Most answered questions in Big Data Hadoop

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Why we need to install "ant -Dhadoopversion=23" ? What is the use of this?

Hi, We install ant to build pig, If the ...READ MORE

Apr 26, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 958 views
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1 answer

What are the components in Pig

Hi, Yes, this is absolutely correct that pig ...READ MORE

Apr 26, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,363 views
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Method to schedule the number of Mappers and Reducers in a Hadoop MapReduce Tsk.

The number of Mapper tasks for a ...READ MORE

Apr 25, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,101 views
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1 answer

Can I use Amazon Web Services for free?

If you would like to use AWS ...READ MORE

Apr 25, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,076 views
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1 answer

I have installed Hadoop on Ubuntu but name node is not running.

If you are using Hadoop version-2.7.7, then ...READ MORE

Apr 30, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,433 views
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1 answer

Elastisearch Hadoop

I will redirect you to a repository ...READ MORE

Apr 24, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 944 views
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1 answer

Difference between Hadoop Mapreduce in MongoDB versus MangoDB's built-in MapReduce

Let me line up the crucial differences ...READ MORE

Apr 24, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,299 views
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1 answer

What are the different daemons in yarn?

Hi, The different Daemons in YARN are:- Resources Manager:- Runs ...READ MORE

Apr 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 5,730 views
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1 answer

Hey ,I am install Hadoop and on single node and run on one file in HDFS, but I want to run more of file I work upload files but I know to running all

If you are talking about running multiple ...READ MORE

Apr 22, 2019 in Big Data Hadoop by Tina
 • 1,464 views
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1 answer

Hey I am install Hadoop on single node and run program that file size is 3.2 GB and the time is 25 mins، Is this true or get less time. Thanks

Not sure what exactly you mean by ...READ MORE

Apr 22, 2019 in Big Data Hadoop by Shaam
 • 1,638 views
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1 answer

How to insert data inside the database in Linux?

First you need to create a table ...READ MORE

Apr 16, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,090 views
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How to create table inside database in MySql in Linux?

We can use this command to create ...READ MORE

Apr 16, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,235 views
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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 • 895 views
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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 • 986 views
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error: Access denied for user 'sample'@'localhost'.

This kind of error occurs when we ...READ MORE

Apr 15, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,340 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
 • 65,730 points • 1,219 views
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Command to establish connection between MySql with linux?

This is the command you can use ...READ MORE

Apr 15, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 18, 2019 by Gitika • 1,378 views
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1 answer

How can Hadoop process the records that are split across the block boundaries?

First of all, Map Reduce algorithm is not programmed ...READ MORE

Apr 15, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,388 views
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1 answer

What command is used to install MySql in centos?

You can use this command to install ...READ MORE

Apr 12, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,310 views
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1 answer

I am install hadoop on signal node and run program but delay time if have dataset size 3.3 GB take time about 2 hours

Hey @Faris! Try increasing the number of reducers. ...READ MORE

Apr 12, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 1,841 views
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1 answer

Explain to me the difference between HBase and HDFS.

Hadoop generally consists of three major components: HDFS It ...READ MORE

Apr 12, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 3,097 views
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Explain to me to run Spark without Hadoop

Spark is capable to Perform in three ...READ MORE

Apr 12, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 3,050 views
0 votes
1 answer

Why we use 'help' command in Hadoop Sqoop?

Hi, The command sqoop help lists the tools ...READ MORE

Feb 4, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,205 views
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1 answer

What is Kafka? what is its importance in Big-Data?

Apache Kafka is a tool used in ...READ MORE

Apr 11, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,036 views
0 votes
1 answer

What is the difference in DistCP command and Sqoop command in Hadoop?

Both the distCP (Distributed copy in Hadoop) ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,995 views
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1 answer

Why sqoop internally generates MapRed code?

By default Sqoop always create 4 Map ...READ MORE

Apr 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,785 views
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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 • 1,266 views
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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 • 1,161 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 • 932 views
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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 • 1,248 views
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What is the main purpose of HDFS fsck command?

HDFS fsck is used to check the ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 12, 2019 by Gitika • 15,427 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 • 1,260 views
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1 answer

Why do we need Hadoop framework?

The function of Distributes File System is ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 12, 2019 by Gitika • 1,821 views
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1 answer

What is the role of Job tracker Hadoop?

Job tracker's function is resource management, tracking ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 6,280 views
0 votes
1 answer

Difference between Cluster and nodes?

In Hadoop distributed system, Node is a single ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 14,250 views
0 votes
1 answer

How to import Flat files in Hadoop using sqoop?

Sqoop is a tool which we use ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,290 views
0 votes
1 answer

File formats in Hadoop?

File format is just a way to ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 12, 2019 by Gitika • 1,524 views
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1 answer

How do you handle the failure of Data node?

HDFS has Master Slave architecture in which Master ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 9, 2019 by Gitika • 8,951 views
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Namespace in HDFS?

Basically when we say Namespace we mean ...READ MORE

Apr 8, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 12,753 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 • 1,331 views
+1 vote
1 answer

what are the typicall block sizes in HDFS

HDFS is a block structured file system ...READ MORE

Apr 8, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,133 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 • 889 views
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1 answer

How data distribution is done in Hadoop?

To understand how or what are the process ...READ MORE

Apr 4, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,370 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 • 1,054 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 • 1,397 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 • 1,221 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 • 1,529 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 • 2,085 views
0 votes
1 answer

Unable to run import script using sqoop

You are writing incorrect command. Please write ...READ MORE

Mar 8, 2019 in Big Data Hadoop by Raj
 • 1,088 views
0 votes
1 answer

Whenever I try to start the yarn daemon. ./start-dfs.sh it says access denied I have even tried changing the file permissions but it didn't work.

Seems like the ssh is not properly ...READ MORE

Mar 8, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 5,508 views
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