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

["C. Scott Andreas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-8895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

C. Scott Andreas updated CASSANDRA-8895:
----------------------------------------
    Component/s: Compression

> 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: Compression
>            Reporter: Benedict
>            Priority: Major
>              Labels: performance
>             Fix For: 4.x
>
>
> 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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