How to enable recycle bin or trash in hadoop?
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What if a namenode has no data?
What is high availability in hadoop?
What is compute and Storage nodes?
Are Namenode and job tracker on the same host?
Explain the core components of hadoop?
What happens to a namenode, when job tracker is down?
Explain the use of tasktracker in the hadoop cluster?
What is small file problem in hadoop?
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 Writable & WritableComparable interface?
What is HDFS ? How it is different from traditional file systems?
Can Hadoop be compared to NOSQL database like Cassandra?
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