What is Combiner in Hadoop?
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What is a rack?
What is Mapper in Hadoop?
How can native libraries be included in yarn jobs?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
Explain the common input formats in hadoop?
What are the side effects of not running a secondary name node?
Explain about Hadoop file system and processing framework?
Mention how many inputsplits is made by a hadoop framework?
What are some typical functions of job tracker in hadoop?
What is the default replication factor in Hadoop and how will you change it?
Give examples of some companies that are using Hadoop structure?
What is the job tracker role in hadoop?
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