Aravind R. Yarram

Getting started with Hadoop

Getting started with Hadoop ecosystem is quite different than getting hands dirty with any other library. I plan to document here, few important points of my learning for the benefit of others.

Local Installation

Running HBase Java applications on Hortonworks Hadoop Sandbox 2.x with YARN

Running a Java HBase client in the Hortonworks Sandbox was not easy/intuitive as HBase is not enabled by default.

JMock — Lessons learned

• Expectations are asserted after the run of each test method
• Expectations are additive, so remember to call mock.reset() if you are planning to set a new expectation in each test method
• If u r using JUnit 4 and above then you no need to…

JMock — mocking the same interface multiple times

A subject can have multiple addresses which i wanted to mock. but the below attempt throws the fololwing error
java.lang.IllegalArgumentException: a mock with name tokenizedUnitedKingdomAddress already exists

Handling Exceptions in Mule

Proper exception handling is a requirement of any integration application. Handling errors with Mule seems to be challenging for a beginner. So here i present various ways of dealing with exceptions to the best of my knowledge.