What is Apache Hadoop YARN?
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Explain the features of fully distributed mode?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
What is the communication channel between client and namenode/datanode?
How hdfa differs with nfs?
How will you make changes to the default configuration files?
Who is a 'user' in HDFS?
Why do we use Hadoop?
Where is the Mapper Output intermediate kay-value data stored ?
Are Namenode and job tracker on the same host?
What happens to a namenode, when job tracker is down?
Explain the Job OutputFormat?
What is speculative execution in Hadoop?
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