You have managed to take the written article published by google and explains Google File System and MapReduce in a very good, clear way so anyone can consume it. good job!

This is how one should teach. Loved it!

Best explanation of GFS on KZread. This is how one should teach. Wish the channel had posted more such videos.

Thank you for getting into distributed systems realm. Would love to see some videos about the workings of cassandra.

This explanation and the voice clarity is too good, thanks a lot for the video

amazing video. the finest tutorial of GFS on youtube.

Now I realsed that my teacher must have watched this video before lecture .

Excellent video clearing the basics of GFS.

Your videos are crisp and very clear. Thanks. Keep up the good work😊👍

Very well systematically explanation.! Great Work! Thank you. God bless you.

Your explanation is GREAT.

high quality video. your explanations are clear as crystal

Perfect explanation .Thank you for this.

Thanks for the great content. But I haven't seen any recent videos from you, it'd be great if you start making these videos again, they're just wonderful.

Very clear explanation. Thank you!

Very well explained and articulated.

So a simple explanation. Amazing.

Very nicely explained.Thanks a lot :)

Can't wait for the BigTable and DynamoDB episodes!! Also can you do one on pagerank?

Very well explained. Thanks for the content and effort

Excellent Explanation sir. Loved it. Wanted to learn more on it. I am now big fan of yours. Watched most of your videos and trying to read as much possible from you sir. Please consider to share more videos on this topic.

@DefogTech

4 жыл бұрын

Thank you so much for your kind words! Planning to do more videos soon

FWIW the google paper left out some of the details you needed for full resilience. We had to learn those through things going wrong -e.g the infamous facebook cascade failure where, once a critical mass of servers went offline, the recovery work took the rest down

Thank you! a very clear explanation.

Very nicely explained. Thank you.

Great explanation! Thanks.

Amazing video, super clear.

Amazing video. Thank you so much

Great video. Thanks for making. There is a typo in the last slide about chunk size being 64kb instead of 64mb :)

Great job!

Nice! Very easy to follow

Such a good explanation.

Well explained ,thank you.

Very well explained , thanks

Great explanation.

Very good explanation!

Exceptional sir.

Awesome explanation

Epic!

great content , thank you

Great explanation

Awesome 👍

Well done,thank you

Awesome

Gold !

Really good video.

Very helpful.

Perfect.

Good work

Thank you for your video

Thank you so much..

Hi , Can you make video related to transaction management ,propagations ,isolations,2-phase commit, deadlocks in transactions..

🙏 You are the Best Teacher that I have ever seen.🥇, A classical method of approach = Superb indeed.👌.🎯Please Could you kindly teach us Flutter & Dart & Go lang & Scala too . Pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeese Sir..... 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

@DefogTech

4 жыл бұрын

Thank you so much for the kind words. Definitely plan to continue creating videos, and also covering more topics like Dart and Go

Very nice explanation. Thank you so much for the same. I had a few questions - 1. Which type(s) pf write operation(s) can a client application perform on the files. In other words, what does GFS supports in terms of writing into files? 2. Where in the file the writing can be done? 3. How much data can be written there and by how many applications at the same time and at the same location? 4. In what type of memory is the metadata stored on the master

@spider-bot

Жыл бұрын

Bit late but hopefully others find it useful: Regarding (1) & (2), GFS was primarily aimed at applications which involved appending data to a long-running file, with random location writes happening rarely (if at all). For (3), the limits would depend on the actual implementation - this was just a theoretical paper on GFS. But yes, it is meant to support concurrent writes. And regarding (4), the Master keeps a track of all the files on the GFS, a list of chunk handlers that make up each file, and the list of chunk servers that hold a particular chunk (there are multiple servers for redundancy) Additionally the master keeps a log of all the changes that were made (along with checkpoints), so that it can recover from crashes

I really like your videos and regular follower of your channel. Please publish a video on Cassandra architecture. If possible.

@DefogTech

5 жыл бұрын

Yes sir! Cassandra is similar to Google Bigtable. Will cover it soon.

waw u explained so smilply

Gr8

its architecture somewhat similar to napster ( I think napster was ahead of its time)

If each chunk has 3 replicas, then will there be a total of 4 such chunks ?

💙

Thanks, can you also explain MapReduce please?

@DefogTech

5 жыл бұрын

Absolutely. That video is coming tomorrow!

Hey , request you to please make new video. Eagerly waiting for your new videos.

Good one buddy👏

@DefogTech

5 жыл бұрын

Thank you buddy! Btw, Congrats on 40K, that was fast!

@TechPrimers

5 жыл бұрын

Defog Tech thanks dude🙏🏻

@sanjaykantheti4002

5 жыл бұрын

I m happy to see 2 good Java content creators at one place. Continue the legacy. :)

@TechPrimers

5 жыл бұрын

Sanjay Kantheti 🤘

👍🏿👍🏿👍🏿

Can you please do Dynamo paper

Hey , why have you stopped uploading videos....let me know if you need any funding

@DefogTech

4 жыл бұрын

hey, thanks so much for reaching out.. just been busy with new job, and added laziness :( I am researching for NoSQL series, but will take time. Regarding funding, absolutely.. I love teaching and hope to someday do this fulltime. Might start KZread subscriptions for earning. Let me know your thoughts, is ~130 INR a month something everyone would go for, or should it be course based fees on a separate website?

@prashantjha439

4 жыл бұрын

@@DefogTech , this channel is my first point of reference for any cs related topic , things that make your videos unique are the awesome slides , quality content & very crisp explanation. I myself being a software professional at Adobe frequently watch your videos, so yes youtube subscription seem to be a viable option. Hoping you to resume soon so that we can make best amidst the lockdown. :)

is the master something like a zookeeper?

@DefogTech

5 жыл бұрын

No, it's a single instance backed by a secondary one unlike concensus based one like zookeeper

The chunk is **64KB** NOT MB

@DefogTech

2 жыл бұрын

It is 64MB. GFS is used mainly for large files with append-only structure. In the paper there is good trade-off of why they chose 64MB.

@user-zs7mu4oq8e

Ай бұрын

MB

Explained clearly. Thanks.