What is the speculative execution in hadoop?

Asked by Last Modified  

5 Answers

Learn Hadoop

Follow 2
Answer

Please enter your answer

Ranjith N

"Transforming your struggles into success"

Speculative execution in Hadoop is a process of running duplicate tasks on different nodes to finish the job faster by using the result from the task that completes first.
Comments
Dislike Bookmark

I am online Quran teacher 7 years

a mechanism to improve job completion time by running duplicate tasks of slow-performing nodes on faster nodes.
Comments
Dislike Bookmark

"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"

Speculative Execution in Hadoop: Runs duplicate tasks for slow-running ones. Whichever finishes first, its result is used. Helps avoid delays due to stragglers (slow nodes). Improves overall job performance and reliability. Enabled by default in MapReduce.
Comments
Dislike Bookmark

C language Faculty (online Classes )

Apache Hadoop does not fix or diagnose slow-running tasks. Instead, it tries to detect when a task is running slower than expected and launches another, an equivalent task as a backup (the backup task is called as speculative task). This process is called speculative execution in Hadoop.
Comments
Dislike Bookmark

C language Faculty (online Classes )

Apache Hadoop does not fix or diagnose slow-running tasks. Instead, it tries to detect when a task is running slower than expected and launches another, an equivalent task as a backup (the backup task is called as speculative task). This process is called speculative execution in Hadoop.
Comments
Dislike Bookmark

View 3 more Answers

Related Questions

What are some of the big data processing frameworks one should know about?
Apache Spark ,Apache Akka , Apache Flink ,Hadoop
Arun
0 0
5
Is it worth to switch from manual testing to Hadoop?
Yes..Here you can n build your career easily .it is good time to switch into hadoop . You should learn with some realtime experience.after learning u can work into analytics or testing also.programming...
Aditi
0 0
7
How many nodes can be there in a single hadoop cluster?
A single Hadoop cluster can have **thousands of nodes**, depending on hardware and configuration.
Tahir
0 0
7
Hello everyone, I have completed B.Com, MBA (FIN). Please suggest me which IT course suitable to my career growth. Thanks.
Its better to learn any business analytics courses.
Priya
Is an mba persuing student eligible for persuing hadoop course?
Yes there are some institutes are offering courses on big data . Those are like MBA in analytics. Google it you will find more info
Osheen
0 0
9

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 Infrastructure & Services: Basic Concept
Hadoop Cluster & Processes What is Hadoop Cluster? Hadoop cluster is the collections of one or more than one Linux Boxes. In a Hadoop cluster there should be a single Master(Linux machine/box) machine...

Sayan Goswami

1 0
0
CheckPointing Process - Hadoop
CHECK POINTING Checkpointing process is one of the vital concept/activity under Hadoop. The Name node stores the metadata information in its hard disk. We all know that metadata is the heart core...

Silvia P.

0 0
0
Hadoop v/s Spark
1. Introduction to Apache Spark: It is a framework for performing general data analytics on distributed computing cluster like Hadoop.It provides in memory computations for increase speed and data process...

Gopal Raj

0 0
0
How Big Data Hadoop and its importance for an enterprise?
In IT phrasing, Big Data is characterized as a collection of data sets (Hadoop), which are so mind boggling and large that the data cannot be easily captured, stored, searched, shared, analyzed or visualized...

Prwatech

1 0
0

Recommended Articles

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 >

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 >

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