

Hadoop is a Java-based platform. So, to ...READ MORE

Jul 16, 2020 in Big Data Hadoop by Suhana
 • 340 points • 1,403 views
0 votes
2 answers

Not able to run Hive queries.

If you are loading your data from ...READ MORE

Mar 3, 2020 in Big Data Hadoop by chima
edited Mar 4, 2020 by Gitika • 1,394 views
0 votes
2 answers

Difference between Hadoop 1 and 2

Hadoop V.1.x Components Apache Hadoop V.1.x has the ...READ MORE

Aug 28, 2018 in Big Data Hadoop by zombie
 • 3,790 points • 19,003 views
0 votes
2 answers

Which of these will vanish: Flink vs Spark?

At first glance, Flink and Spark would ...READ MORE

Aug 13, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,018 views
0 votes
2 answers

Which framework allows random, realtime read/write access to hundreds of terabytes of data?

For this type of case you can ...READ MORE

Aug 14, 2018 in Big Data Hadoop by anonymous
 • 2,051 views
0 votes
2 answers

How does Hadoop/Spark is used for building large analytics report?

The best possible framework for this task ...READ MORE

Aug 7, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 585 views
0 votes
2 answers

How do I integrate Kdb+ and hadoop?

 kdb+ could be installed on every Hadoop ...READ MORE

Aug 6, 2018 in Big Data Hadoop by Abhi
 • 3,720 points • 1,413 views
0 votes
2 answers

What is the difference between the Smart Data Access of SAP HANA and SAP HANA Vora?

Hadoop: Used to store Big Data in ...READ MORE

Jun 21, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,107 views
0 votes
2 answers

Hadoop fs -stat command

hadoop fs -stat is as hadoop command used ...READ MORE

Oct 25, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 10,147 views
+5 votes
2 answers

Hive to HDFS transfer

Hive does not store data. Hive is ...READ MORE

Sep 20, 2018 in Big Data Hadoop by SM
 • 3,651 views
0 votes
2 answers

What is Shuffle Phase?

The process where the intermediate results from ...READ MORE

Mar 27, 2019 in Big Data Hadoop by Krishnan
 • 140 points • 1,256 views
0 votes
2 answers

Difference between HDFS and NFS

In NFS, the data is stored only ...READ MORE

Feb 4, 2019 in Big Data Hadoop by Kumar
 • 14,250 views
+1 vote
2 answers

What does hadoop fs -du command gives as output?

du command is used for to see ...READ MORE

Jul 24, 2019 in Big Data Hadoop by Lokesh Singh
 • 5,488 views
0 votes
2 answers

hadoop copy a local file system folder to HDFS

There's a typo in your command: "hadopp". ...READ MORE

Feb 4, 2019 in Big Data Hadoop by Lohith
 • 24,526 views
0 votes
2 answers

Download & Install Cloudera parcels without being connected to internet?

You can find the details over here ...READ MORE

Aug 16, 2018 in Big Data Hadoop by Priyaj
 • 58,090 points • 1,372 views
0 votes
2 answers

Hadoop is not able to find jps command

jps is actually not a command of ...READ MORE

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 14,110 views
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