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Passed CCD-410 Hadoop Developer with 88%

John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
(Mods if you think this should be in the Hadoop forum, or both, please move)

I wouldn't say it was hard per se, but Hadoop has a lot of funky concepts.

For preparing, "24 hadoop interview questions" on the net is a great starting point. I then went through Tom White's Hadoop the Definitive Guide 3rd Ed, chapters 2-8 completely, typing out full notes and reading them constantly. For the other parts of the ecosystem, you need a high level overview with the basics of how they work and what they can do that Hadoop can't.

On my laptop, played with local-mode in Eclipse plus pseudo-mode with jar files. Tried lots of variations with a simple wordcount program:
Zero reducers, identity reducer, identity for both, combiners added
Logging and counter techniques
Made a chart of the 5-6 ways to set a property value and which took priority
List of the default conditions for things you don't specify (Hadoop can run given just IO paths).
Made a list of HDFS commands and kept playing around with them

Studied mock questions on the net, some had wrong answers, so be careful. Was going to purchase from HadoopExam.com, but they required submitting my MS Product Key, and I wasn't willing to do that. A shame, they advertised 200 questions for $45.

Took me a couple months of hardcore studying until it all became clear. The book took the most time, reading about 270 pages twice and doing notes.

In the future, I plan to also do the Cloudera certs for HBase, Hadoop admin, and Data Scientist. Will also take the Coursera Scala class with comes with a signed certificate. And maybe check into Apache Cassandra (no cert yet from what I could tell).

Big Data is fun.
Dave Trower
Ranch Hand

Joined: Feb 12, 2003
Posts: 86
I am in the process of taking the Coursera class called "Introduction to Data Science". We got to practive hadoop on Amazon's platform.
You would probably like this class if it it comes around again.
Course Page
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
Thanks for the heads up, I sure wish there were more hours in a day...
Jhonson Ferndando
Ranch Hand

Joined: May 31, 2013
Posts: 50
Congratulations !


Jhonson Fernando
Java Training Consultant for EPractize Labs Software

Sv Balakrishnan
Greenhorn

Joined: Oct 12, 2013
Posts: 1
Hi All,

I have also cleared the Hadoop Developer as well as Administrator exam in first attempt and cloudera exam should not be taken light, because of its cost as well as level of the questions. Please find below whatever I had followed to prepare the exam. However, I want to clarify here that www.HadoopExam.com do not ask any Microsoft (MS) keys for simulator. Once you install the trial version of their simulator on your computer, their software generate some unique key, which they need it to identify uniqueness of the machine to avoid any theft of the software and I don't see anything wrong with that.

I passed both CCAH & CCDH and here is what I did in that order.

1)www.HadoopExam.com Training Videos and Certification Simulator

Their Videos are very well designed for the core understanding of Hadoop Architecture. The lectures are very precise yet comprehensive, which cuts learning time significantly, besides providing a definite edge in certification exam and job interviews. Trainer did a great job in delivering the essential material in such a concise and effective manner that gives the learner very good foundation in Hadoop framework.

2)http://developer.yahoo.com/hadoop/tutorial/index.html

3)http://hadoop.apache.org/docs/current/

4)Hadoop Definitive Guide_Tom White

5)Hadoop Operations_Eric Sammer

6) Practice : Implemented Simple word count example small program to get hands on.

Thanks
Muhammad Khojaye
Ranch Hand

Joined: Apr 12, 2009
Posts: 449

There is another course on Coursera named Web Intelligence and Big Data. Congratulations


http://muhammadkhojaye.blogspot.com/
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
Muhammad Khojaye wrote:There is another course on Coursera named Web Intelligence and Big Data. Congratulations


I'm in the middle of the class now. It's pretty interesting, the teacher approaches things from a different angle and likes to discuss side issues. The first programming assignment was a simple map-reduce using a python framework, which is always a sweet language to play with.

Sorry about the bum steer on the product key, their website could be a little clearer though.
Sudarshan Sreenivasan
Ranch Hand

Joined: Jun 28, 2007
Posts: 188

Can you share "Made a chart of the 5-6 ways to set a property value and which took priority " this ? ... I think it would be useful to a lot of people
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
Sudarshan Sreenivasan wrote:Can you share "Made a chart of the 5-6 ways to set a property value and which took priority " this ? ... I think it would be useful to a lot of people


Sorry for the delay, just noticed this.

John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
And passed Cloudera Hadoop Administrator today, again with 88%. That seems to be my number.

I definitely recommend trying to do them close together because there's a lot of common material.

The Cloudera practice questions help, even though they're $125.

Now onto studying functional programming, then data science after that. Already have pieces of both.
Mahtab Alam
Ranch Hand

Joined: Mar 28, 2012
Posts: 319

Great Going Keep it up, Almighty is with you.


http://www.mahtabalam.net , Oracle Java Programmer , Oracle SQL Expert , Oracle Java Web Component Developer
Jayottam Jadhav
Greenhorn

Joined: Jun 18, 2014
Posts: 1
Hi John Soper, i also wish to pass CCD-410 for which i have purchased practice test from cloudera. as you have mentioned that you also have taken some practice test from them and then have experience of giving real test. can you please guide me on following two question.

1) The questions form real test are from practice test ? YES/NO
if yes how many of them out of 60 approx.
2) Do i need anything other than this practice exam and explanation provided by them in result.

Thanks in advance.
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
1. Hadoop admin is the only one where I'd bought the practice questions and took the cert. Don't remember if any were the same, but they were similar, and understanding the practice questions is helpful for your career in general. It's not just about passing the cert, you also need to answer interview questions.

2. Study Tom White's book over and over. Play with a simple word count program over and over, try lots of options.

3. Study for the Hadoop admin cert at the same time, lots of common ground. Only about 50% more work, but twice as impressive. Hadoop Operations is the book for that.
danny wu
Greenhorn

Joined: Jun 21, 2014
Posts: 1
Jayottam Jadhav wrote:Hi John Soper, i also wish to pass CCD-410 for which i have purchased practice test from cloudera. as you have mentioned that you also have taken some practice test from them and then have experience of giving real test. can you please guide me on following two question.

1) The questions form real test are from practice test ? YES/NO
if yes how many of them out of 60 approx.
2) Do i need anything other than this practice exam and explanation provided by them in result.

Thanks in advance.


Hi, Jayottam Jadhav and John Soper,
I am considering whether I need to buy the practice exam for CCD-410 and could you please let me know how many questions are included in the CCD-410 practice exam? my concern is that if the number of included practice questions is just 60, is it worth to spend 125 dollars for it?

thank you very much!
saurabh pant
Greenhorn

Joined: Apr 16, 2012
Posts: 5
Hi John Soper/Recent exam taker ,

I am also going for the CCD-410 in a few weeks. Can you please let me know nearly how many scenario based questions(code based questions) are going to be in the exam ? And on what topics ? Because in the hadoopexam dumps,they have got plenty of them.Some are them are even tough based on sequence file and some others.
Any help/advice is appreciated.
Sai Babu
Greenhorn

Joined: Apr 04, 2008
Posts: 23
Congratulations !! John and Bala,

I am also preparing for developer and admin exams, i am a newbie though,

i'd like to know if there is any document on how to install the sand box for practicing.

any help is greatly appreciated!!


Sai Babu
SCJP, SCWCD
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
Don't know about any sandbox tools. I still think the best way is to master (or even memorize) word count code, everything else is built from that. My two favorite examples are below. Besides that, Tom White and Eric Sammer are your new best friends, don't go anywhere without their books.

Streaming:


Non-Streaming:
zach zhang
Ranch Hand

Joined: Aug 04, 2014
Posts: 47
Hi john:

Could you share you daily time schedule for preparing for the exams? say how many hours per day and how many days in total?

thanks!
John Soper
Greenhorn

Joined: Dec 05, 2012
Posts: 25
That's a pretty tough question. Maybe 4-6 man-weeks for Developer, then 2-3 man-weeks for Admin (if developer was just passed). Having the slides from training class and the example exams will help reduce that some.
If you go into this field, you're going to have to learn that stuff anyway though. It's not like it's a diversion takes you away from something really important.
Here's the notes for the Admin cert. I saved a copy and cleaned up the editing and added a few things as I went through Hadoop Operations
notes
Sai Babu
Greenhorn

Joined: Apr 04, 2008
Posts: 23
Hey John,

appologies i did'nt check this forum for quite some time.
Thanks for the suggestions i already made Tom White my best buddy
i started read Hadoop: The Definitive guide, it seems to be great source for Hadoop.

yet to meet my another new friend Eric Sammers,

Thanks guys & best of luck in preparing for this exam.
 
It is sorta covered in the JavaRanch Style Guide.
 
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