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From: Ashok Kumar [mailto:ashok34...@yahoo.com]
Sent: 21 December 2015 19:18
To: user@hive.apache.org
Subject: Re: Difference between ORC and RC files
Ma
Many thanks Sir. Very useful.
Kindly elaborate why RC files do not have these capabilities. As I see them
they are Row Columnar files. Am I correct to assume that ORC file is basically
an RC file with more optimisation.
Are RC and ORC files designed for columnar format similar to the way a colum
ORC offers a number of features not available in RC files:
* Better encoding of data. Integer values are run length encoded.
Strings and dates are stored in a dictionary (and the resulting pointers
then run length encoded).
* Internal indexes and statistics on the data. This allows for more
