Hadoop MapReduce vs MongoDB MapReduce

0 votes
What are the key differences between Hadoop MR & MongoDB MR, I mean how Hadoop MapR is different from MongoDB MapR?
Mar 26, 2018 in Big Data Hadoop by Shubham
• 13,490 points
1,172 views

1 answer to this question.

0 votes

Hadoop vs MongoDB MR:

1) Hadoop's MR can be written in Java, while MongoDB's is in JavaScript.

2) Hadoop's MR is capable of utilizing all cores, while MongoDB's is single threaded (upto 2.4)

3) Hadoop MR will not be collocated with the data, while Mongo DB's will be collocated.

4) Hadoop MR has millions of engine/hours and can cope with many corner cases with massive size of output, data skews etc

5) There are higher level frameworks like Pig, Hive, Cascading built on top of the Hadoop MR engine.

6) Hadoop MR is mainstream and a lot of community support is available.

Hope this will help!

To know more about it, get your Mongodb certification today.

Thanks.

answered Mar 26, 2018 by nitinrawat895
• 11,380 points

Related Questions In Big Data Hadoop

0 votes
1 answer

Hadoop: How to Group mongodb - mapReduce output?

db.order.mapReduce(function() { emit (this.customer,{count:1,orderDate:this.orderDate.interval_start}) }, function(key,values){ var category; ...READ MORE

answered Oct 31, 2018 in Big Data Hadoop by Omkar
• 69,210 points
661 views
0 votes
1 answer
0 votes
10 answers

What is the difference between Mongodb and Hadoop?

MongoDB is a NoSQL database, whereas Hadoop is ...READ MORE

answered Jun 20, 2018 in Big Data Hadoop by jenny_code
11,266 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,390 points
4,234 views
0 votes
1 answer

“no such file or directory" in case of hadoop fs -ls

The behaviour that you are seeing is ...READ MORE

answered May 9, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points

edited May 9, 2018 by nitinrawat895 7,789 views
0 votes
1 answer

Integration of Hadoop with Mongo DB concept

MongoDB isn't built to work on top ...READ MORE

answered Sep 25, 2018 in Big Data Hadoop by Frankie
• 9,830 points
1,446 views
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
10,523 views
+1 vote
1 answer

Cassandra and Hadoop - realtime vs batch

Apache Hadoop, is a big data analytics ...READ MORE

answered Mar 26, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
1,473 views
0 votes
1 answer

How can we send data from MongoDB to Hadoop?

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

answered Mar 27, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
1,875 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP