What is your favourite tool in the hadoop ecosystem?
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What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What are the default configuration files that are used in hadoop?
What are the most commonly defined input formats in Hadoop?
What is a checkpoint?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Explain use cases where SequenceFile class can be a good fit?
How can we change the split size if our commodity hardware has less storage space?
Is hadoop open source?
How to write a Custom Key Class?
What happens to a NameNode that has no data?
What is Writable & WritableComparable interface?
What is a Combiner?