What is high availability in hadoop?
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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 if a namenode has no data?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What is HDFS ? How it is different from traditional file systems?
What does job conf class do?
Explain the core components of hadoop?
Explain the hadoop-core configuration?
What does ‘jps’ command do?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
What infrastructure do we need to process 100 TB data using Hadoop?
What is safe mode in Hadoop?
Is fs.mapr.working.dir a single directory?
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