How ordering in hdfs is finished?
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Explain how can you debug hadoop code?
What are the core components of Hadoop?
What is the use of recordreader in hadoop?
What happen if a datanode loses network connection for a few minutes?
What a task tracker is in hadoop?
Which database is used in hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
Do we require two servers for the namenode and the datanodes?
Explain the difference between an inputsplit and a block?
How is the splitting of file invoked in Hadoop ?
What is Mapper? How can we compress Mapper output in Hadoop?
What is KeyValueTextInputFormat in Hadoop?
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