Most viewed questions in Big Data Hadoop

0 votes
1 answer

How to run HCatalog using Hive?

You can run HCatalog using the below ...READ MORE

May 17, 2019 in Big Data Hadoop by Likith
 • 622 views
0 votes
1 answer

What skills are required to be a Hadoop developer?

Hi@akhtar, To become a Hadoop developer, you should ...READ MORE

May 15, 2020 in Big Data Hadoop by MD
 • 95,440 points • 621 views
0 votes
1 answer

How to set Hbase truncate limit in hue?

Open the Hue configuration file and search for the [hbase] section ...READ MORE

May 27, 2019 in Big Data Hadoop by Harry
 • 621 views
0 votes
1 answer

How to access different directories in a Hadoop cluster?

You need to configure the client to ...READ MORE

Sep 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 621 views
0 votes
1 answer

Can we use different i/p and o/p format classes in mapreduce code?

Yes, InputFormatClass and OutputFormatClass are independent of ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Jimmy
 • 620 views
0 votes
1 answer

what is big data with examples

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

Feb 1, 2022 in Big Data Hadoop by CoolCoder
 • 4,400 points • 619 views
0 votes
1 answer

configure Cassendra in Linux system?

Hi@akhtar, To install cassandra in your system, follow ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,440 points • 618 views
0 votes
1 answer

Setting Job Tracker port in Hue

Open the hue configuration file and under the [[mapred_clusters]] property set ...READ MORE

May 31, 2019 in Big Data Hadoop by Raj
 • 618 views
0 votes
1 answer

Why Hadoop is not implemented using MPI?

 One of the big features of Hadoop/map-reduce ...READ MORE

Dec 4, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 618 views
0 votes
1 answer

Hive: Display column to which there is SELECT access

You can use the following query to ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Pratham
 • 616 views
0 votes
1 answer

How to change WebHCat default port?

The default port configuration is stored in ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Hari
 • 615 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
 • 69,230 points • 615 views
0 votes
1 answer

What is a pig script?

Hey, Pig script is nothing but a set ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 614 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 • 614 views
0 votes
1 answer

what is Region keyword and and store keyword in Hbase?

Hey, In HBase, tables are split into regions ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 613 views
0 votes
1 answer

All daemons starting except datanode

There could be more than one reason ...READ MORE

Dec 21, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 613 views
–1 vote
1 answer

Jobtracker and tasktracker is nor running.

Hi. You'll need to run start-mapred.sh if you want the ...READ MORE

Jan 19, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 612 views
0 votes
1 answer

What is the difference between Big Data and Data Mining?

Big data and data mining are two ...READ MORE

Aug 23, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 612 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 • 611 views
–1 vote
1 answer

Hadoop cluster is not running in vm

First check if all daemons are running: sudo ...READ MORE

Dec 26, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 606 views
0 votes
1 answer

How to perform Near-real time analytics using Hadoop?

To perform Near-real time analytics, you have ...READ MORE

Apr 24, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 606 views
0 votes
1 answer

Moving historyserver to another instance using curl command

Hi@Shilpa, You have double quotes inside a single ...READ MORE

Nov 9, 2020 in Big Data Hadoop by MD
 • 95,440 points • 605 views
0 votes
1 answer

HA ranger KMS ,

Hi@Shilpa, If you have installed Ranger through Ambari ...READ MORE

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,440 points • 605 views
0 votes
1 answer

Why Hadoop is not implemented using Message Passing Interface (MPI)?

One of the big features of Hadoop/map-reduce ...READ MORE

Sep 21, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 605 views
0 votes
1 answer

Hadoop Namenode start issue

Try restarting the master: $ sudo reboot $ sudo ...READ MORE

May 22, 2019 in Big Data Hadoop by Rishi
 • 604 views
0 votes
1 answer

How to create table inside database in MySql in Linux?

We can use this command to create ...READ MORE

Apr 16, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 601 views
0 votes
1 answer

Getting some warning/error while loading java file using Hbase commands

In your code, you have set some ...READ MORE

Dec 14, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 601 views
0 votes
1 answer

Why is using Combiner function not preferred in shuffling?

Combiner function is not preferred because when ...READ MORE

Jan 23, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 600 views
0 votes
1 answer

Can not list/access files of local system from hadoop

You can not directory use files from ...READ MORE

Dec 13, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 600 views
0 votes
1 answer

submitJob method in JobClient of Hadoop throws null pointer

I had this problem as well. But when ...READ MORE

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 600 views
0 votes
1 answer

Which is better Neo4j or HBASE ?

For your requirement, I would recommend you ...READ MORE

Apr 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 599 views
0 votes
1 answer

Sending hdfs file to a non hadoop cluster

There are different ways to do this. ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tarun
 • 598 views
0 votes
1 answer

Mention how many InputSplits is made by a Hadoop Framework?

Hey, Hadoop will make 5 splits 1 split for ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 598 views
0 votes
1 answer

Map reduce history moving instance using curl .

Hi@Shilpa, First thing, you will lose your metadata. ...READ MORE

Nov 9, 2020 in Big Data Hadoop by MD
 • 95,440 points • 596 views
0 votes
1 answer

What are the properties that have to be mentioned in . properties in Oozie?

Hey, These are the listed properties that need ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 596 views
0 votes
1 answer

Determining HDFS space in a cluster?

There are two ways to determine available ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 594 views
0 votes
1 answer

Usage: java FsShell [-put <localsrc> ... <dst>]

Hi@akhtar, You are trying to upload your file ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,440 points • 593 views
–1 vote
1 answer

When to use Sqoop?

Sqoop is used to transfer any data ...READ MORE

Dec 31, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 592 views
0 votes
1 answer

When was the first version of Hadoop released?

September 4, 2007 READ MORE

Apr 20, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 592 views
0 votes
1 answer

UnsupportedClassVersionError while running Mapreduce program.

Seems like the jar file was not ...READ MORE

Jan 18, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 591 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 • 590 views
0 votes
1 answer

Is no of block equal no of i/p split, no of container, no of mapper ?

Split size is approximately equal to block ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Ron
 • 590 views
0 votes
1 answer

Update hdfs data before stroring in MySql

Yes, you can update the data before ...READ MORE

Jan 27, 2019 in Big Data Hadoop by Omkar
 • 69,230 points • 590 views
0 votes
1 answer

Power of a number in Impala

Suppose you have fetched two values X ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Reshma
 • 589 views
0 votes
1 answer

User admin configuration in Hue

By default, Hue assigns the manually created ...READ MORE

May 27, 2019 in Big Data Hadoop by Rishi
 • 589 views
0 votes
1 answer

How to perform joins in Apache hive?

Hey, Join operation will work always with two ...READ MORE

May 16, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 589 views
–1 vote
1 answer

Spark multiple version without major version

Yes. It is not necessary to set ...READ MORE

Dec 27, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 588 views
0 votes
1 answer

How to use scala map as mutable map?

By default, Scala uses an immutable Map. ...READ MORE

Nov 17, 2020 in Big Data Hadoop by Gitika
 • 65,910 points • 584 views
+1 vote
1 answer

How to check a HDFS directory size?

Hi@akhtar, You can check the size of the ...READ MORE

Oct 5, 2020 in Big Data Hadoop by MD
 • 95,440 points • 584 views
0 votes
1 answer

why do we need MaPReduce in BigData Hadoop?

Hi, As we know Hadoop provides Hdfs as ...READ MORE

Feb 4, 2020 in Big Data Hadoop by MD
 • 95,440 points • 583 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.