What other technologies have you used in hadoop sta ck?
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What is your favourite tool in the hadoop ecosystem?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
what is a datanode?
What is the use of Combiner?
What do masters consist of?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
Explain how do ‘map’ and ‘reduce’ works?
What hadoop does in safe mode?
What is HDFS High Availability?
What are channel selectors?
Why do we use Hadoop?
How is HDFS fault tolerant?