What is Distributed Cache?
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How does master slave architecture in the hadoop?
On what basis name node distribute blocks across the data nodes?
How Mapper is instantiated in a running job?
What is HDFS Block size? How is it different from traditional file system block size?
What is the meaning of speculative execution in Hadoop? Why is it important?
What does /etc /init.d do?
How the Client communicates with HDFS?
What is unstructured data?
Define streaming?
What is InputSplit and RecordReader?
What is the difference between a Hadoop and Relational Database and Nosql?
What is a Secondary Namenode? Is it a substitute to the Namenode?
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