Can NameNode and DataNode be a commodity hardware?
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Which is the best hadoop certification?
What is difference between split and block in hadoop?
what is a datanode?
What are the problems with Hadoop 1.0?
What is the relation between job and task in hadoop?
Should we use RAID in Hadoop or not?
Is it possible to provide multiple inputs to hadoop? If yes, explain.
shouldn't DFS be able to handle large volumes of data already?
What other technologies have you used in hadoop sta ck?
Which one is default InputFormat in Hadoop ?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What is HDFS High Availability?