Trending questions in Big Data Hadoop

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Joining Multiple Spark Dataframes

You can run the below code to ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Bharani
• 4,550 points
583 views
0 votes
1 answer

Hadoop: TaskTracker and JobTracker don't start with start-dfs.sh

You must run the start-dfs..sh too. So when ...READ MORE

Apr 3, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
214 views
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What is Hue?

As you said, Hue is a web ...READ MORE

Mar 22, 2018 in Big Data Hadoop by Ashish
• 2,630 points

edited Mar 22, 2018 by Ashish 701 views
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How to get started with Hadoop and do some development using Eclipse IDE?

Alright, there are couple of things that ...READ MORE

Apr 4, 2018 in Big Data Hadoop by Ashish
• 2,630 points
125 views
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which one to choose for log analysis?

It is not about that you can ...READ MORE

Apr 6, 2018 in Big Data Hadoop by nitinrawat895
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38 views
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Hadoop vs Data Lake

A data lake is a storage repository that holds ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,630 points
502 views
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What Distributed Cache is actually used for in Hadoop?

Basically distributed cache allows you to cache ...READ MORE

Apr 2, 2018 in Big Data Hadoop by Ashish
• 2,630 points
190 views
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1 answer

How to install and configure a multi-node Hadoop cluster?

I would recommend you to install Cent ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,300 points
691 views
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1 answer

When hadoop-env.sh will be executed in hadoop

Yes you need to put in the ...READ MORE

Apr 3, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
108 views
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Avro - Getting Started

Refer to the example given here. It's ...READ MORE

Apr 4, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
48 views
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Error running hadoop mapreduce in Python using Hadoop Streaming

I was trying a sample mapredyce code ...READ MORE

Apr 2, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
158 views
0 votes
1 answer

How to sync Hadoop configuration files to multiple nodes?

For syncing Hadoop configuration files, you have ...READ MORE

Jun 21, 2018 in Big Data Hadoop by HackTheCode
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Will hadoop replace data warehousing?

Mostly the answer is yes hadoop is ...READ MORE

Apr 4, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
26 views
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Examples of real world big data open source applications

If you are looking for big data ...READ MORE

Apr 4, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
24 views
0 votes
1 answer

Why does my yarn application not have logs even with logging enabled?

yarn application -list command shows you all ...READ MORE

Mar 19, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
775 views
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1 answer

Why we are configuring mapred.job.tracker in YARN?

I really dont know the reason behind ...READ MORE

Mar 29, 2018 in Big Data Hadoop by Ashish
• 2,630 points
245 views
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1 answer

How to practice programming with Hadoop?

Well there are multiple ways to solve ...READ MORE

Mar 29, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
218 views
0 votes
1 answer

Is Kafka and Zookeeper are required in a Big Data Cluster?

Apache Kafka is one of the components ...READ MORE

Mar 22, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
426 views
+1 vote
1 answer

Is it necessary to use Zookeeper in Hadoop Stack?

ZooKeeper is a centralized service for maintaining ...READ MORE

Mar 27, 2018 in Big Data Hadoop by Ashish
• 2,630 points
127 views
0 votes
1 answer

How to start working on Hadoop?

Ok, so basically, you are looking forward ...READ MORE

Mar 29, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
73 views
0 votes
1 answer

Hadoop MapReduce vs MongoDB MapReduce

Hadoop vs MongoDB MR: 1) Hadoop's MR can ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
193 views
0 votes
1 answer

What is the benefit of using CDH over other Distributors?

CDH is basically a packaged deal, where ...READ MORE

Mar 29, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
54 views
0 votes
1 answer

Hadoop on Windows - Training

If your primary objective is to learn ...READ MORE

Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
140 views
0 votes
1 answer

Access DFS through Java API

It is because, may be you are ...READ MORE

Mar 22, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
343 views
0 votes
1 answer

Is there a good online tutorial for Hadoop development on a Windows 7 machine?

I would suggest you go through this ...READ MORE

Mar 29, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
45 views
0 votes
1 answer

Relationship between Spark, Hadoop and Cassandra?

Spark is a distributed in memory processing ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
169 views
0 votes
1 answer

Is it possible to only install Hadoop HDFS?

First of all think of Hadoop as ...READ MORE

Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
118 views
0 votes
1 answer

How can we send data from MongoDB to Hadoop?

The MongoDB Connector for Hadoop reads data ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
152 views
0 votes
1 answer

How to install Hadoop on Ubuntu?

You can refer to this blog by ...READ MORE

Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
367 views
0 votes
1 answer

Unable to install RHadoop Packages?

I would recommend you to follow https://github.com/RevolutionAnalytics/rhadoop/wiki/Installing-RHadoop-on-RHEL ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,300 points
365 views
0 votes
1 answer

How to create a FileSystem object that can be used for reading from and writing to HDFS?

Read operation on HDFS In order to read ...READ MORE

Mar 21, 2018 in Big Data Hadoop by nitinrawat895
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edited Mar 21, 2018 by nitinrawat895 353 views
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How Impala is fast compared to Hive in terms of query response?

Impala provides faster response as it uses MPP(massively ...READ MORE

Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
349 views
+1 vote
1 answer

Is Hadoop only Framework in Big Data Ecosystem ?

Actually there are many other frameworks, one of ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,630 points
82 views
+1 vote
1 answer

I installed Spark but while executing command, I am getting ‘hadoop’ command not found error?

For accessing Hadoop commands & HDFS, you ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,300 points
287 views
0 votes
1 answer

Other Distributed Alternatives to Big Data Hadoop

Yes, there are lot of alternatives to ...READ MORE

Mar 27, 2018 in Big Data Hadoop by coldcode
• 2,020 points
60 views
0 votes
1 answer

How does the HDFS Client knows the block size while writing?

HDFS is designed in a way where ...READ MORE

Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
42 views
0 votes
1 answer

How to learn Big Data and Ecosystem ?

First understand Big Data and challenges associated ...READ MORE

Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
40 views
0 votes
1 answer

What is Hadoop Distribution ?

Some companies release or sell products that ...READ MORE

Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
35 views
+1 vote
1 answer

HDFS Permission

You have to check permissions on the ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,630 points
36 views
0 votes
1 answer

Hadoop on cassandra database

Regarding your question - there is a ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
63 views
0 votes
1 answer

Testing methods used by a Hadoop developer ?

As such, there is no exact way ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Ashish
• 2,630 points
65 views
0 votes
1 answer

How to set a custom install directory for a deb package with fpm

Here's something that you can try... the last ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Amrinder
• 140 points
91 views
0 votes
1 answer

How to integrate Hadoop with Elasticsearch?

The HDFS snapshot/restore plugin comes in three ...READ MORE

Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
226 views
0 votes
1 answer

How can I get the respective Bitcoin value for an input in USD when using c#

Simply make call to server and parse ...READ MORE

Mar 25, 2018 in Big Data Hadoop by charlie_brown
• 7,720 points
72 views
0 votes
0 answers

Docker: Access a service on host from a container

Mar 26, 2018 in Big Data Hadoop by shubham
• 6,890 points
35 views
0 votes
1 answer

Hadoop security GroupMappingServiceProvider exception for Spark job via Dataproc API

One of the reason behin you getting ...READ MORE

Mar 22, 2018 in Big Data Hadoop by nitinrawat895
• 10,710 points
144 views
0 votes
1 answer

How to run example codes of Hadoop Definitive Guide book?

You will find multiple git repositories where ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,300 points
144 views
0 votes
1 answer

How can I download hadoop documentation for a specific version?

You can go through this SVN link:- ...READ MORE

Mar 21, 2018 in Big Data Hadoop by Shubham
• 13,300 points
92 views
0 votes
1 answer

Is there any Relationship between Hadoop and Databases?

As such, there is no relationship between ...READ MORE

Mar 21, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
56 views
0 votes
1 answer

What is ClickStream Data Analysis

On a Web site, clickstream analysis (also ...READ MORE

Mar 21, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
46 views