How blocks are distributed among all data nodes for a particular chunk of data?
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How we can change Replication factor when Data is on the fly?
What will you do when NameNode is down?
What is inputsplit in hadoop? Explain.
What is 'Key value pair' in HDFS?
Is hadoop obsolete?
What do you know about nlineoutputformat?
Have you ever used Counters in Hadoop. Give us an example scenario?
Explain the difference between NameNode
How many maximum jvm can run on a slave node?
What is InputSplit and RecordReader?
What infrastructure do we need to process 100 TB data using Hadoop?
Mention what is the use of Context Object?
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