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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…

APPIAN, PEGA, Oracle BPM Tools-Career Options

Gartner recently broadened the definition of BPM, recasting it as a management practice that provides for governance of a business's process environment toward the goal of improving agility and operational performance.

Business Process Management

This more holistic view offers a structured approach for optimizing processes and takes into account the software tools discussed above as well as an organization's methods, policies, metrics, and management practices.

According to Gartner, BPM is about becoming a process-managed organization, which requires the following disciplines (in addition to Information Technology.

Appian BPM is a business process management solution that can help users to manage work automation, business processes and social collaboration across the enterprise for customers, employees, and systems.

General Skills Need for a BPM developer

  • BPMN 
  • JavaScript 
  • SQL 
  • HTML 
  • CSS 
  • SOAP 
  • Web services standards 
  • XML 
  • XPATH 
  • XSLT 
  • LDAP/AD

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