We have already sql then why nosql?
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What is difference between reducer and combiner?
What do you think about the speculative execution?
Give me the examples of Columnar database ?
Can you explain hadoop streaming?
What are configuration files in Hadoop?
Explain the Single point of Failure in Hadoop?
Give me an example of document database ?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
What kind of hardware is best for hadoop?
How ordering in hdfs is finished?
What is TextInputFormat in Hadoop?
Define data cleansing?
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