Is it necessary to know java to learn hadoop?
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how would you modify that solution to only count the number of unique words in all the documents?
Define fault tolerance?
How indexing is done in HDFS?
What hadoop does in safe mode?
Is hadoop open source?
Is it necessary to write jobs for hadoop in the java language?
What are the basic available commands in Hadoop sqoop ?
Explain how is hadoop different from other data processing tools?
Define a datanode?
What is Apache Hadoop?
Define a job tracker?
What is Hadoop serialization?