How is HDFS fault tolerant?
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What is Schema on Read and Schema on Write?
Explain the features of stand alone (local) mode?
What is the difference between traditional RDBMS and Hadoop?
On what basis name node distribute blocks across the data nodes?
What is Writable & WritableComparable interface?
What is the purpose of RawComparator interface?
What are the basic available commands in Hadoop sqoop ?
Can we do online transactions(oltp) using hadoop?
Main Components of Hadoop?
What is the main purpose of HDFS fsck command?
Define tasktracker.
Define a namenode?
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