What are the most commonly defined input formats in Hadoop?
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What is a secondary namenode?
What is the meaning of speculative execution in Hadoop? Why is it important?
Can we have multiple entries in the master files?
Explain the hadoop-core configuration?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
Explain a simple Map/Reduce problem.
Which files are used by the startup and shutdown commands?
What is small file problem in hadoop?
Define streaming access?
what is meaning Replication factor?
What is version-id mismatch error in hadoop?
Is map like a pointer?
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