Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
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What MapReduce framework consists of?
How can we control particular key should go in a specific reducer?
what is distributed cache in mapreduce framework?
What is the Job interface in MapReduce framework?
How can we assure that the values regarding a particular key goes to the same reducer?
What is the purpose of textinputformat?
What is a RecordReader in Hadoop MapReduce?
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Mention what is the next step after mapper or maptask?
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