[jira] [Commented] (CASSANDRA-17021) Enhance Zstd support in Cassandra with dictionaries

["Stefan Miklosovic (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-17021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18018416#comment-18018416 ] 

Stefan Miklosovic commented on CASSANDRA-17021:
-----------------------------------------------

CEP here: https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-54%3A+ZSTD+with+Dictionary+SSTable+Compression

> Enhance Zstd support in Cassandra with dictionaries
> ---------------------------------------------------
>
>                 Key: CASSANDRA-17021
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17021
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Feature/Compression
>            Reporter: Dinesh Joshi
>            Assignee: Yifan Cai
>            Priority: Normal
>
> Currently Cassandra supports zstd compression. However, Zstd also supports dictionaries to enhance not only the compression ratio but also the speed. Dictionaries can show 3-4x savings. We should add support to train dictionaries, ideally per SSTable this will yield the maximum gains.



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