Can we submit the mapreduce job from slave node?
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How does fault tolerance work in mapreduce?
Why can aggregation not be done in Mapper in MapReduce?
how indexing in HDFS is done?
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?
What is Shuffling and Sorting in a MapReduce?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
Clarify what is shuffling in map reduce?
Is reduce-only job possible in Hadoop MapReduce?
What is a distributed cache in mapreduce framework?
Can we submit the mapreduce job from slave node?
What is the default input type in MapReduce?
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