Trending questions in Big Data Hadoop

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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 • 497 views
+1 vote
3 answers

when i tried to run the hdfs namenode -format command...its failed to run..can anyone help me with this???

Hi Suriyaprakash, I guess the path for hadoop ...READ MORE

Jul 23, 2018 in Big Data Hadoop by avi_man_utd
 • 11,496 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
 • 65,910 points • 424 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
 • 65,910 points • 691 views
0 votes
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
 • 65,910 points • 627 views
0 votes
1 answer

Sqoop transfer file from MySql to HBase

Sqoop doesn’t permit you to import, all ...READ MORE

Feb 12, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 3,087 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
 • 65,910 points • 522 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
 • 65,910 points • 443 views
0 votes
1 answer

Error creating External Tables in Hive

The path which you have given for ...READ MORE

Feb 9, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 3,061 views
0 votes
1 answer

Hadoop: "Caused by: java.lang.ClassNotFoundException" error

Have you placed the jar files in ...READ MORE

Nov 19, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 6,595 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
 • 69,210 points • 2,515 views
0 votes
1 answer

Error running hadoop mapreduce in Python using Hadoop Streaming

Hi As you write mapper and reducer program  ...READ MORE

Jan 21, 2020 in Big Data Hadoop by anonymous
 • 2,223 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
 • 327 views
+1 vote
2 answers

What does hadoop fs -du command gives as output?

du command is used for to see ...READ MORE

Jul 24, 2019 in Big Data Hadoop by Lokesh Singh
 • 5,511 views
0 votes
1 answer

Hadoop Hive: ClassNotFoundException: org.apache.hive.jdbc.HiveDriver

You have to use the right dependency <dependency> ...READ MORE

Dec 11, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 5,492 views
0 votes
1 answer

Sqoop import: import failed error

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

Feb 12, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 2,809 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
 • 69,210 points • 5,918 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
 • 65,910 points • 507 views
0 votes
1 answer

What is the difference between MapReduce and YARN in Hadoop?

MapReduce: MapReduce is an algorithm used to store ...READ MORE

Dec 19, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 5,083 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 • 1,125 views
0 votes
1 answer

What is the difference between MapRed and MapReduce?

Firstly, we must learn that these are ...READ MORE

Mar 6, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,724 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 • 5,075 views
0 votes
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
 • 2,560 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
 • 69,210 points • 2,208 views
0 votes
1 answer

Copy file from HDFS to the local file system

There are two possible ways to copy ...READ MORE

Mar 27, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 16,498 views
0 votes
2 answers

Hadoop fs -stat command

hadoop fs -stat is as hadoop command used ...READ MORE

Oct 25, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 10,190 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
 • 69,210 points • 5,134 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 • 653 views
0 votes
10 answers

What is the difference between Mongodb and Hadoop?

MongoDB is a NoSQL database, whereas Hadoop is ...READ MORE

Jun 20, 2018 in Big Data Hadoop by jenny_code
 • 11,401 views
0 votes
1 answer

How to copy file to multiple hdfs directory?

You can use loop to copy the ...READ MORE

Jan 25, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 3,283 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
 • 69,210 points • 3,112 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 • 564 views
0 votes
1 answer

Why is HDFS used for the applications with large data sets, and not for the multiple small files?

HDFS is more efficient for a large ...READ MORE

Dec 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,829 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
 • 69,210 points • 5,040 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 • 600 views
0 votes
1 answer

How to find the port on which hdfs is running?

If you are using hadoop 2.7 or ...READ MORE

Jan 25, 2019 in Big Data Hadoop by Omkar
 • 69,210 points • 3,171 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
 • 69,210 points • 1,997 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 • 788 views
0 votes
1 answer

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
 • 69,210 points • 2,889 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
 • 69,210 points • 5,496 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
 • 69,210 points • 4,138 views
+2 votes
1 answer

Hadoop: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable

Add these 2 lines in your code ...READ MORE

Nov 15, 2018 in Big Data Hadoop by Omkar
 • 69,210 points • 6,010 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
 • 69,210 points • 1,969 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
 • 1,832 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
 • 69,210 points • 2,526 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
 • 69,210 points • 4,245 views
0 votes
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 • 3,359 views
0 votes
0 answers

Difference between Name node and Secondary Name node

Explain to me the difference between the ...READ MORE

Mar 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 375 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
 • 69,210 points • 1,824 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
 • 69,210 points • 3,716 views
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