How to write a Custom Key Class?
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Explain the shuffle?
What are channel selectors?
Give the use of the bootstrap panel.
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What is HDFS - Hadoop Distributed File System?
What is the purpose of dfsadmin tool?
Where is the Mapper Output intermediate kay-value data stored ?
On What concept the Hadoop framework works?
What is the communication channel between client and namenode/datanode?
What is inputformat in hadoop?
What's the best way to copy files between HDFS clusters?
what is the typical block size of an HDFS block?
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