Explain the overview of hadoop history breifly?
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Explain the features of fully distributed mode?
What should be the ideal replication factor in Hadoop Cluster?
Define a metadata?
How can we check whether namenode is working or not?
Is it necessary to write jobs for hadoop in the java language?
Can you explain how do ‘map’ and ‘reduce’ work?
what is the typical block size of an HDFS block?
In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?
What happens to a namenode, when job tracker is down?
Explain Erasure Coding in Apache Hadoop?
What is inputformat in hadoop?
How can we look for the namenode in the browser?
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