Most viewed questions in Big Data Hadoop

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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
 • 895 views
0 votes
1 answer

Hadoop backup and recovery tool and guidance

There are a few options for backup ...READ MORE

Jan 4, 2019 in Big Data Hadoop by Frankie
 • 9,830 points • 894 views
0 votes
1 answer

Unable to create table in Hive

It is looking like your Hadoop daemons ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Yogi
 • 893 views
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1 answer

Why Hadoop is tightly bound to linux?

As far as I can tell, using ...READ MORE

Apr 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 893 views
0 votes
1 answer

What are the relational operators available related to loading and storing in pig language?

Hey, For loading data and storing it into ...READ MORE

May 3, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 892 views
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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
 • 891 views
0 votes
1 answer

How to increase Sqoop Accumulo write buffer size?

By default the write buffer size is ...READ MORE

May 17, 2019 in Big Data Hadoop by Rishi
 • 891 views
+1 vote
2 answers

Error: com/eng/mr/WordCountDriver : Unsupported major.minor version 52.0

The reason why you get this error ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Venkita
 • 240 points • 889 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
 • 65,770 points • 889 views
0 votes
1 answer

Hdfs cluster and Master/standby Machine

Client submits job to Namenode. To achieve this, Client ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Raj
 • 887 views
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1 answer

How to submit bundle features in Oozie?

Hey, You can use this example to learn ...READ MORE

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 887 views
–1 vote
1 answer

How to restrict nodes that talk to namenode?

Step 1: Create includes file in /home/hadoop ...READ MORE

Jan 5, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 887 views
0 votes
1 answer

Does HQL query go to all the nodes to process data?

InputSplits are created by logical division of ...READ MORE

Jul 26, 2019 in Big Data Hadoop by Tina
 • 885 views
0 votes
1 answer

HiveServer2 connection URL format

The HiveServer2 connection URL has the following ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Giri
 • 882 views
0 votes
1 answer

How to add filter for groups in Hue?

Open the Hue configuration file Search for [[ldap]] section Search for [[[groups]]] section Set the ...READ MORE

May 28, 2019 in Big Data Hadoop by Karan
 • 882 views
0 votes
1 answer

How to write mapper code for Hadoop in Python?

Hi@akhtar, Any job in Hadoop must have two ...READ MORE

Oct 16, 2020 in Big Data Hadoop by MD
 • 95,460 points • 881 views
0 votes
1 answer

Installing WebHCat on a SLES OS

apt-get is used for Ubuntu or other debian ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Emily
 • 881 views
0 votes
1 answer

How Dumb operator used in pig?

Hey, The Dumb operator is used to run the pig ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 881 views
0 votes
1 answer

which one to choose for log analysis?

It is not about that you can ...READ MORE

Apr 6, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 881 views
0 votes
1 answer

Oozie Uber JARs support configuration

You can configure Oozie to handle Uber ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Karan
 • 880 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
 • 69,220 points • 880 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
 • 69,220 points • 880 views
0 votes
1 answer

Sqoop set path for compiled objects

While you use the sqoop command (I ...READ MORE

May 17, 2019 in Big Data Hadoop by Kunal
 • 878 views
0 votes
1 answer

Is it possible to start a zookeeper server instance in process?

To start ZooKeeper you have to execute ZooKeeperServerMain class. You can use ...READ MORE

Oct 9, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 878 views
0 votes
1 answer

Explain the CLI in Zookeeper?

Hey, ZooKeeper Command Line Interface (CLI) is used ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 877 views
0 votes
1 answer

Why should we use "distinct" keyword in pig script?

Hey, The "distinct" statement is very simple. It ...READ MORE

May 3, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 877 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
 • 9,350 points • 876 views
0 votes
1 answer

Which is better to create a Hadoop Job? MapRed or MapReduce package?

There is no much difference between the ...READ MORE

May 13, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points
edited May 14, 2019 by Omkar • 875 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
 • 95,460 points • 872 views
0 votes
1 answer

Hadoop on OSX “Unable to load realm info from SCDynamicStore”

Add the following to your hadoop-env.sh file: export ...READ MORE

Oct 8, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 872 views
0 votes
1 answer

Zookeeper: client.HConnnectionManager HConbectionImplementation: Cant get connection to Zookeeper:KeeperErrorCode

In edureka vm once you start hbase ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Chiraya
 • 871 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
 • 69,220 points • 871 views
0 votes
1 answer

Why Get DATA keyword has been used in zookeeper?

Hey, It returns the associated data of the ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 868 views
0 votes
1 answer

how to make an existing hadoop cluster self adaptive?

Hey, @Sanjana, You can't shrink or expand nodes ...READ MORE

Jul 16, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 867 views
0 votes
1 answer

What is Oozie Sqoop submit command?

Hey, This is the command you can use: oozie ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points
edited Jun 26, 2019 by Gitika • 867 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
 • 865 views
0 votes
1 answer

How to configure the metastore service to communicate with the MySQL database in Hive?

Hey, This step shows the configuration properties you ...READ MORE

May 29, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 864 views
0 votes
1 answer

How to achieve maximum memory to disk I/O ratio?

You need to tune io.sort.mb value until ...READ MORE

Sep 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 864 views
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
 • 863 views
0 votes
1 answer

What is Hadoop?

Hadoop is simply a free and open-source ...READ MORE

Nov 24, 2021 in Big Data Hadoop by Edureka
 • 12,690 points • 859 views
0 votes
1 answer

Mapreduce shuffle and sort

The mapreduce task happens in the following ...READ MORE

Dec 27, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 859 views
0 votes
1 answer

How to create a file in Linux from terminal window?

Hey, Nothing to worry about creating any file ...READ MORE

May 13, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 858 views
0 votes
1 answer

Can I run Hadoop with Docker for both DEV and PROD environments?

Hi, Yes, you can run Hadoop with Docker ...READ MORE

Jan 24, 2020 in Big Data Hadoop by MD
 • 95,460 points • 857 views
0 votes
1 answer

Explain how the MongoDB MapReduce and Hadoop MapReduce are similar to each other and explain the differences if there are any.

Let us discuss the few differences between ...READ MORE

Jun 18, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 857 views
0 votes
1 answer

How to create table in cassandra?

Hi@akhtar, To create table in cassandra, you have ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 856 views
0 votes
1 answer

How to start and stop Master in HBase?

Hello, Using the “local-master-backup.sh” you can start up ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 856 views
0 votes
1 answer

Is there a good online tutorial for Hadoop development on a Windows 7 machine?

I would suggest you go through this ...READ MORE

Mar 29, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 855 views
0 votes
1 answer

How to set history server api in Hue?

You have to set this in hue configuration ...READ MORE

May 30, 2019 in Big Data Hadoop by jana
 • 854 views
0 votes
1 answer

Hadoop with Python: How to use python to stop Hadoop tasktracker?

Here you go os.system('sudo -u hadoop bin/hadoop-daemon.sh stop ...READ MORE

Nov 16, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 854 views
0 votes
1 answer

Why Count keyword is used in HBase?

Hey, An aggregate function that returns the number ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 853 views
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