Why are the number of splits equal to the number of maps?
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What is version-id mismatch error in hadoop?
Name the various types of lists supported by bootstrap.
What is HDFS High Availability?
What is the purpose of dfsadmin tool?
What is the meaning of speculative execution in Hadoop? Why is it important?
Define a commodity hardware? Does commodity hardware include ram?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What is a block and block scanner in HDFS?
What is cloudera and why it is used?
What are the basic available commands in Hadoop sqoop ?
What is the difference between Apache Hadoop and RDBMS?
How the HDFS Blocks are replicated?