Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
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What is the difference between Job and Task in MapReduce?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What is Mapper in Hadoop MapReduce?
What is the data storage component used by Hadoop?
Is it possible to split 100 lines of input as a single split in MapReduce?
Explain about the basic parameters of mapper and reducer function
What is the Reducer used for?
What are the various configuration parameters required to run a mapreduce job?
What combiners are and when you should use a combiner in a mapreduce job?
What is difference between an input split and hdfs block?
How do reducers communicate with each other?
Why can aggregation not be done in Mapper in MapReduce?