What is purpose of RecordWriter in Hadoop?
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What are the parameters of mappers and reducers?
What is the role of the secondary namenode?
What is Reducer in Hadoop?
Clarify how ordering in hdfs is finished?
In which location name node sores its metadata and why?
Where are hadoop’s configuration files located and list them?
How to use combiner in hadoop ?
Can hadoop replace relational database?
Do we require two servers for the namenode and the datanodes?
What are the features of Pseudo mode?
How can we create a hadoop cluster from scratch?
Can we change the file cached by distributed cache
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