How is security achieved in Apache Hadoop?
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Explain InputFormat?
On what basis data will be stored on a rack?
What is yarn in hadoop?
How to enable trash/recycle bin in hadoop?
What is difference between split and block in hadoop?
How is hadoop different from other data processing tools?
Can NameNode and DataNode be a commodity hardware?
what is the default replication factor in HDFS?
Explain the features of fully distributed mode?
What is a Secondary Namenode? Is it a substitute to the Namenode?
Name the examples of some companies that are using hadoop structure?
Is hadoop a memory?
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