Can you explain record reader?
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What is partitioning?
Explain the difference between an inputsplit and a block?
Compare Apache Hadoop and Apache Spark?
Why do we need hadoop for big data analytics?
How many datanodes can run on a single Hadoop cluster?
What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
Define a record reader?
What is the block size in Hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
Can we use windows for hadoop?
Name the operating system(s) which are supported for production hadoop deployment?
Why does one remove or add nodes in a Hadoop cluster frequently?
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