What are the basic available commands in Hadoop sqoop ?
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Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Explain the wordcount implementation via hadoop framework ?
What do sorting do?
Name the examples of some companies that are using hadoop structure?
How does a namenode handle the failure of the data nodes?
What is the difference between HDFS and NAS ?
Define fault tolerance?
How to resolve small file problem in hdfs?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
Mention what are the data components used by Hadoop?
How to write a Custom Key Class?
what is the default replication factor in HDFS?