How to compress mapper output in Hadoop?
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More MapReduce Interview Questions
Explain JobConf in MapReduce.
When Namenode is down what happens to job tracker?
What is the Reducer used for?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
For a Hadoop job, how will you write a custom partitioner?
How can we control particular key should go in a specific reducer?
what daemons run on a master node and slave nodes?
What is difference between an input split and hdfs block?
What are advantages of Spark over MapReduce?
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how can you debug Hadoop code?
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