Phew!!!
Today I cleared CCD-410: Cloudera Certified Developer for Apache Hadoop exam. Really tough one, I must say…
It all started when I took the Cloudera training in November
2013. Joris Bontje (Twitter: @mids106) was the trainer. It was very wonderful
and knowledgeable training.
Some tips in case you are one of the Hadoop aspirants and
want to get certified. If you have been developing Map Reduce application for
some significant period then it is fine otherwise it is going to be tough to
clear the exam. Cloudera training will definitely help you in that case as we
did some hands-on on various map reduce programs. It started from simple map
reduce to various interfaces like Reducer, Mapper, Partitioner etc.
You should read “Hadoop: The Definitive Guide” thoroughly
before attempting the exam. If you have not worked on Mapreduce and didn’t take
the training as well, then please read “Hadoop in Action” too apart from doing
good amount of hands-on exercises on either Hortonworks or Cloudera VM.
Since I attended the training I got unlimited practice exams
as complimentary. After many trials I was able to achieve 100% marks. It
consisted of 60 questions (actual exam had 55). The difficulty level was higher
in actual exam though 1 or 2 questions were taken from practice exam.
The sections are listed on this page. One should have good
understanding of Job execution, Data Management and Queries. Questions from features
like Counters, Secondary Sorts, HiveQL were also asked in the form of Map
reduce programs. HDFS commands and parameters to run the program must be
understood properly.
No handkerchief, pen/pencil, mobile/ bag was allowed in the
room. The whole process was under CCTV surveillance. Exam started as I clicked
on “Agree” button of terms and conditions. Clock started ticking and I started
answering the multiple choice. MCQs may contain some of the questions where
multiple answers are possible.
Many answers may look similar so it is important to read the
question and the options available again and again till you are absolutely sure
(It is the matter of 295 USD :-) ).
All the best friends!!
Resources that I got knowledge from:
- Hadoop-The Definitive Guide
- 24 Interview Questions
- Cloudera Practice Exam (Complimentary with training)
- Cloudera Certification FAQs
- Cloudera and Hortonworks VM
- Cloudera Study Guide
