Explain about Hadoop file system and processing framework?
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What are the benefits yarn brings in to hadoop?
What is Fault Tolerance?
If DataNode increases, then do we need to upgrade NameNode?
What is the use of cloudera?
What is the job tracker role in hadoop?
What are the core methods of a Reducer?
What are some typical functions of job tracker in hadoop?
We have already sql then why nosql?
Compare Apache Hadoop and Apache Spark?
How often do you need to reformat the namenode?
Mention what are the three modes in which hadoop can be run?
Can you give some examples of Big Data?
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