How the Client communicates with HDFS?
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What is safe mode in Hadoop?
what is a datanode?
Explain the use of .mecia class?
What is the difference between SQL and NoSQL?
how can we change Replication Factor?
Does hadoop always require digital data to process?
What is the InputFormat ?
What is the meaning of speculative execution in Hadoop? Why is it important?
How indexing is done in HDFS?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Explain the core components of hadoop?
How to keep HDFS cluster balanced?
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