What is HDFS ? How it is different from traditional file systems?
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What is hbase in hadoop?
What is the heartbeat used for?
What is the difference between HDFS and NAS ?
what is meaning Replication factor?
Can you explain how do ‘map’ and ‘reduce’ work?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
Give the use of the bootstrap panel.
On what basis data will be stored on a rack?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
How many JVMs run on a slave node?
What infrastructure do we need to process 100 TB data using Hadoop?
How to resolve small file problem in hdfs?
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