Most viewed questions in Big Data Hadoop

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How to upgrade Apache Hadoop from 2.4.1 to 2.6.0?

If the downtime is not an issue, ...READ MORE

Sep 7, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 818 views
0 votes
1 answer

Gossip Protocol features.

Gossip Protocol in Cassandra is a peer-to-peer ...READ MORE

Jun 26, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 818 views
0 votes
1 answer

How to format a Hadoop Master Node?

Hi@akhtar, To start the Hadoop NameNode, you need ...READ MORE

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,460 points • 816 views
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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
 • 65,770 points • 816 views
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0 answers

Hello ,how know runing time on single node ,i am enter (local host:8088)but empty display ?

May 19, 2019 in Big Data Hadoop by anonymous
 • 816 views
0 votes
1 answer

Can we use different input and output format classes?

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

Jul 22, 2019 in Big Data Hadoop by Jishan
 • 814 views
0 votes
1 answer

How to load unencrypted tables to encrypted in Hive?

Refer to the below command to load ...READ MORE

May 30, 2019 in Big Data Hadoop by John
 • 814 views
0 votes
1 answer

What are Apache pig running modes?

Hey, You can run Apache pig runs in ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points
edited May 8, 2019 by Gitika • 814 views
0 votes
1 answer

Sqoop Validator Failure Handling

Once you have downloaded the failure handler ...READ MORE

May 15, 2019 in Big Data Hadoop by Rajat
 • 813 views
0 votes
1 answer

What does a Hadoop tester do?

Hadoop tester, like any other tester, has ...READ MORE

Nov 6, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 813 views
0 votes
1 answer

Default sqoop validator and how to change?

The default validator used is  org.apache.sqoop.validation.RowCountValidator. If you ...READ MORE

May 15, 2019 in Big Data Hadoop by Sharan
 • 812 views
0 votes
1 answer

When do Reduce tasks start in Hadoop?

As much I understand Reduce phase start ...READ MORE

Aug 9, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 811 views
+3 votes
0 answers

How to handle Sqoop failure program and restart the job from failed tables?

When running a Sqoop jobs on a ...READ MORE

Aug 30, 2019 in Big Data Hadoop by K
 • 130 points
reshown Mar 4 by K • 809 views
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1 answer

Avro - Getting Started

Refer to the example given here. It's ...READ MORE

Apr 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 809 views
0 votes
1 answer

How to add server-side configuration for secure operation in HBase?

Hey, First, ensure that your underlying HDFS configuration ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 808 views
0 votes
1 answer

Job Designer path in Hue

Hi. You can set a local path ...READ MORE

May 27, 2019 in Big Data Hadoop by Alice
 • 808 views
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0 answers

How to Execute job in oozie?

Can anyone explain how to execute Job ...READ MORE

Jun 26, 2019 in Big Data Hadoop by ritam
 • 807 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
 • 65,770 points • 806 views
0 votes
1 answer

What are the options for hadoop on scala?

Definitely check out Scalding. Speaking as a user ...READ MORE

Aug 22, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 805 views
0 votes
1 answer

How Hadoop distributes block writes into HDFS?

So, what happens is the slave node ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 805 views
0 votes
1 answer

Google Hadoop Filesystem Encryption

If you're asking if customer-supplied encryption keys ...READ MORE

Oct 18, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 804 views
0 votes
1 answer

what is big data technology

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

Feb 1, 2022 in Big Data Hadoop by CoolCoder
 • 4,420 points • 802 views
0 votes
1 answer

while executing this iam getting this error can anyone please help me with the solution please

Hi@srija, It seems you have not provided complete ...READ MORE

Apr 6, 2020 in Big Data Hadoop by MD
 • 95,460 points • 802 views
0 votes
1 answer

Determining number of reduces?

Number of reduces are set by the ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 800 views
0 votes
1 answer

Adding Ranger KMS server using ambari

Hi@Shllpa, It is asking for admin credentials. Did ...READ MORE

Sep 28, 2020 in Big Data Hadoop by MD
 • 95,460 points • 799 views
0 votes
1 answer

How to declare a variable in Scala?

The following is an example program that ...READ MORE

Nov 16, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 798 views
0 votes
1 answer

How to turn on REST gateway impersonation in HBase?

Hey, To turn on REST gateway impersonation, we ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 797 views
0 votes
1 answer

Elastisearch Hadoop

I will redirect you to a repository ...READ MORE

Apr 24, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 797 views
0 votes
1 answer

Executing mapper and reducer individually

This is what happens: Map reduce framework will ...READ MORE

Dec 18, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 797 views
0 votes
1 answer

HiveServer2: Enable LDAP Authentication for managed clusters

Follow the below mentioned steps to enable ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Karan
 • 796 views
0 votes
0 answers

what are the five v's of big data

Feb 4, 2022 in Big Data Hadoop by surbhi
 • 3,820 points • 795 views
0 votes
1 answer

Explain to me the Elasticsearch and Hadoop in a much better manner

I understand your problem, I suggest you download ...READ MORE

May 10, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 795 views
0 votes
1 answer

Different partitoners in Cassandra

Murmur3Partitioner is the default partitioner. It is ...READ MORE

Jun 27, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 795 views
0 votes
1 answer

Hive Hue: Restrict viewing of submitted jobs

Yes, this is possible. By default, any ...READ MORE

May 27, 2019 in Big Data Hadoop by Rasheed
 • 794 views
0 votes
1 answer

How to use SQLServer database with Sqoop?

First, download the SQLServer connector from Microsoft's ...READ MORE

May 15, 2019 in Big Data Hadoop by Karan
 • 794 views
0 votes
1 answer

what is big data technology

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

Feb 4, 2022 in Big Data Hadoop by CoolCoder
 • 4,420 points • 791 views
0 votes
1 answer

Hadoop Small File

Hi@himanshu, To monitor your Namenode, you can create ...READ MORE

Aug 24, 2020 in Big Data Hadoop by MD
 • 95,460 points • 791 views
0 votes
1 answer

Hive Query: Split value

You can use the SUBSTR() in hive ...READ MORE

Jul 25, 2019 in Big Data Hadoop by Paul
 • 790 views
0 votes
0 answers

what are the problems associated with big data

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

Jan 7, 2022 in Big Data Hadoop by surbhi
 • 3,820 points • 789 views
0 votes
1 answer

How can we access data with simple SQL knowledge in hive?

Hey, The following examples are simple, common data ...READ MORE

May 16, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 789 views
0 votes
1 answer

Why we need to install "ant -Dhadoopversion=23" ? What is the use of this?

Hi, We install ant to build pig, If the ...READ MORE

Apr 26, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 789 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
 • 787 views
0 votes
1 answer

ISR out of Replica

If the replica stays out of the ...READ MORE

Sep 24, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 787 views
0 votes
1 answer

What is Big Data?

Big data is a term that refers ...READ MORE

Nov 24, 2021 in Big Data Hadoop by Edureka
 • 12,700 points • 786 views
0 votes
1 answer

How to import scala packages?

Scala packages can be imported so that ...READ MORE

Nov 16, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 784 views
0 votes
1 answer

How can we ignore header line while loading data into Pig?

You can use the following code: A = ...READ MORE

Jul 22, 2019 in Big Data Hadoop by kiran
 • 784 views
0 votes
0 answers

What is Big Data Analytics?

Dec 10, 2021 in Big Data Hadoop by surbhi
 • 3,820 points • 782 views
0 votes
1 answer

Query regarding sqoop job

There no way to take any precautions ...READ MORE

May 23, 2019 in Big Data Hadoop by Imran
 • 782 views
0 votes
1 answer

What are different types of blocks in Hbase?

Hey, Block is a single smallest amount / ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 780 views
–1 vote
1 answer

Not able to access hadoop cluster

The issue which you are facing is ...READ MORE

Dec 21, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 780 views
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