Most voted questions in Big Data Hadoop

+1 vote
1 answer

How to count number of rows in alias in PIG?

COUNT is part of pig LOGS= LOAD 'log'; LOGS_GROUP= ...READ MORE

Oct 15, 2018 in Big Data Hadoop by Omkar
• 69,210 points
1,525 views
+1 vote
1 answer

Reading Performance in Hadoop Cluster

For speeding up reading performance of your ...READ MORE

Jul 25, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
179 views
+1 vote
0 answers

How to set up Hadoop cluster on Mac in intelliJ IDEA

I have Installed hadoop using brew and ...READ MORE

Jul 25, 2018 in Big Data Hadoop by Neha
• 6,300 points
673 views
+1 vote
3 answers

when i tried to run the hdfs namenode -format command...its failed to run..can anyone help me with this???

Hi Suriyaprakash, I guess the path for hadoop ...READ MORE

Jul 23, 2018 in Big Data Hadoop by avi_man_utd
7,480 views
+1 vote
1 answer

When I try to execute any Hadoop commands error pops up saying unable to find or load main class M

The error might be due to the ...READ MORE

Jul 17, 2018 in Big Data Hadoop by Frankie
• 9,830 points
720 views
+1 vote
1 answer

How can we list files in HDFS directory as per timestamp?

No, there is no other option to ...READ MORE

May 8, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
8,220 views
+1 vote
12 answers

How to check size of HDFS directory?

It is the same syntax. Use the ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Sowmya
39,196 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
4,362 views
+1 vote
1 answer

Why is jar file required to execute a MR code instead of class file?

We use hadoop keyword to invoke the ...READ MORE

Apr 24, 2018 in Big Data Hadoop by Shubham
• 13,490 points
513 views
+1 vote
1 answer

Why minimum 3 Journal Nodes are required in Hadoop HA architecture?

Initially in Hadoop 1.x, the NameNode was ...READ MORE

Apr 20, 2018 in Big Data Hadoop by kurt_cobain
• 9,390 points
8,032 views
+1 vote
1 answer

http://localhost:50070 not working in HADOOP

There are 2 case possible: 1. If you ...READ MORE

Apr 16, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
26,479 views
+1 vote
2 answers

How to authenticate username & password while using Connector for Cloudera Hadoop in Tableau?

Hadoop server installed was kerberos enabled server. ...READ MORE

Aug 21, 2018 in Big Data Hadoop by Priyaj
• 58,080 points
815 views
+1 vote
1 answer

Is it necessary to use Zookeeper in Hadoop Stack?

ZooKeeper is a centralized service for maintaining ...READ MORE

Mar 27, 2018 in Big Data Hadoop by Ashish
• 2,650 points
401 views
+1 vote
1 answer

Hadoop Installation Issue on Windows

Below is the main error you are ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
4,377 views
+1 vote
1 answer

Cassandra and Hadoop - realtime vs batch

Apache Hadoop, is a big data analytics ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
1,129 views
+1 vote
1 answer

Where to set hadoop.tmp.dir? core-site.xml or hdfs-site.xml?

hadoop.tmp.dir (A base for other temporary directories) is ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
6,944 views
+1 vote
1 answer

Is Hadoop only Framework in Big Data Ecosystem ?

Actually there are many other frameworks, one of ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,650 points
454 views
+1 vote
1 answer

Hadoop home path?

you can manually input the hadoop home ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,650 points
5,551 views
+1 vote
1 answer

HDFS Permission

You have to check permissions on the ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,650 points
208 views
+1 vote
1 answer

I installed Spark but while executing command, I am getting ‘hadoop’ command not found error?

For accessing Hadoop commands & HDFS, you ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,490 points
1,409 views
+1 vote
2 answers

Failed to restart Hadoop namenode using cloudera quickstart

You can use Cloudera Manager to manage ...READ MORE

Mar 19, 2018 in Big Data Hadoop by kurt_cobain
• 9,390 points

edited Jun 9, 2020 by MD 2,803 views
+1 vote
2 answers

Execute Pig Script from Grunt Shell

From your current directory run  pig -x local Then ...READ MORE

Oct 25, 2018 in Big Data Hadoop by Kunal
3,988 views
0 votes
0 answers
0 votes
1 answer

What are the five v's of big data

Big data is a collection of data ...READ MORE

Feb 4 in Big Data Hadoop by surbhi
• 3,810 points
290 views
0 votes
1 answer

What is big data engineering

Data engineer roles have recently become more ...READ MORE

Feb 4 in Big Data Hadoop by surbhi
• 3,810 points
108 views
0 votes
0 answers

what are the five v's of big data

Feb 4 in Big Data Hadoop by surbhi
• 3,810 points
63 views
0 votes
1 answer

what does velocity in big data mean

Velocity in big data refers to the ...READ MORE

Feb 3 in Big Data Hadoop by CoolCoder
• 4,360 points
192 views
0 votes
1 answer

what is big data hadoop

The Hadoop operating system is used to ...READ MORE

Feb 3 in Big Data Hadoop by CoolCoder
• 4,360 points
68 views
0 votes
0 answers

what is big data with examples

what is big data with examples READ MORE

Feb 1 in Big Data Hadoop by surbhi
• 3,810 points
77 views
0 votes
1 answer

what is big data technology

Big data refers to extremely large, and ...READ MORE

Feb 4 in Big Data Hadoop by CoolCoder
• 4,360 points
68 views
0 votes
1 answer

what is big data concept

Big data refers to extremely large, and ...READ MORE

Feb 4 in Big Data Hadoop by CoolCoder
• 4,360 points
87 views
0 votes
1 answer

what are the different features of big data analytics

What are the different features of big ...READ MORE

Feb 4 in Big Data Hadoop by CoolCoder
• 4,360 points
153 views
0 votes
0 answers

what are the problems associated with big data

what are the problems associated with big ...READ MORE

Jan 7 in Big Data Hadoop by surbhi
• 3,810 points
54 views
0 votes
1 answer

what is big data with examples

Big data refers to extremely large, and ...READ MORE

Feb 1 in Big Data Hadoop by CoolCoder
• 4,360 points
48 views
0 votes
1 answer

what is big data technology

Big data refers to extremely large, and ...READ MORE

Feb 1 in Big Data Hadoop by CoolCoder
• 4,360 points
36 views
0 votes
1 answer

what is big data concept

Big data refers to extremely large, and ...READ MORE

Feb 1 in Big Data Hadoop by CoolCoder
• 4,360 points
39 views
0 votes
1 answer

what are the different features of big data analytics

Features of big data analytics are- Velocity The pace ...READ MORE

Feb 1 in Big Data Hadoop by CoolCoder
• 4,360 points
68 views
0 votes
1 answer

what is pig in big data?

Pig is a high-level programming language for ...READ MORE

Jan 7 in Big Data Hadoop by Edureka
• 9,540 points
63 views
0 votes
0 answers

what are the characteristics of big data?

Jan 5 in Big Data Hadoop by Edureka
• 9,940 points
48 views
0 votes
1 answer

What is MapReduce?

MapReduce is a programming model and implementation ...READ MORE

Dec 24, 2021 in Big Data Hadoop by Kavya
• 700 points
75 views
0 votes
1 answer

What is HDFS?

HDFS is a distributed file system that ...READ MORE

Dec 24, 2021 in Big Data Hadoop by Kavya
• 700 points
64 views
0 votes
1 answer

which of the following says hadoop provides does pig break?

Apache Pig is a platform for analyzing ...READ MORE

Dec 24, 2021 in Big Data Hadoop by Kavya
• 700 points
120 views
0 votes
0 answers

what is big data technology?

Dec 17, 2021 in Big Data Hadoop by Edureka
• 9,940 points
38 views
0 votes
1 answer

Which of the following is not a hadoop output format?

The Hadoop Output Format checks the Output ...READ MORE

Dec 20, 2021 in Big Data Hadoop by Kavya
• 700 points
216 views
0 votes
1 answer

which of the following are hadoop built in counters?

MapReduce in Hadoop maintains some built-in counters ...READ MORE

Dec 20, 2021 in Big Data Hadoop by Kavya
• 700 points
68 views
0 votes
1 answer

what is hadoop ecosystem?

Hadoop Ecosystem is neither a programming language ...READ MORE

Dec 20, 2021 in Big Data Hadoop by Kavya
• 700 points
52 views
0 votes
1 answer

when is hadoop useful for an application?

Hadoop is a software framework for storing ...READ MORE

Dec 20, 2021 in Big Data Hadoop by CoderGirl
• 500 points
54 views
0 votes
1 answer

what does velocity in big data mean?

Velocity refers to the speed at which ...READ MORE

Dec 14, 2021 in Big Data Hadoop by Edureka
• 9,540 points
256 views
0 votes
1 answer

what was Hadoop written in?

The Hadoop framework is primarily developed in ...READ MORE

Dec 14, 2021 in Big Data Hadoop by Edureka
• 9,540 points
77 views
0 votes
1 answer

what is hbase in hadoop?

HBase is an open-source non-relational distributed database ...READ MORE

Dec 14, 2021 in Big Data Hadoop by anonymous
56 views