Trending questions in Big Data Hadoop

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How to configure the Hadoop cluster with proxyuser for the Oozie process?

Hey, The following two properties are required in ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,173 views
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1 answer

What is control flow Nodes defines in Oozie?

Hello, Control flow nodes define the beginning and ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,166 views
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Hive data load error

I have table in hive with below ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Rishi
 • 821 views
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Use cases of Apache Oozie?

Hi, Apache Oozie is used by Hadoop system ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,116 views
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In Which cluster(Dev or Prod) we test the job?

Well, that depends on what a particular ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Raj
 • 742 views
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1 answer

How to connect to HiveServer2 in HTTPS mode?

The connection URL to connect to HiveServer2 ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Rachit
 • 1,427 views
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1 answer

Explain what is WebDAV in Hadoop?

Hey, To support editing and updating files WebDAV ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,158 views
+1 vote
1 answer

Why do we use STORE command in pig?

Hey, We use store command to store the ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,568 views
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Explain what is a sequence file in Hadoop?

Hello, To store binary key/value pairs, sequence file ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,142 views
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1 answer

Query regarding Parquet File type conversion

Suppose I have the below parquet file ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Stuart
 • 696 views
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1 answer

Regarding unstructured data handling

There are multiple ways to import unstructured ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Ranjitha
 • 723 views
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1 answer

Hive: external table without URI scheme

Yes, it is possible to create an ...READ MORE

May 31, 2019 in Big Data Hadoop by Daniel
 • 1,533 views
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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
 • 65,770 points • 2,001 views
+1 vote
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Hadoop: "DEPRECATED: Use of this script to execute hdfs command is deprecated." error

The use of dfs in your command is "Deprecated". ...READ MORE

Nov 26, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 9,521 views
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Why is it necessary to rename the zoo_sample.cfg with zoo.cfg in zookeeper?

Hey, The main reason why we need to ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,679 views
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1 answer

Enabling LDAP authentication for HiveServer2 using OpenLdAP

To enable LDAP authentication using OpenLDAP, include ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Tina
 • 1,371 views
0 votes
1 answer

Is StandBy NameNode a daemon?

StandBy NameNode is not a separate daemon. ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Raman
 • 666 views
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2 answers

Explain to me the concept of HUE.

Definition: HUE is an open-source SQL Cloud Editor, ...READ MORE

May 16, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,845 views
0 votes
1 answer

How to enable impersonation in Hue for Impala?

In the Hue configuration file, search for ...READ MORE

May 24, 2019 in Big Data Hadoop by Jimmy
 • 1,778 views
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1 answer

Differentiate between FileSink and FileRollSink

Hey, The major difference between HDFS FileSink and ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 644 views
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1 answer

Mention what is the Hadoop MapReduce APIs contract for a key and value class?

Hey, For a key and value class, there ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,024 views
0 votes
1 answer

Hive Server 2 configuration for Kerberos Secured Cluster

Hi @Rasheed. You are right, to enable ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Esha
 • 1,324 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
 • 69,220 points • 5,077 views
0 votes
1 answer

How to set Resource Manager in Hue?

To set the Resource Manager host, open ...READ MORE

May 29, 2019 in Big Data Hadoop by Esha
 • 1,517 views
0 votes
1 answer

Mention Job Flow parameter in Oozie?

Hey, You can use this job flow parameter ...READ MORE

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 697 views
0 votes
1 answer

Is there any hdfs dfs command to restrict number of files to be created in a directory ?

Not sure about the command but you ...READ MORE

May 6, 2019 in Big Data Hadoop by Shri
 • 2,560 views
0 votes
1 answer

Using Microsoft SQL Server for Sqoop

To use Microsoft SQL Server for Sqoop, ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Ramay
 • 1,160 views
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1 answer

Can some one help me resolve this warning? It says "Unable to load Native-Hadoop library to your platform"

I understood the issue. I have faced ...READ MORE

Jun 6, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,159 views
0 votes
1 answer

Access Hive Server with JDBC clients

To access Hive Server using JDBC client, ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Raghu
 • 1,241 views
0 votes
1 answer

Mention how many InputSplits is made by a Hadoop Framework?

Hey, Hadoop will make 5 splits 1 split for ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 963 views
0 votes
1 answer

Configure Oozie to use PostgreSQL

To configure Oozie to use PostgreSQL, add ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Rajan
 • 1,220 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
 • 65,770 points • 1,786 views
0 votes
1 answer

Remove attribute from a column in HBase

To remove the attribute from a column, ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Firoz
 • 1,192 views
0 votes
0 answers

How to execute job In Oozie?

Can anyone suggest which command to use ...READ MORE

Jun 17, 2019 in Big Data Hadoop by rena
 • 660 views
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1 answer

Command use to kill the job in MapReduce.

Hi, The command you can use to kill ...READ MORE

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 757 views
0 votes
1 answer

How do I run Hadoop with Docker for both DEV and PROD environments?

Your requirements show that you are using ...READ MORE

May 30, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,401 views
0 votes
1 answer

Not able to create database in HIVE

The namenode is in safemode which is ...READ MORE

May 24, 2019 in Big Data Hadoop by Sunny
 • 1,654 views
0 votes
1 answer

Hadoop Hive: How to insert data in Hive table?

First, copy data into HDFS. Then create ...READ MORE

Nov 12, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 9,981 views
0 votes
1 answer

How to install HBase on Linux?

To install Hbase, you first need the ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Tanisha
 • 5,344 views
0 votes
2 answers

Using PHP to get all file names in a folder stored in HDFS

So i found a workaround for the ...READ MORE

Mar 13, 2019 in Big Data Hadoop by Bhavish
 • 370 points
edited Mar 13, 2019 by Omkar • 4,776 views
0 votes
1 answer

How to Change the maximum number of cells of a column family?

Hey, Given below is the syntax to change ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,605 views
0 votes
0 answers

Command to initiate MapReduce which provide decent UI?

I am new to MapReduce and want ...READ MORE

Jun 14, 2019 in Big Data Hadoop by Rachna
 • 734 views
+1 vote
1 answer

Explain to me the difference between Name node and Secondary name node

First of all, let understand what is ...READ MORE

May 15, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,971 views
0 votes
1 answer

How to configure Oozie to use Oracle?

You have to mention the following properties ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Rishi
 • 1,026 views
0 votes
1 answer

How to install Zookeeper in Ubuntu?

There are two ways to install Zookeeper: You ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 5,590 views
0 votes
1 answer

How we can configure multiple size for the buckets in HBase?

Hey, To, configurable multiple bucket sizes, configure the ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,255 views
0 votes
1 answer

Explain what does the conf.setMapper Class do?

Hi, Conf.setMapperclass  sets the mapper class and all ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 825 views
0 votes
1 answer

Can anyone help me with the installation and configuration procedures of Hadoop Multi-Node Cluster?

If you are ready to switch to ...READ MORE

May 28, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,385 views
0 votes
1 answer

What is work flow application consists of in Oozie?

Hi, A workflow application consists of the workflow ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 740 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
 • 65,770 points • 1,642 views
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