Define a daemon?
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Should we use RAID in Hadoop or not?
How to change replication factor of files already stored in HDFS?
What do you know about sequencefileinputformat?
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?
Can hbase run without hadoop?
Explain Erasure Coding in Apache Hadoop?
What is the process to change the files at arbitrary locations in HDFS?
What is a 'block' in HDFS?
What are the stable versions of Hadoop?
Is hadoop open source?
How to restart Namenode?
What is the default block size in hdfs?
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