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The Ultimate Cheat Sheet On Hadoop

Top 20 frequently asked questions to test your Hadoop knowledge given in the below Hadoop cheat sheet. Try finding your own answers and match the answers given here.




Question #1 

You have written a MapReduce job that will process 500 million input records and generate 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reducers which is a potential bottleneck. A custom implementation of which of the following interfaces is most likely to reduce the amount of intermediate data transferred across the network?



A. Writable
B. WritableComparable
C. InputFormat
D. OutputFormat
E. Combiner
F. Partitioner
Ans: e




Question #2 

Where is Hive metastore stored by default ?


A. In HDFS
B. In client machine in the form of a flat file.
C. In client machine in a derby database
D. In lib directory of HADOOP_HOME, and requires HADOOP_CLASSPATH to be modified.
Ans: c




Question…
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Social Media Career Options

Social Media career
Skill Set for Social Media Jobs
  • Understands social media universe including Facebook, Twitter, Google+, Instagram, Pinterest, YouTube, Vimeo, Yelp, Urbanspoon, TripAdvisor, Company Blogs/Wordpress and more 
  • Able to work effectively in a multi-tasking environment 
  • Excels at research, possesses excellent writing skills and the ability to create editorial and technical writing output quickly 
  • Proficient with Microsoft Office products, or preferably Apple iWork products 
  • Demonstrated creativity and documented immersion in social media 
  • Have excellent verbal and written communication skills and an ability to work individually on a project or in a team environment 
Social media popularity from Udemy
The career options
  • Management of social media
  • Copy writing
  • Design
  • Public speaking
The popular training (#sponsored)


Popular training in social media

The Hot and coldest skills as per dice



The other popular Social media managers
  • Content creation
  • Marketing analytics
  • News junkie
  • Customer service
  • Community management
  • Funnel marketing
  • Project management

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