How to debug Hadoop code?
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Which modes can Hadoop be run in? List a few features for each mode?
Explain Erasure Coding in Hadoop?
What daemons run on master nodes?
What are the benefits yarn brings in to hadoop?
What is Mapper in Hadoop?
Can you explain indexing?
What is job tracker in Hadoop?
What are the port numbers of task tracker?
Explain is it possible to search for files using wildcards?
What are the modes in which Hadoop run?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
What did mean by data-node?
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