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what is a sequence file in Hadoop?
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What is Output Format in MapReduce?
What is the need of MapReduce in Hadoop?
When should you use sequencefileinputformat?
What is partitioner and its usage?
What are the benefits of Spark over MapReduce?
What is a MapReduce Combiner?
How much space will the split occupy in Mapreduce?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
It can be possible that a Job has 0 reducers?
What are ‘reduces’?
If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?
How many InputSplits is made by a Hadoop Framework?
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