how can you debug Hadoop code?
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Write a short note on the disadvantages of mapreduce
What is heartbeat in hdfs? Explain.
How many numbers of reducers run in Map-Reduce Job?
How do ‘map’ and ‘reduce’ work?
Is reduce-only job possible in Hadoop MapReduce?
Why comparison of types is important for MapReduce?
What is the difference between RDBMS with Hadoop MapReduce?
When the reducers are are started in a mapreduce job?
What is the purpose of textinputformat?
What is a map side join?
What is an input reader in reference to mapreduce?
what daemons run on a master node and slave nodes?
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