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If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
498Post New Hadoop General Questions
What do you think about the speculative execution?
What happens if you don?t override the mapper methods and keep them as it is?
What is the purpose of RecordReader in hadoop?
Why use hadoop?
Is it possible to have hadoop job output in multiple directories?
Is there another way to check whether Namenode is working?
What are the features of Fully-Distributed mode?
If datanodes increase, then do we need to upgrade namenode?
How many daemon processes run on a hadoop cluster?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
How to debug Hadoop code?
What is meant by streaming access?
What are the Hadoop features extended to its eco-system components ?
Which port does SSH work on?
Which object can be used to get the progress of a particular job
