Trending questions in Big Data Hadoop

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How to increase reducers in Hive?

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

May 21, 2019 in Big Data Hadoop by Lohit
 • 4,001 views
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1 answer

Can we use different i/p and o/p format classes in mapreduce code?

Yes, InputFormatClass and OutputFormatClass are independent of ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Jimmy
 • 1,834 views
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1 answer

Hive Connection issue

You are getting the issues probably because ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Karan
 • 2,697 views
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1 answer

How to enable impersonation in HiveServer2?

You have to configure 2 files for ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Reshma
 • 3,385 views
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1 answer

Integration of hbase

For HBase Pig integration, you can refer ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Kiran
 • 1,821 views
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1 answer

Creating testjob in sqoop for incremental load

Yes, it is possible to do so. ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Umar
 • 1,994 views
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1 answer

Command to listing all the tables In HBase?

Hey, list is the command that is used ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 3,839 views
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1 answer

Hive Execution Engine

The default execution engine for Hive is mr. To ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Varun
 • 3,317 views
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1 answer

How to check the information and status of workflow, coordinator or Bundle job or coordinator Action in Oozie?

Hi, You can check this example to see ...READ MORE

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,699 views
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1 answer

Mutliple Output Format in Hadoop

Each reducer uses an OutputFormat to write ...READ MORE

Jul 19, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,341 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 • 5,457 views
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1 answer

Sqoop: Oracle Connection String

The format for connection string for Oracle ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Varun
 • 3,203 views
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1 answer

what is Hive on spark?

Hey, Hive contains significant support for Apache Spark, ...READ MORE

Jul 2, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,101 views
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1 answer

What is the use of setting the name of the job in mapreduce?

Job job = new Job(conf,"job_name") is just used ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Umesh
 • 1,755 views
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1 answer

RDMBS integration with Hadoop

About integrating RDBMS with Hadoop, you can ...READ MORE

Jul 16, 2019 in Big Data Hadoop by Nanda
 • 1,464 views
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1 answer

How does decreasing the block size make more space on Datanode?

When there is space in data nodes ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Krish
 • 1,930 views
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1 answer

Sending hdfs file to a non hadoop cluster

There are different ways to do this. ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tarun
 • 1,733 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
 • 3,885 views
0 votes
0 answers

pattern mapreduce

i need to write some mapreduce pattern ...READ MORE

Jul 23, 2019 in Big Data Hadoop by tiza
 • 1,160 views
0 votes
1 answer

How to add mysql database for Hue Query app?

Hi. To add mysql database in the config, open ...READ MORE

May 27, 2019 in Big Data Hadoop by Vasu
 • 3,583 views
0 votes
1 answer

Hadoop Hive: How to split a single row into multiple rows?

Try this SELECT ID1, Sub FROM tableName lateral view ...READ MORE

Nov 14, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 11,953 views
0 votes
1 answer

Setting Impala host and port in Hue

To set the Impala server details, you ...READ MORE

May 24, 2019 in Big Data Hadoop by Kunal
 • 3,683 views
0 votes
1 answer

Unable to instantiate hive metastore

To resolve this issue, follow the steps ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Ritu
 • 1,868 views
0 votes
1 answer

When and when not to use PigStore?

The Pig storage is not used only ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Rushil
 • 1,645 views
0 votes
1 answer

Code was tested successfully in Dev and Test. When deployed to Productions it is failing. As an admin, how do you track the issue?

Hey, In this case, you can do one ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,398 views
0 votes
1 answer

Error: input path does not exist

Hey, This error looks like your job History ...READ MORE

Apr 30, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,702 views
0 votes
1 answer

How does Hadoop process data which is split across multiple boundaries in an HDFS?

I found some comments: from the Hadoop ...READ MORE

Jul 1, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,033 views
0 votes
1 answer

JDBC to HiveServer2 connection in HTTPS mode with SSL enabled

To connect to HiveServer2 in HTTPS mode ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Firoz
 • 3,196 views
0 votes
1 answer

Configuring JDBC Clients for LDAP Authentication with HiveServer2

JDBC client requires a connection URL as ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Raman
 • 3,233 views
0 votes
1 answer

How to load data from HDFS into pig relation?

Hey, To load data from HDFS to pig ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,395 views
0 votes
1 answer

What will happen if the OOZIE_URL environment variable has not been set?

Hey, If the Oozie_URL environment variable has not ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,294 views
0 votes
1 answer

How to ensure that Oozie has started? Which Command line tool use to check the status of Oozie?

Hey, To get ensure that your Oozie has ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,898 views
0 votes
1 answer

Amazon AWS Web Services

If you want to limit your hadoop ...READ MORE

Jul 8, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,688 views
0 votes
1 answer

What is GraphX in Spark?

Hi, Spark uses GraphX for graph processing to ...READ MORE

Jul 2, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,954 views
0 votes
1 answer

Impala: Add months to current time

You can add the months using the add_months method ...READ MORE

Jun 6, 2019 in Big Data Hadoop by John
 • 3,062 views
0 votes
1 answer

Connection String for MySQL database using Sqoop

The format for the connection string and ...READ MORE

Jun 6, 2019 in Big Data Hadoop by John
 • 3,066 views
0 votes
1 answer

When creating a Hive table how can you specify the table creator name in Hive?

Hey, While creating a table the TBLPROPERTIES clause is used ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,187 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
 • 3,785 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
 • 3,694 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
 • 65,730 points • 3,909 views
0 votes
1 answer

Pig: Does these jar files run in NodeManager to produce result?

Below is what happens with the map-reduce ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Lucy
 • 1,534 views
0 votes
1 answer

What is the process to integrate meta store for hive?

Hi. Here are the steps you can ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Jimmy
 • 2,194 views
0 votes
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Is data sent to some other location to be processed in pig?

With pig, we are not taking data ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Adi
 • 1,524 views
0 votes
1 answer

What is the PostgreSQL connection string for Sqoop?

The format of the connection string is: jdbc:postgresql://<HOST>:<PORT>/<DATABASE_NAME> You ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Kamal
 • 2,993 views
0 votes
1 answer

Merging Files using PIG

In order to merge two or more ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tina
 • 1,559 views
0 votes
1 answer

Where is table data stored in Apache HIve by default?

Hi, yes, you can do it by using  ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,464 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
 • 65,730 points • 3,720 views
+2 votes
1 answer

windows 10 C:\Users\mk>hadoop -version output:- Error: Could not find or load main class P.

Hey, I guess the error you are facing ...READ MORE

May 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,067 views
0 votes
1 answer

How to uninstall all versions of hadoop completely from the system?

Do a: sudo dpkg -l | grep hadoop to ...READ MORE

Oct 29, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 12,488 views
+1 vote
1 answer

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
 • 69,180 points • 11,212 views
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