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Posted to commits@cassandra.apache.org by "Benedict (JIRA)" <ji...@apache.org> on 2015/03/03 16:05:04 UTC

[jira] [Created] (CASSANDRA-8895) Compressed sstables should only compress if the win is above a certain threshold, and should use a variable block size

Benedict created CASSANDRA-8895:
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             Summary: Compressed sstables should only compress if the win is above a certain threshold, and should use a variable block size
                 Key: CASSANDRA-8895
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8895
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Benedict
            Assignee: Benedict
             Fix For: 3.0


On performing a flush to disk, we should assess if the data we're flushing will actually be substantively compressed, and how large the page should be to get optimal compression ratio versus read latency. Decompressing 64Kb chunks is wasteful when reading small records.



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