What is a block and block scanner in HDFS?
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What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
Explain the basic difference between traditional rdbms and hadoop?
How would you tackle counting words in several text documents?
What are combiners and its purpose?
What is safe mode in Hadoop?
What are the hadoop's three configuration files?
Can the balancer be run while Hadoop is in use?
What do you mean by taskinstance?
What is HDFS ? How it is different from traditional file systems?
How you can contact your client everyday ?
What is Disk Balancer in Apache Hadoop?
Define a commodity hardware? Does commodity hardware include ram?
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