What is zookeeper in hadoop?
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What are the network requirements for using hadoop?
How the HDFS Blocks are replicated?
What is InputSplit and RecordReader?
What stored in HDFS?
What are combiners and its purpose?
Where is the Mapper Output stored?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
How we can change Replication factor when Data is on the fly?
What is the difference between HDFS and NAS ?
Can Hadoop be compared to NOSQL database like Cassandra?
What is a Task instance in Hadoop? Where does it run?1
How we can take Hadoop out of Safe Mode?
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