Most viewed questions in Big Data Hadoop

+1 vote
2 answers

Hadoop Administration

Make the following changes to your configuration ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Simran
 • 1,196 views
0 votes
1 answer

What should be the choice of database and what type of data format is suitable for Spark/hadoop?

Use Parquet. I'm not sure about CSV ...READ MORE

Sep 28, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,195 views
+1 vote
1 answer

Client not able to connect to cluster

There could be multiple reasons: Make sure you ...READ MORE

Sep 23, 2019 in Big Data Hadoop by Rishi
 • 1,194 views
0 votes
0 answers

Real time access to data in hadoop

We need to store customer billing data ...READ MORE

Apr 30, 2020 in Big Data Hadoop by anonymous
 • 120 points • 1,193 views
0 votes
1 answer

What command is used to install MySql in centos?

You can use this command to install ...READ MORE

Apr 12, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,192 views
0 votes
1 answer

Using Microsoft SQL Server for Sqoop

To use Microsoft SQL Server for Sqoop, ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Ramay
 • 1,190 views
0 votes
1 answer

Explain what is WebDAV in Hadoop?

Hey, To support editing and updating files WebDAV ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,188 views
–1 vote
1 answer

Serde input and output

Input Processing Hive's execution engine (referred to as ...READ MORE

Dec 27, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,188 views
0 votes
1 answer

Hadoop: method to send output to multiple directories

setup: MultipleOutputs.addNamedOutput(job, "Output", TextOutputFormat.class, Text.class, Text.class); setup of reducer: mout ...READ MORE

Nov 13, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,187 views
+1 vote
1 answer

About Available Space Block Placement Policy

Hi, We know, In HDFS data is divided into ...READ MORE

Jan 29, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,185 views
0 votes
1 answer

Explain what is a sequence file in Hadoop?

Hello, To store binary key/value pairs, sequence file ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,185 views
0 votes
1 answer

What is group_name_filter property in Hue file?

The group_name_attr is used to set the username in the ...READ MORE

May 28, 2019 in Big Data Hadoop by Vasu
 • 1,185 views
0 votes
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 • 1,183 views
0 votes
1 answer

Other Distributed Alternatives to Big Data Hadoop

Yes, there are lot of alternatives to ...READ MORE

Mar 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,179 views
+1 vote
1 answer

When to use Hadoop, HBase, Hive and Pig?

MapReduce is just a computing framework. HBase has ...READ MORE

Nov 20, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 1,178 views
+1 vote
1 answer

Not able to create kms key using ambari.

Hi@Shilpa, There may be a problem with your ...READ MORE

Nov 4, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,178 views
0 votes
1 answer

List of all the functions that can be obtain from hive?

Hello, A list of all functions can be ...READ MORE

May 16, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,175 views
0 votes
1 answer

How to set Secret Key for Hue?

You have to set the secret key ...READ MORE

May 24, 2019 in Big Data Hadoop by Yogi
 • 1,173 views
0 votes
1 answer

Is there any way to setup Hadoop nodes (data nodes/namenodes) to use multiple volumes/disks?

Datanodes can store blocks in multiple directories ...READ MORE

Jun 20, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,171 views
0 votes
1 answer

Where can I find logs in Spark on YARN?

You can access logs through the command yarn ...READ MORE

Nov 8, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,168 views
0 votes
1 answer

Pig: ParseException: File not found

By convention, the pig script that you ...READ MORE

May 23, 2019 in Big Data Hadoop by Tina
 • 1,165 views
0 votes
1 answer

What are the operational commands of HBase?

Hey, These are the following operational commands: Get- Returns ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points
edited May 21, 2019 by Gitika • 1,163 views
0 votes
1 answer

what is big data hadoop

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

Feb 3, 2022 in Big Data Hadoop by CoolCoder
 • 4,420 points • 1,162 views
0 votes
1 answer

Sqoop Job not working

I have made a little change to ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Vishwa
 • 1,162 views
0 votes
1 answer

Sqoop vs Oracle Hadoop Connectors

Most of the connectors would have the ...READ MORE

May 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,161 views
0 votes
0 answers

Which of the following platforms does hadoop run on?

Which of the following platforms does hadoop ...READ MORE

Dec 10, 2021 in Big Data Hadoop by Kavya
 • 700 points • 1,160 views
0 votes
1 answer

Differences between Cassandra and Hadoop, Real-time Processing v/s Batch Processing

Hadoop is basically designed including HDFS loaded with ...READ MORE

Jun 18, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,159 views
0 votes
1 answer

Hadoop Documentation for Eclipse.

Few considerations to be taken are here: If ...READ MORE

Sep 11, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,155 views
0 votes
1 answer

Which is the easiest way for text analytics with hadoop?

Apache pig provides CSVExcelStorage class for loading ...READ MORE

Nov 22, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,153 views
0 votes
1 answer

Running Mapreduce on compressed data

It is very straight forward, no need ...READ MORE

Jul 24, 2019 in Big Data Hadoop by Nanda
 • 1,152 views
0 votes
1 answer

How does decreasing the block size make more space on Datanode?

When there is space in data nodes ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Krish
 • 1,152 views
0 votes
1 answer

How to set SQLite Query Configurations in Hue?

To set the query configurations, you will ...READ MORE

May 27, 2019 in Big Data Hadoop by Suri
 • 1,152 views
0 votes
1 answer

Hadoop installation issue on fedora 24

type jps and check whether namenode and datanode is ...READ MORE

Jan 24, 2019 in Big Data Hadoop by Frankie
 • 9,830 points • 1,152 views
0 votes
1 answer

What additional capability does Ganglia provide to monitor Hadoop?

Ganglia is an open-source, scalable and distributed ...READ MORE

Sep 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,152 views
0 votes
1 answer

Apache storm installation

The “conf/storm.yaml” file contains configurations of Storm. And ...READ MORE

Feb 14, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 1,150 views
0 votes
1 answer

Hadoop mapreduce java: NullPoint Exception

Try this: String cords = it.next().toString(); lattitude = Double.toString((inst.decode(cords))[0]); longitude ...READ MORE

Dec 14, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,150 views
0 votes
1 answer

How to use jar file without putting it in hdfs?

If by "using", you mean distributing it, ...READ MORE

Dec 6, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,150 views
0 votes
1 answer

How to start Command Line Interface in Zookeeper?

Hey, To start the CLI for zookeeper you can ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,149 views
0 votes
1 answer

How Sqoop import command works internally?

First when client execute Sqoop import commands through ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,149 views
0 votes
1 answer

Operation to simulate a Hadoop Production Cluster

In this case, what you can do ...READ MORE

Aug 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,148 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 • 1,147 views
0 votes
1 answer

How to execute combiner and partitioning program without adding package name?

Yes, it is possible to do so ...READ MORE

Jul 16, 2019 in Big Data Hadoop by Raman
 • 1,145 views
0 votes
1 answer

Use cases of Apache Oozie?

Hi, Apache Oozie is used by Hadoop system ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,145 views
0 votes
1 answer

Explain to me the installation procedures for RHadoop packages (RMR, RHDFS, RHBase).

Download packages rhdfs, rhbase, rmr2 and plyrmr ...READ MORE

Jun 28, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,144 views
–1 vote
1 answer

Facing the below error while installing mysql in VM

We would like to say that the ...READ MORE

Dec 21, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,143 views
0 votes
1 answer

Hive Query to sort data

If you are trying to sort first ...READ MORE

Jul 14, 2019 in Big Data Hadoop by Tina
 • 1,142 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 • 1,141 views
0 votes
1 answer

What are the different hdfs dfs commands to perform copy operation?

The different hdfs dfs commands to perform ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,139 views
0 votes
1 answer

In Hadoop MapReduce, how can i set an Object as the Value for Map output?

Try this and see if it works: public ...READ MORE

Nov 21, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 1,139 views
0 votes
1 answer

How to see a running workflow, coordinate or bundle of job in Oozie?

Hey, You can use this example to see, $ ...READ MORE

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,137 views
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