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Date and time note was created$= dv.current().file.ctime
Date and time note was modified$= dv.current().file.mtime

Apache Hadoop

Apache Hadoop is an open source software framework for storage and large scale processing of data-sets on clusters(Clusters : groups, here groups of nodes/ computers) of commodity hardware(Commodity hardware in computing is computers or components that are readily available, inexpensive and easily interchangeable with other commodity hardware.(What is commodity hardware?) ).

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