Mention Hadoop core components?
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What is heartbeat in hdfs?
How to specify more than one directory as input in the Hadoop MapReduce Program?
What do sorting and shuffling do?
Why MapReduce uses the key-value pair to process the data?
what job does the conf class do?
What is MapReduce in Hadoop?
Explain the Reducer's Sort phase?
In MapReduce how to change the name of the output file from part-r-00000?
How does MapReduce framework view its input internally?
Explain about the partitioning, shuffle and sort phase
Can we set the number of reducers to zero in MapReduce?
In Hadoop, which file controls reporting in Hadoop?
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