Is it necessary to write jobs for hadoop in the java language?
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What is a block and block scanner in HDFS?
What happens to job tracker when namenode is down?
What is inputsplit in hadoop? Explain.
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What is the difference between HDFS and NAS ?
Does this lead to security issues?
Can you give us some more details about ssh communication between masters and the slaves?
What is your favourite tool in the hadoop ecosystem?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
How to resolve IOException: Cannot create directory
Why do we use Hadoop?
Explain the features of stand alone (local) mode?
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