What happens to a namenode, when job tracker is down?
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shouldn't DFS be able to handle large volumes of data already?
Whats is distributed cache in hadoop?
Is hadoop a database?
What do you know about nlineoutputformat?
How can you overwrite the replication factors in HDFS?
What do you mean by taskinstance?
What is the function of NodeManager?
On what basis name node distribute blocks across the data nodes?
Why are the number of splits equal to the number of maps?
Explain the basic difference between traditional rdbms and hadoop?
Input Split & Record Reader and what they do?
Can we do online transactions(oltp) using hadoop?
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