Posted by mod198 January - 24 - 2015 34 COMMENTS

In this presentation, Sameer Farooqui is going to introduce the Hadoop Distributed File System, an Apache open source distributed file system designed to run…

HDFS Architecture

This is the class room training videos for Hadoop in DurgaSoftware solutions.

Tags : , , , , Big Data Analytics

34 Responses to “Hadoop Tutorial: Intro to HDFS”

  1. Mike Caldwell Says:

    Very Very Nice, really clear, slow, good insights, examples, I am starting
    a new job and jumping into HaDoop, Solr, Hortonworks and I will keep you in
    mind when we need help or training.

  2. Steve N Says:

    Thank you very much, Sameer. Excellent tutorial! and you are talented 

  3. victor kebande Says:


  4. alihammad baig Says:

    Can we have the presentation??

  5. Tanmay Patil Says:

    Really good presentation, HELPFUL!

  6. Apostolos Georgas Says:

    Thanks a lot. Excellent intro!

  7. easy_maddy Says:

    Thankyou Sameer, for this lucid yet insightful presentation. Just the right
    detail for any stater. Great job:)

  8. RockPT Says:

    Great video! It really helped me understand what Hadoop is and how HDFS
    works!! Thumbs up!!

  9. Mark Burton Says:

    Excellent intro. Thanks.

  10. Manuel Bolivar Says:

    Very targeted presentation. Any other videos on the same theme?

  11. Rob Bates Says:

    Excellent presentation, both content, pace, & delivery. Thanks!

  12. Al Diggy Says:

    very educational and clear. thanks!!!

  13. Zafar Ahsan Says:

    Good job, keep it up Sameer, It could be helpful too if you could tell on
    what basis the client and NameNode decide which DataNode should be
    contacted first during read operation( suppose the data block is on node 1
    3, 7).

  14. rich cohen Says:

    Is it single point of failure or failover. and you didn’t explain what
    Secondary NameNode is? can you explain that also. a great lecture. thank

  15. Vijaya Krishnan Says:

    excellent explanation with good examples for HDFS, nice work sir

  16. shreedhar Mathad Says:

    I don’t think information about replications of file(s) will be sent to
    client. It will be sent to NAME NODE. Client need not to know about
    replications. Its Data nodes will not interact with clients directly. Only
    single point of contact for clients is NAME NODE, Which stores all the
    information of underlying infrastructure like where all the files(s) have
    been scattered.

    Correct me if i am wrong.

  17. Sriram Anantha Padmanaban Says:

    Excellent training session! All the very best Ram for your future

  18. Aneer P A Says:

    good lecture .. but inspired from cbt nuggets Hadoop course …

  19. Prasanna Prabhu Says:

    I spent 1 hour listening, think this is one of the best “HDFS Architecture”
    video I have found so far. Kudos!!!!

  20. Sai Krishna Says:

    Nice explanation ! However one question. What if the the data node where
    Reducer resides, goes down. In that case how does the output processing is
    done, do we have a replication factor configured for the output as well ?.
    And how many Reducer’s are available in a clustered environment.

  21. santosh waghmare Says:

    Its a best lecture I had ever on Big Data HDFC. Really thankful to you. 

  22. Ch Koti Says:


  23. globalwarming08 Says:

    Very concise and spot on. No BS. Thanks!

  24. David Guarneri Says:

    I like the teaching style. Very good, thanks.

  25. Subrahmanyam Ede Says:

    Nice explanation……very useful….thank you RK…ALL THE BEST

  26. Raja Kumar Says:

    Dear Rama Krishna,

    Really good to listen your session. Especially, your real time example is
    very good. Keep this up. Thanx for your valuable effort.

  27. prachi mittal Says:

    Hi Sir,

    very well explanation.Please provide me the sequence of these videos.Thanks
    in advance.

  28. Uday Patel Says:

    Good Explanation!!

  29. Azizul huq Says:

    RK sir you rock man. First time I understood something without watching
    another tutorial on same topic. I had one suggestion. If possible make
    links in the video that you can use to move back and forth to the key
    concepts. As an example if I want to listen about “input splits” again I
    can click the link to go to time 52:00 on the video for it. Thank you so
    much for a great tutorial.

  30. Venkatesh Shunmugham Says:

    Great Video sir… We really need such tutors who can teach us so well.

  31. Swapna Soni Says:

    Sir I have a question like, What will happen if I update my block size from
    64MB to 128MB. what will happen to existing files which were saved with 64
    MB block size?

  32. rajat mathur Says:

    Excellent Job! Great for beginners !!
    Can you please create a playlist so that we can now the link to the next
    video !

  33. MegaBytes MB Says:

    Superb explanation… really appreciative explanation.. 

  34. Mudunuri Vishnu Says:

    Hi rama krishna very nice presentation the problem for me is the pogramming
    and instead of this can we do the job done by using HIVE and PIG

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