Most viewed questions in Big Data Hadoop

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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
 • 65,910 points • 500 views
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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 • 500 views
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Files for Configuring HDFS in Hadoop 2.2.0?

By default these Hadoop configuration files are ...READ MORE

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 500 views
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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
 • 65,910 points • 499 views
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How to write examples to test whether the installation is validated or not?

You have some example jars in your ...READ MORE

Sep 5, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 499 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 • 498 views
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Setting user limit for Hbase?

Hey, Because HBase is a database, it opens ...READ MORE

May 29, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 498 views
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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
 • 65,910 points • 498 views
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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
 • 497 views
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Error: Unable to instantiate

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

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 496 views
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Create accumulo table using sqoop

Yes, you can create the missing table ...READ MORE

May 16, 2019 in Big Data Hadoop by Shalini
 • 496 views
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"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
 • 495 views
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Which MySql command will generate all the list of command for MySql prompt?

The command is very simple, you have ...READ MORE

Apr 15, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 494 views
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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
 • 69,210 points • 494 views
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Where can I find older versions of Hadoop?

You can check here. From the archives. In particular, ...READ MORE

Sep 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 492 views
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Error while accessing the file outformat method SetOutputpath

You have imported org.apache.hadoop.mapred.FileOutputFormat, ​​you need to import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat So, make ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 491 views
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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
 • 490 views
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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
 • 95,440 points • 490 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
 • 69,210 points • 490 views
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Sqoop exclude tables

How to exclude tables in sqoop if ...READ MORE

Jul 25, 2019 in Big Data Hadoop by Will
 • 488 views
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Hadoop on cassandra database

Regarding your question - there is a ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 488 views
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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
 • 486 views
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what is pig in big data?

Pig is a high-level programming language for ...READ MORE

Jan 7, 2022 in Big Data Hadoop by Edureka
 • 12,690 points • 485 views
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How to import scala packages?

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

Nov 16, 2020 in Big Data Hadoop by Gitika
 • 65,910 points • 485 views
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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
 • 485 views
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1 answer

Explain what does the conf.setMapper Class do?

Hi, Conf.setMapperclass  sets the mapper class and all ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 484 views
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1 answer

Mapreduce shuffle and sort

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

Dec 27, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 483 views
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1 answer

How to enable LDAP authenticaition in Hue?

You can enable LDAP authentication with HiveServer2 by ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Bhavan
 • 481 views
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RDMBS integration with Hadoop

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

Jul 16, 2019 in Big Data Hadoop by Nanda
 • 479 views
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Sqoop set path for compiled objects

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

May 17, 2019 in Big Data Hadoop by Kunal
 • 479 views
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1 answer

What is HDFS?

HDFS is a distributed file system that ...READ MORE

Dec 24, 2021 in Big Data Hadoop by Kavya
 • 700 points • 477 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 • 476 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
 • 65,910 points • 475 views
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How to embed HDFS cluster information on a website?

Hi @Bhavish.  It is possible to get cluster ...READ MORE

May 27, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 475 views
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1 answer

MapFile in Pig

MapFile is a class which serves file-based ...READ MORE

Jul 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 475 views
–1 vote
1 answer

Not able to execute mapreduce code

Follow the below steps to execute the ...READ MORE

Jan 7, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 474 views
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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
 • 473 views
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Can I install and work with Hadoop on Amazon Web Services with a free trial?

Even I faced the same issue but ...READ MORE

May 10, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 473 views
0 votes
1 answer

Install Hadoop On Ubuntu

I guess it should be at /hadoop/hadoop-common-project/hadoop-common/sr ...READ MORE

Jul 8, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 472 views
–1 vote
1 answer

Hdfs command to see available free space in hdfs

Yes, you check the free space using ...READ MORE

Jan 22, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 472 views
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How to run WebHCat using Hive?

How can I run WebHCat using hive ...READ MORE

May 17, 2019 in Big Data Hadoop by Rishi
 • 471 views
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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
 • 471 views
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Getting error in Custom Input Format

Use this property directly to delimit the ...READ MORE

Apr 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 471 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
 • 470 views
–1 vote
1 answer

Issue with MySql Server connection

Try to restart the mysqld server and then login: sudo ...READ MORE

Jan 2, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 470 views
0 votes
1 answer

Hue filter to search users

You have to specify the filter to ...READ MORE

May 28, 2019 in Big Data Hadoop by Kishan
 • 469 views
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1 answer

Drop a table in Hive.

Hi@akhtar, When you drop a table from Hive ...READ MORE

Oct 19, 2020 in Big Data Hadoop by MD
 • 95,440 points • 468 views
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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
 • 468 views
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1 answer

How to install Hadoop in Ubuntu?

Follow the steps as mentioned in the ...READ MORE

May 17, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 467 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
 • 463 views
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