What is the purpose of dfsadmin tool?
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explain Metadata in Namenode?
How many Daemon processes run on a Hadoop system?
What is the default block size in hdfs?
What is the best hardware configuration to run Hadoop?
How to enable trash/recycle bin in hadoop?
What is Safemode in Apache Hadoop?
How did you debug your Hadoop code ?
Name the examples of some companies that are using hadoop structure?
What do you know by storage and compute node?
Explain the wordcount implementation via hadoop framework ?
Which are the two types of 'writes' in HDFS?
Explain the use of .mecia class?
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