Trending questions in Big Data Hadoop

0 votes
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
 • 1,262 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
 • 65,770 points • 737 views
0 votes
1 answer

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
 • 65,770 points • 985 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
 • 69,220 points • 3,412 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
 • 69,220 points • 7,005 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
 • 65,770 points • 866 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
 • 69,220 points • 6,005 views
0 votes
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
 • 65,770 points • 583 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
 • 65,770 points • 753 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
 • 65,770 points • 850 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
 • 69,220 points • 3,345 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
 • 69,220 points • 3,252 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
 • 12,099 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 • 17,103 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
 • 65,770 points • 679 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 • 5,588 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
 • 69,220 points • 2,848 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
 • 69,220 points • 3,949 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
 • 5,861 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
 • 2,546 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
 • 3,069 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
 • 69,220 points • 5,487 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
 • 69,220 points • 6,284 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 • 1,529 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 • 2,068 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 • 5,425 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
 • 69,220 points • 3,804 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
 • 448 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
 • 69,220 points • 3,512 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
 • 65,770 points • 649 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
 • 69,220 points • 3,357 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
 • 69,220 points • 5,390 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
 • 69,220 points • 6,559 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 • 934 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
 • 69,220 points • 5,387 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
 • 69,220 points • 2,360 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 • 3,926 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
 • 69,220 points • 4,597 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
 • 69,220 points • 5,908 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 • 865 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 • 784 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 • 1,072 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
 • 2,208 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
 • 69,220 points • 4,652 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
 • 69,220 points • 2,231 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
 • 69,220 points • 4,157 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
 • 69,220 points • 5,827 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
 • 69,220 points • 4,995 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 • 13,064 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
 • 69,220 points • 2,186 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.