What is inputsplit in hadoop? Explain.
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What is 'Key value pair' in HDFS?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
Mention what is the use of Context Object?
How to restart Namenode?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Where is the Mapper Output intermediate kay-value data stored ?
Define a namenode?
What is a secondary namenode?
How indexing is done in HDFS?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What is a Record Reader in hadoop?
What is the difference between HDFS and NAS ?
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