Explain use cases where SequenceFile class can be a good fit?
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what is a datanode?
Mention what are the data components used by Hadoop?
On what basis name node distribute blocks across the data nodes?
Can we have multiple entries in the master files?
Have you ever used Counters in Hadoop. Give us an example scenario?
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What is nlineoutputformat?
What are the default configuration files that are used in hadoop?
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What stored in HDFS?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
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