What is structured and unstructured data?
Which database is used in hadoop?
Explain Erasure Coding in Hadoop?
Explain edge nodes in hadoop?
Mention what is rack awareness?
Mention how hadoop is different from other data processing tools?
Explain how can you check whether namenode is working beside using the jps command?
How to use combiner in hadoop ?
What is TextInputFormat in Hadoop?
Give me an example of document database ?
Can you give a detailed overview about the Big Data being generated by Facebook?
Specify what the information segments utilized by hadoop are?
Can you define udf?
What do you know about the speculative execution?
What are the important features of hadoop?