Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
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How many numbers of reducers run in Map-Reduce Job?
How to specify more than one directory as input to the MapReduce Job?
When is it not recommended to use MapReduce paradigm for large scale data processing?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What is mapper in map reduce?
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What is a "reducer" in Hadoop?
What is Shuffling and Sorting in a MapReduce?
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What is the Job interface in MapReduce framework?
what is a Task Tracker in Hadoop?
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