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From John Sanda <john.sa...@gmail.com>
Subject reads and compression
Date Fri, 29 Nov 2013 01:09:42 GMT
This article[1] cites gains in read performance can be achieved when
compression is enabled. The more I thought about it, even after reading the
DataStax docs about reads[2], I realized I do not understand how
compression improves read performance. Can someone provide some details on
this?

Is the compression offsets map still used if compression is disabled for a
table? If so what is its rate of growth like as compared to the growth of
the map when compression is enabled?

[1] whats-new-in-cassandra-1-0-compression<http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-compression>
[2] about reads<http://www.datastax.com/documentation/cassandra/1.2/webhelp/index.html?pagename=docs&version=1.2&file=index#cassandra/dml/dml_about_reads_c.html>

Thanks

- John

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