Explain Erasure Coding in Apache Hadoop?
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What is Partioner in hadoop? Where does it run
Explain what if rack 2 and datanode fails?
What do the master class and the output class do?
What hadoop does in safe mode?
Explain why do we need hadoop?
How is hadoop different from other data processing tools?
Can we do online transactions(oltp) using hadoop?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
How indexing is done in HDFS?
On what basis Namenode will decide which datanode to write on?
Define a commodity hardware? Does commodity hardware include ram?
What are the site-specific configuration files in Hadoop?
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