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How to enable/configure the compression of map output data in hadoop?
What hadoop does in safe mode?
What is inputformat in hadoop?
Explain how input and output data format of the hadoop framework?
when hadoop enter in safe mode?
How to enable recycle bin or trash in hadoop?
Whats is distributed cache in hadoop?
what should be the ideal replication factor in hadoop?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
How does an hadoop application look like or their basic components?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What are the important differences between apache and hadoop?
What is the difference between rdbms and hadoop?
Define tasktracker.
