What is Distributed Cache?
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What are different hdfs dfs shell commands to perform copy operation?
What is a Record Reader in hadoop?
What if a namenode has no data?
What is the difference between a Hadoop and Relational Database and Nosql?
what factors the block size takes before creation?
explain Metadata in Namenode?
What is the relation between job and task in hadoop?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
What is difference between split and block in hadoop?
What is the purpose of RawComparator interface?
what is the default replication factor in HDFS?
What is compute and Storage nodes?
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