what is a Task Tracker in Hadoop?
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What is OutputCommitter?
What happen if the number of the reducer is 0 in MapReduce?
How many Reducers run for a MapReduce job in Hadoop?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
How to write a custom partitioner for a Hadoop MapReduce job?
How to set mappers and reducers for MapReduce jobs?
Is it important for Hadoop MapReduce jobs to be written in Java?
How does inputsplit in mapreduce determines the record boundaries correctly?
What is heartbeat in hdfs? Explain.
How to create a custom key and custom value in MapReduce Job?
What is a RecordReader in Hadoop MapReduce?
Why can aggregation not be done in Mapper in MapReduce?
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