What are combiners and its purpose?
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Is it necessary to know java to learn hadoop?
What does the command mapred.job.tracker do?
How is security achieved in Apache Hadoop?
How can you overwrite the replication factors in HDFS?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
What is the difference between hadoop and other data processing tools?
What is small file problem in hadoop?
shouldn't DFS be able to handle large volumes of data already?
What is yarn in hadoop?
What is NoSQL?
How to enable recycle bin in hadoop?
Where is the Mapper Output intermediate kay-value data stored ?