What is a “Distributed Cache” in Apache Hadoop?
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What is the heartbeat used for?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
What is formatting of the dfs?
What is Disk Balancer in Apache Hadoop?
What stored in HDFS?
Explain the wordcount implementation via hadoop framework ?
what is meaning Replication factor?
Define a daemon?
Explain why do we need hadoop?
On what basis Namenode will decide which datanode to write on?
What exactly is hadoop?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
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