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Posted to commits@cassandra.apache.org by "Benedict (JIRA)" <ji...@apache.org> on 2015/03/03 16:08:04 UTC

[jira] [Created] (CASSANDRA-8896) Investigate upstream changes to compressors to fit contents exactly to one page

Benedict created CASSANDRA-8896:
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             Summary: Investigate upstream changes to compressors to fit contents exactly to one page
                 Key: CASSANDRA-8896
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8896
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Benedict


For optimal disk performance, it makes most sense to choose our compression boundaries based on compressed size, not uncompressed. If our compressors could take a target length, and return the number of source bytes they managed to fit into that space, this would permit us to lower the number of disk accesses per read. [~blambov]: you've dived into LZ4. How tricky do you think this might be?



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