Most voted questions in Big Data Hadoop

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How do you start and stop region server in HBase?

Hey, You can run multiple region servers from ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 2,629 views
0 votes
1 answer

How to kill a Backup Master in HBase?

Hey, To kill a backup master, you need ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,017 views
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1 answer

How to start and stop Master in HBase?

Hello, Using the “local-master-backup.sh” you can start up ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 540 views
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1 answer

Which code do we use to open the connection in HBase?

Hey, To open a connection, following code: Configuartion myconf ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 963 views
0 votes
1 answer

Map-reduce code for finding average salary

You can choose your mapper output key ...READ MORE

May 22, 2019 in Big Data Hadoop by Yogi
 • 3,333 views
0 votes
1 answer

Hive: LOCATION and WITH DBPROPERTIES command in create table command

By default, the Hive database will be ...READ MORE

May 22, 2019 in Big Data Hadoop by Firoz
 • 3,708 views
0 votes
1 answer

OOZIE Connectivity: "Unable to Connect"

You have to run the start command ...READ MORE

May 22, 2019 in Big Data Hadoop by Quil
 • 611 views
0 votes
1 answer

Unable to run Name node and datanode on Single Node cluster: Does not contain a valid host:port

Add the following properties in the core-site.xml file, it ...READ MORE

May 22, 2019 in Big Data Hadoop by Sanam
 • 1,097 views
0 votes
1 answer

Query regarding Temporary table's metadata in HIVE

Registered tables are not cached in memory. ...READ MORE

May 22, 2019 in Big Data Hadoop by Tina
 • 1,137 views
0 votes
1 answer

Sqoop error while trying to connect to MySql

Please use the below command to solve ...READ MORE

May 22, 2019 in Big Data Hadoop by Bhagavath
 • 2,277 views
0 votes
1 answer

Hadoop version problem: System is launching different version of Hadoop

When you run sudo service hadoop-master command, it internally runs ...READ MORE

May 22, 2019 in Big Data Hadoop by Tina
 • 451 views
0 votes
1 answer

Hadoop Namenode start issue

Try restarting the master: $ sudo reboot $ sudo ...READ MORE

May 22, 2019 in Big Data Hadoop by Rishi
 • 591 views
0 votes
1 answer

Should the region server be located on all DataNodes?

Hey, Absolute Yes, because Region server runs on ...READ MORE

May 22, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,396 views
0 votes
1 answer

How will you backup an HBase cluster?

Hey, In 2 ways we can perform HBase ...READ MORE

May 22, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,257 views
0 votes
1 answer

What do you understand by Filters in Hbase?

 Hey, Basically,  by allowing users to add limiting ...READ MORE

May 22, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 647 views
0 votes
1 answer

Hive: Execute MapReduce jobs locally

You can set Hive to run MapReduce ...READ MORE

May 21, 2019 in Big Data Hadoop by Gani
 • 1,292 views
0 votes
1 answer

How many files can hive create in HDFS duringbMapReduce job?

There is a limit on how many ...READ MORE

May 21, 2019 in Big Data Hadoop by Charuni
 • 1,039 views
0 votes
2 answers

Limit the maximum number of dynamic partitions in Hive

if you are already on hive shell ...READ MORE

Jul 23, 2020 in Big Data Hadoop by Shantanu
 • 190 points • 7,344 views
0 votes
1 answer

How to set maximum dynamic partitions in MapReduce mode?

There is a default maximum number of ...READ MORE

May 21, 2019 in Big Data Hadoop by Likith
 • 1,110 views
0 votes
1 answer

Hive: Dynamic partition without using static partition

Hive asks for a static partition as ...READ MORE

May 21, 2019 in Big Data Hadoop by Suman
 • 976 views
0 votes
1 answer

Disable dynamic partition in hive

Dynamic partition is set to true by ...READ MORE

May 21, 2019 in Big Data Hadoop by Vishwa
 • 1,716 views
0 votes
1 answer

Replace Column names and datatype in Hive

You can replace the column name and ...READ MORE

May 21, 2019 in Big Data Hadoop by John
 • 27,426 views
0 votes
1 answer

Can I use pattern matching in Hive?

Yes, it is possible to use pattern ...READ MORE

May 21, 2019 in Big Data Hadoop by Khan
 • 1,198 views
0 votes
1 answer

Hive: Display logs on console

You can emit the logs on the ...READ MORE

May 21, 2019 in Big Data Hadoop by Jishnu
 • 1,655 views
0 votes
1 answer

How to loacte data cell in Hbase?

Hey, Hbase uses the coordinates to locate a ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 456 views
0 votes
1 answer

What are different types of blocks in Hbase?

Hey, Block is a single smallest amount / ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 438 views
0 votes
1 answer

Explain the Data Model operation in Hbase?

Hi, The Data Model operations in Hbase are ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 456 views
0 votes
1 answer

What are the components of Hbase?

Hey, Components of Hbase are as follows: Zookeeper:- It ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 385 views
0 votes
1 answer

What is REST keyword in Hbase?

Hey, REST stands for Representational State transfer, which ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 435 views
0 votes
1 answer

What is the use of ZooKeeper in Hbase?

Hey, The zookeeper is used to maintain the ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 2,631 views
0 votes
1 answer

What is Memstore in Hbase?

Hey, In HBase the the store contains memory ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,442 views
0 votes
1 answer

What are the operational commands of HBase?

Hey, These are the following operational commands: Get- Returns ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,910 points
edited May 21, 2019 by Gitika • 775 views
0 votes
1 answer

How to increase reducers in Hive?

By default, only one reducer is assigned ...READ MORE

May 21, 2019 in Big Data Hadoop by Lohit
 • 2,964 views
0 votes
1 answer

what is Region keyword and and store keyword in Hbase?

Hey, In HBase, tables are split into regions ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 606 views
0 votes
1 answer

Application of Hbase?

Hey, Here are the following applications as follows: HBase is ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,910 points
edited May 20, 2019 by Gitika • 796 views
0 votes
1 answer

Hive: How to compress intermediate jobs?

The option hive.exec.compress.output will only compress the output. To ...READ MORE

May 20, 2019 in Big Data Hadoop by Raman
 • 980 views
0 votes
1 answer

How to compress output of the mapreduce output in Hive?

To compress the output of the MapReduce ...READ MORE

May 20, 2019 in Big Data Hadoop by Hiran
 • 1,011 views
0 votes
1 answer

Hive: Change data format for DDL output

By default, the DDL output is set ...READ MORE

May 20, 2019 in Big Data Hadoop by Karan
 • 1,076 views
0 votes
1 answer

Why HBase is column oriented database?

Hey, Yes, Hbase is known to be a ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 2,449 views
0 votes
1 answer

How to change the Hive table comment?

Yes, it is possible to change the ...READ MORE

May 20, 2019 in Big Data Hadoop by Tina
 • 2,783 views
0 votes
1 answer

How to replace Hive table name?

Yes, it is possible to change the ...READ MORE

May 20, 2019 in Big Data Hadoop by Firoz
 • 797 views
0 votes
1 answer

How to find the default database in Hive?

Yes, you can find out which database ...READ MORE

May 20, 2019 in Big Data Hadoop by Shiro
 • 4,124 views
0 votes
1 answer

Hive: "SET LOCATION" command not changing the location of the database

The SET LOCATION command does not change ...READ MORE

May 20, 2019 in Big Data Hadoop by Yash
 • 3,187 views
0 votes
1 answer

Hive: Dropping a not empty database

This behavior is because Hive by default ...READ MORE

May 20, 2019 in Big Data Hadoop by Rakshit
 • 2,593 views
0 votes
1 answer

How to create a Hive Database and store it in HDFS?

You will have to exclusively mention the ...READ MORE

May 20, 2019 in Big Data Hadoop by Jishnu
 • 2,200 views
0 votes
0 answers

about sequence file in hadoop and mapreduce.everything about it with examples [closed]

May 20, 2019 in Big Data Hadoop by anonymous
closed May 20, 2019 by Omkar • 257 views
0 votes
0 answers

Hello ,how know runing time on single node ,i am enter (local host:8088)but empty display ?

May 19, 2019 in Big Data Hadoop by anonymous
 • 522 views
0 votes
1 answer

How do I create a subquery in hive?

Hey, Hive subquery is a select expression enclosed ...READ MORE

May 17, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 2,558 views
0 votes
0 answers

How to run WebHCat using Hive?

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

May 17, 2019 in Big Data Hadoop by Rishi
 • 475 views
0 votes
1 answer

How to run HCatalog using Hive?

You can run HCatalog using the below ...READ MORE

May 17, 2019 in Big Data Hadoop by Likith
 • 616 views
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