What combiners are and when you should use a combiner in a mapreduce job?
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Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
It can be possible that a Job has 0 reducers?
What is a "reducer" in Hadoop?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
What is the relation between MapReduce and Hive?
How many Reducers run for a MapReduce job?
How to configure the number of the Combiner in MapReduce?
How many Mappers run for a MapReduce job in Hadoop?
How to set mappers and reducers for MapReduce jobs?
What is SequenceFileInputFormat in Hadoop MapReduce?
What are the advantages of using mapreduce with hadoop?
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