How does datanodes tackle DataNode failures?

Asked by Last Modified  

1 Answer

Learn Hadoop +2 Hadoop Testing

Follow 1
Answer

Please enter your answer

Venu Katraggada

Trainer

Ur question is wrong. i think namenode tracks datanode failure.datanode send heartbeat to namenode. if datanode not sending heartbeat at that time namenode treat as datanode not working.. consider as dead node.
Comments
Dislike Bookmark

Related Questions

What are the biggest pain points with Hadoop?
The biggest pain points with Hadoop are its complexity in setup and maintenance, slow processing due to disk I/O, high resource consumption, and difficulty in handling real-time data.
Anish
0 0
6
Which is easy to learn for a fresher Hadoop or cloud computing?
Hadoop is completely easy . You can learn Hadoop along with other ecosystem also . If you need any support then feel free contact me on this . i can help you to lean Hadoop in very simple manner .
Praveen
0 0
5
Hi everyone, What is Hadoop /bigdata and what is required qualification and work experience background for Hadoop/bigdata?
Hadoop is the core platform for structuring Big Data, and solves the problem of formatting it for subsequent analytics purposes. Hadoop uses a distributed computing architecture consisting of multiple...
Priya
What is big data and Hadoop?
Big data refers to extremely large datasets that cannot be easily managed or analyzed using traditional data processing tools. Hadoop is an open-source framework designed to store and process big data...
Parini
0 0
5
How do I switch from QA to Big Data Hadoop while having little knowledge of Java?
yes.for big data java basic knowledge is helpfull
Jogendra
0 0
6

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Lets look at Apache Spark's Competitors. Who are the top Competitors to Apache Spark today.
Apache Spark is the most popular open source product today to work with Big Data. More and more Big Data developers are using Spark to generate solutions for Big Data problems. It is the de-facto standard...
B

Biswanath Banerjee

1 0
0
Bigdata hadoop training institute in pune
BigData What is BigData Characterstics of BigData Problems with BigData Handling BigData • Distributed Systems Introduction to Distributed Systems Problems with Existing Distributed...

Eknowledge

0 0
0
Lesson: Hive Queries
Lesson: Hive Queries This lesson will cover the following topics: Simple selects ? selecting columns Simple selects – selecting rows Creating new columns Hive Functions In SQL, of which...

Chitra S.

0 0
0
Python Programming or R- Programming
Most of the students usually ask me this question before they join the classes, whether to go with Python or R. Here is my short analysis on this very common topic. If you have interest/or having a job...

Jatin Miglani

2 0
0
Understanding Big Data
Introduction to Big Data This blog is about Big Data, its meaning, and applications prevalent currently in the industry.It’s an accepted fact that Big Data has taken the world by storm and has become...
M

Mymirror

0 0
0

Recommended Articles

Growth and Career Prospects in Big Data

Big data is a phrase which is used to describe a very large amount of structured (or unstructured) data. This data is so “big” that it gets problematic to be handled using conventional database techniques and software.  A Big Data Scientist is a business employee who is responsible for handling and statistically evaluating...

Read full article >

Learn Hadoop and Big Data

Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Should you Become a Data Scientist

We have already discussed why and how “Big Data” is all set to revolutionize our lives, professions and the way we communicate. Data is growing by leaps and bounds. The Walmart database handles over 2.6 petabytes of massive data from several million customer transactions every hour. Facebook database, similarly handles...

Read full article >

Find Hadoop near you
Hadoop in Hyderabad

Looking for Hadoop ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you