What is JPS? Why is it used in Hadoop?
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Define a udf?
Can you explain speculative execution?
How often do you need to reformat the namenode?
What is the procedure for namenode recovery?
What is 'jps'?
Explain in which directory hadoop is installed?
How to use combiner in hadoop ?
Why is Data Block size set to 128 MB in Hadoop?
How many datanodes can run on a single Hadoop cluster?
Which language is more suitable for text analytics? R or python?
What are the features of Standalone (local) mode?
How to create the directory when name node is in safe mode?
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