What is Schema on Read and Schema on Write?
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What is output format in hadoop?
How many instances of tasktracker run on a hadoop cluster?
How hdfa differs with nfs?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
What is the difference between rdbms and hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
what are the steps involved in commissioning adding
Does the hdfs client decide the input split or namenode?
Explain what if rack 2 and datanode fails?
How the HDFS Blocks are replicated?
What is the process to change the files at arbitrary locations in HDFS?
What is Derby database?
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