Most viewed questions in Big Data Hadoop

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What was Hadoop named after?

Nov 25, 2021 in Big Data Hadoop by Edureka
 • 12,690 points • 764 views
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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
 • 65,770 points • 764 views
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Why CLI is used in Scoop?

CLI is Command Line Client which is ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 764 views
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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 • 763 views
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Hive Query: Split value

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

Jul 25, 2019 in Big Data Hadoop by Paul
 • 763 views
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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
 • 763 views
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Hive ACID semantics

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

Jan 4, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 763 views
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1 answer

What is REST keyword in Hbase?

Hey, REST stands for Representational State transfer, which ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 762 views
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Delimiter on the data

You can use this: import org.apache.spark.sql.functions.struct val df = ...READ MORE

Jul 25, 2019 in Big Data Hadoop by Vinay
 • 761 views
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1 answer

What is the syntax for HiveQL SELECT Statement?

Hey,  You can use this  syntax below: SELECT [ALL ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 760 views
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User admin configuration in Hue

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

May 27, 2019 in Big Data Hadoop by Rishi
 • 760 views
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Extracting pig log messages

You can use the following commands in ...READ MORE

Jan 7, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 758 views
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Hadoop tools/eco-system version compatibility doubt

Below are the versions which can be used ...READ MORE

Jan 31, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 754 views
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Can someone help with Hadoop installation Setup on Ubuntu?

I have understood your query, I have ...READ MORE

May 15, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 753 views
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Hadoop Hive Bucketing

Partition helps in increasing the efficiency when ...READ MORE

Dec 14, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 752 views
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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 • 750 views
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Command use to kill the job in MapReduce.

Hi, The command you can use to kill ...READ MORE

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 750 views
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How to export all collections in MongoDB?

Hi Team, I have one database in MongoDB. ...READ MORE

Dec 17, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 748 views
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1 answer

CDH: Permission for Hbase user for Hbase key.

You can grant the permission for Hbase ...READ MORE

May 31, 2019 in Big Data Hadoop by Tina
 • 748 views
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1 answer

RDMBS integration with Hadoop

About integrating RDBMS with Hadoop, you can ...READ MORE

Jul 16, 2019 in Big Data Hadoop by Nanda
 • 746 views
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Can anyone help me out to install the following packages R-MR, R-HDFS, and R-HBase on R-HAdoop?

I have understood your problem, I will ...READ MORE

May 31, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 745 views
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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
 • 745 views
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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
 • 744 views
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Create hive table with location.

Hi@MD, We can also create a hive table ...READ MORE

Oct 16, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 742 views
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1 answer

How to install WebHCat Rest server on Centos?

Open the terminal and run the following ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Harry
 • 741 views
–1 vote
1 answer

How to start pyspark?

Follow these steps: First start hadoop daemons: cd $HADOOP_HOME/sbin ./start-all.sh Now ...READ MORE

Jan 3, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 741 views
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1 answer

HDFS for customer information file

No, because HDFS is optimized for write-once, ...READ MORE

Jul 31, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 741 views
0 votes
1 answer

SQOOP Import command failure

Try this command where the student table ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Suri
 • 740 views
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1 answer

Pig CLI mode

Pig can be used in two modes: 1) ...READ MORE

Jan 4, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 740 views
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1 answer

Produce compressed data from map reduce

 It is straight forward and you can achieve ...READ MORE

Jul 24, 2019 in Big Data Hadoop by John
 • 737 views
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1 answer

Difference between Pig and Hive? Why have both? [closed]

The hive was designed to appeal to ...READ MORE

Nov 20, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 736 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 • 735 views
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1 answer

Relation between LOAD operation and LOCAL keyword?

Hey, The Load operation is used to move the ...READ MORE

May 15, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 734 views
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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 • 734 views
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1 answer

What is work flow application consists of in Oozie?

Hi, A workflow application consists of the workflow ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 731 views
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1 answer

Explain to me the method to transfer data between Azure tables and Hadoop on Azure

this article on HiveStorageHandler will let you create ...READ MORE

May 3, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 731 views
0 votes
1 answer

Hadoop PIG extraction shows no output

To see whether the extraction was done ...READ MORE

Dec 13, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 731 views
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1 answer

Sentry configuration file in hue

Hue looks for the sentry configuration file ...READ MORE

May 30, 2019 in Big Data Hadoop by Yogi
 • 730 views
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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 • 729 views
0 votes
1 answer

How to confirm if Hue plugins are properly set?

You can confirm it like this: $ tail ...READ MORE

May 24, 2019 in Big Data Hadoop by Shirish
 • 726 views
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1 answer

Hadoop combiners with aggregator functions

Both combiner & aggregator fulfill partly the ...READ MORE

May 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 725 views
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1 answer

Relationship between Hadoop and Database

HDFS is a software framework designed for ...READ MORE

Jul 4, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 722 views
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1 answer

How Big is Big data?

First question which strikes that how BIG ...READ MORE

Apr 4, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 722 views
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1 answer

Sqoop: Use HBase table instead of HDFS

To override the default and import data ...READ MORE

May 16, 2019 in Big Data Hadoop by Rajini
 • 720 views
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1 answer

How to start working with scala?

Scala can be installed on any UNIX ...READ MORE

Nov 16, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 719 views
0 votes
1 answer

Why we use Relation keyword in pig?

Hey, In pig, Relation represents a complete database. ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 718 views
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1 answer

How to create an objects using a keyword new?

Example import java.io._ class Point(val xc: Int, val yc: ...READ MORE

Nov 17, 2020 in Big Data Hadoop by Gitika
 • 65,770 points • 717 views
+1 vote
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Directory not found while using java -classpath

I'm using command java -classpath  ${HADOOP_CLASSPATH} -d '/home/shravanth/Desktop/wordcount/classes' ...READ MORE

Sep 14, 2019 in Big Data Hadoop by shravanth
 • 717 views
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1 answer

Explain the Data Model operation in Hbase?

Hi, The Data Model operations in Hbase are ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 717 views
–1 vote
1 answer

Is standby node missing in Hadoop 1.0?

Yes, Hadoop 1.0 didn't have standby namenode. ...READ MORE

Dec 21, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 717 views
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