Trending questions in Big Data Hadoop

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Getting error while loading data into hive table

In the command you have used, the ...READ MORE

Jan 31, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,643 views
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1 answer

How Sqoop import command works internally?

First when client execute Sqoop import commands through ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,592 views
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1 answer

What can you do with sqoop in Hadoop ecosystem?

Scoop came into scenario because there were tools ...READ MORE

Apr 8, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 8, 2019 by Gitika • 1,701 views
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What are the different hdfs dfs commands to perform copy operation?

The different hdfs dfs commands to perform ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,652 views
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1 answer

Copy a table in HBase

Directly its not possible as in case ...READ MORE

Feb 14, 2019 in Big Data Hadoop by Loki
 • 4,015 views
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1 answer

what command to see list inside your Database in linux?

Command used to list up what is inside ...READ MORE

Apr 16, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,371 views
0 votes
1 answer

Unable to move Hadoop Hive tables from Source to Destination.

First, check the permissions of HDFS Directory ...READ MORE

Dec 1, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 7,218 views
+1 vote
1 answer

How can I get the Hadoop Documentation for its particular version?

Hi, You can download all the versions you ...READ MORE

Mar 19, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,463 views
0 votes
1 answer

How to create database in Mysql?

The command you can use is: create table ...READ MORE

Apr 15, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,328 views
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2 answers

Do we need to format datanode to store data

That was not important. If you can ...READ MORE

Jan 16, 2019 in Big Data Hadoop by Sam
 • 160 points • 5,187 views
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0 answers

What are Hadoop daemons? What are their live examples?

First of all why Hadoop daemon are ...READ MORE

Apr 4, 2019 in Big Data Hadoop by rashmi
 • 1,829 views
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1 answer

What are the site-specific configuration files in Hadoop?

There are different site specific configuration to ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,564 views
0 votes
1 answer

What are the different connectors of sqoop?

Sqoop is a tool to transfer the ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,470 views
+1 vote
1 answer

What is the process to perform an incremental data load in Sqoop?

The process to perform incremental data load ...READ MORE

Dec 17, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 6,364 views
0 votes
1 answer

How to install Scala on Centos?

Maybe you don't have the install point ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 3,501 views
0 votes
1 answer

Why CLI is used in Scoop?

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

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,224 views
0 votes
1 answer

What is the difference between Writable & WritableComparable in Hadoop?

Writable in an interface in Hadoop and types ...READ MORE

Oct 3, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 9,411 views
0 votes
1 answer

Differentiate between Hive internal tables an external tables.

Hive comprises of an RDBMS(Relational-Database-Management-Systems) on its ...READ MORE

Mar 27, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,824 views
–1 vote
1 answer

Incremental append in Sqoop

You are right. As Hadoop follows WORM ...READ MORE

Dec 31, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 5,564 views
0 votes
0 answers

How to import Flat files in Hadoop using sqoop?

It is possible to import data between ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,278 views
0 votes
1 answer

What is the difference between Map-side join and Reduce-side join?

Join is a clause that combines the records ...READ MORE

Dec 13, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,281 views
0 votes
1 answer

How to create a managed table in Hive?

You can use this command: create table employee(Name ...READ MORE

Dec 14, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,215 views
0 votes
1 answer

java.lang.NoSuchMethodError: org.apache.hadoop.fs.FSOutputSummer

Seems like you have not set the ...READ MORE

Jan 29, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,259 views
0 votes
1 answer

How to create a Hive table from sequence file stored in HDFS?

There are two SerDe for SequenceFile as ...READ MORE

Dec 18, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,012 views
–1 vote
1 answer

How to uninstall and install mysql-server in centos?

Please find below the command to uninstall ...READ MORE

Dec 27, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 5,607 views
0 votes
1 answer

How to run Hadoop in Docker containers?

Hi, You can run Hadoop in Docker container. Follow ...READ MORE

Jan 24, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,250 views
0 votes
1 answer

How to find the number of blocks a hdfs file is divided into?

Yes. you can use the hadoop fsck command to do ...READ MORE

Nov 30, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,719 views
0 votes
1 answer

Different Hadoop Modes

Hadoop can run in 3 different modes. 1. ...READ MORE

Jun 13, 2018 in Big Data Hadoop by shams
 • 3,670 points • 14,030 views
–1 vote
1 answer

Unable to execute the jar file wordcount.

I see that the command that you ...READ MORE

Jan 21, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,442 views
+1 vote
1 answer

Explain to me the difference between HBase and HDFS

Let's start from scratch. Hadoop basically consists of three ...READ MORE

Mar 19, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,894 views
0 votes
0 answers

hey,can you help me

I am install hadoop and runing program ...READ MORE

Apr 11, 2019 in Big Data Hadoop by faris
 • 984 views
0 votes
1 answer

Query regarding String and Varchar in Hive

Varchar datatype is also saved internally as ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 3,137 views
0 votes
1 answer

How to run MapReduce program?

Eclipse is already installed in the Edureka ...READ MORE

Feb 22, 2019 in Big Data Hadoop by Suman
 • 3,034 views
0 votes
1 answer

How to delete a file from Hadoop hdfs using java?

Try this: FileSystem fs = FileSystem.get(getConf()); fs.delete(new ...READ MORE

Nov 28, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,701 views
0 votes
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
 • 65,730 points • 1,204 views
0 votes
1 answer

How to use load data local infile command?

This command should be executed in MySQL ...READ MORE

Feb 4, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 3,740 views
0 votes
1 answer

How is kafka used in big-data?

I can brief you the answer here ...READ MORE

Mar 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,585 views
0 votes
1 answer

Zookeeper Quorum value: zookeeper.ClientCnxn: Client session timed out

Enter the below command on the Web ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 2,970 views
–1 vote
1 answer

Pig command error: Failed to parse: Pig script failed to parse

There's a typo in your command: Right command: custdata ...READ MORE

Jan 7, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,953 views
0 votes
1 answer

hadoop: command not found

The reason you are getting hadoop as ...READ MORE

Mar 28, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 17,236 views
0 votes
1 answer

Installing Spark on Windows

Follow the below steps to install Spark ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 2,958 views
0 votes
1 answer

How does a name-node understand by itself that it is facing a failure?

ZooKeeper-Failover-Controller or in short ZKFC is the ...READ MORE

Mar 27, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,397 views
0 votes
1 answer

Path to hiverc file

The hiverc file is not created by ...READ MORE

Feb 14, 2019 in Big Data Hadoop by Jishan
 • 3,185 views
–1 vote
1 answer

Json and snappy compression

The issue you're facing arises because the ...READ MORE

Jan 11, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,653 views
0 votes
1 answer

Speculative Execution in Hadoop

In Hadoop, Speculative Execution is a process ...READ MORE

Aug 28, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 10,464 views
0 votes
1 answer

Hadoop: Error: Could not find or load main class com.sun.tools.javac.Main

It looks like the path is not ...READ MORE

Nov 30, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 6,401 views
0 votes
1 answer

Hadoop installation on Ubuntu.

I have the perfect solution for you, ...READ MORE

Mar 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,052 views
0 votes
1 answer

Hadoop: Format namenode gives error: Shutting down NameNode at java.net.UnknownHostException

UnknownHostException is thrown when hadoop tries to resolve ...READ MORE

Nov 12, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 7,011 views
0 votes
1 answer

How to load multiple tables in Sqoop?

U can use " import-all-tables " option ...READ MORE

Feb 18, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 2,732 views
0 votes
1 answer

How to install Hadoop in Ubuntu?

Hey. Follow these steps to install hadoop. First ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 2,662 views
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