What is heartbeat in hdfs?
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Why is Apache Spark faster than Hadoop MapReduce?
With the help of two examples name the map and reduce function purpose
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
What is Data Locality in Hadoop?
Define Writable data types in Hadoop MapReduce?
Different ways of debugging a job in MapReduce?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
Why can aggregation not be done in Mapper in MapReduce?
How many Reducers run for a MapReduce job?
Mention Hadoop core components?
Explain what does the conf.setMapper Class do in MapReduce?
In MapReduce how to change the name of the output file from part-r-00000?
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