Most viewed questions in Big Data Hadoop

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Determining number of reduces?

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

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
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992 views
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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
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edited May 8, 2019 by Gitika 991 views
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datanode decomissioning

You have set the replication factor to ...READ MORE

Nov 28, 2019 in Big Data Hadoop by Rahul
990 views
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1 answer
0 votes
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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
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988 views
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1 answer

Channel in Flume

 A transient store that receives the events ...READ MORE

Jul 17, 2018 in Big Data Hadoop by Ashish
• 2,650 points
987 views
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1 answer

Error: Unable to instantiate

Hi,  There is a possibility that because of ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
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986 views
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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
985 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
985 views
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1 answer

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
985 views
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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
984 views
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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
984 views
0 votes
1 answer

Switch to old oozie editor in Hue.

CDH 5.4 onwards uses the new editor ...READ MORE

May 27, 2019 in Big Data Hadoop by Rahul
983 views
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1 answer

What is Oozie Hive submit command?

Hi, You can use this example : oozie hive ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
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982 views
0 votes
1 answer

Merging Files using PIG

In order to merge two or more ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tina
981 views
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Query regarding sqoop job

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

May 23, 2019 in Big Data Hadoop by Imran
980 views
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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
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978 views
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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
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977 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
• 69,180 points
977 views
0 votes
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
977 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
974 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
• 65,730 points
974 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
• 65,730 points
971 views
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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
969 views
0 votes
1 answer

How to set rep to particular user in hdfs?

HDFS does not allocate capacity separately based ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Leena
969 views
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1 answer

How to set HBase configuration file to set the heap to 4 GB ?

Hey, The following lines in the hbase-env.sh file shows how ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
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969 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
968 views
0 votes
1 answer

Hive ACID semantics

ACID stands for Atomicity, Consistency, Isolation, and Durability.  Until ...READ MORE

Jan 4, 2019 in Big Data Hadoop by Omkar
• 69,180 points
968 views
0 votes
1 answer

Is data sent to some other location to be processed in pig?

With pig, we are not taking data ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Adi
966 views
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0 answers

Hive data load error

I have table in hive with below ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Rishi
966 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
966 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
966 views
0 votes
1 answer

What happend while formatting hadoop namenode?

Basically, NameNode is the master daemon that ...READ MORE

May 4, 2018 in Big Data Hadoop by Ashish
• 2,650 points
965 views
0 votes
1 answer

How to assign server access to client(s) through NFS export file?

Hi, You can create the export folder, you will ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
• 65,730 points
964 views
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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
964 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
• 65,730 points
963 views
0 votes
1 answer

Execute the Pig script in Local mode.

Hi@akhtar, You can write an entire Pig Latin ...READ MORE

Oct 14, 2020 in Big Data Hadoop by MD
• 95,460 points
963 views
0 votes
1 answer

"Write successful" message from Data node to Name Node

What happens is namenode on the basis ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Quill
961 views
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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
• 65,730 points
960 views
0 votes
1 answer

HDFS usage for small files

Well, the HDFS works more reliably with ...READ MORE

Jun 12, 2018 in Big Data Hadoop by BigData_is_my_ex
960 views
0 votes
1 answer

what is big data concept

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

Feb 1, 2022 in Big Data Hadoop by CoolCoder
• 4,420 points
958 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
957 views
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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
957 views
0 votes
1 answer

Does Caching stand as the only advantage in Spark compared to Hadoop?

Spark has much lower per job and ...READ MORE

Jul 31, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
955 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
953 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
• 65,730 points
952 views
0 votes
1 answer

Pig: Does these jar files run in NodeManager to produce result?

Below is what happens with the map-reduce ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Lucy
951 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
950 views
0 votes
1 answer

Unable to find Java and eclipse installation on my webconsole.

You can either install java and eclipse ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Isha
950 views