Which of the following are the best testing and debugging practices fo

1.	Which of the following are the best testing and debugging practices for
Answer» Which of the following are the best testing and debugging practices for MapReduce jobs? CHOOSE the correct answer from below list (1)Builds a small Hadoop cluster for the sole purpose of debugging and testing MapReduce code. (2)Use proper development techniques, like encapsulation and ABSTRACTION (3)BUILD UNIT test cases that will BEHAVE unpredictably in different Hadoop environment. (4)Ensure test cases run successfully in most of your deployments. Answer:-(1)Builds a small Hadoop cluster for the sole purpose of debugging and testing MapReduce code.

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