How can you set an arbitrary number of mappers to be created for a job in Hadoop?
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Why is checkpointing important in hadoop?
What daemons run on master nodes?
When should be hadoop archive create?
Can you explain the common input formats in hadoop?
Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?
What is Small File Problem in Hadoop? How can it be resolved?
What are the benefits yarn brings in to hadoop?
Can we create a hadoop cluster from scratch?
What is 'jps'?
What is data cleansing?
How many job tracker processes can run on a single Hadoop cluster?
Which database is used in hadoop?
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