How to configure hadoop to reuse JVM for mappers?
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How will you make changes to the default configuration files?
Explain how can we change the split size if our commodity hardware has less storage space?
Did you ever ran into a lop sided job that resulted in out of memory error
Which one is default InputFormat in Hadoop ?
What if a namenode has no data?
What is the Use of SSH in Hadoop ?
What do the master class and the output class do?
What is the InputFormat ?
Can hbase run without hadoop?
What is the purpose of DataNode block scanner?
Can the balancer be run while Hadoop is in use?
What is keyvaluetextinputformat?
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