what is meaning Replication factor?
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Did you ever ran into a lop sided job that resulted in out of memory error
Explain the basic difference between traditional rdbms and hadoop?
What is the relation between job and task in hadoop?
How indexing is done in HDFS?
What is a speculative execution in Apache Hadoop MapReduce?
What is partioner in hadoop? Where does it run,mapper or reducer?
What is Safemode in Apache Hadoop?
what are Task Tracker and Job Tracker?
How we can take Hadoop out of Safe Mode?
Define a combiner?
What hadoop does in safe mode?
Define tasktracker.
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