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Posted to commits@cassandra.apache.org by "Mike Adamson (Jira)" <ji...@apache.org> on 2023/08/01 12:25:00 UTC

[jira] [Updated] (CASSANDRA-18673) Reduce size of per-SSTable index components

     [ https://issues.apache.org/jira/browse/CASSANDRA-18673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Adamson updated CASSANDRA-18673:
-------------------------------------
    Source Control Link: https://github.com/apache/cassandra/pull/2540  (was: https://github.com/apache/cassandra/pull/2498)

> Reduce size of per-SSTable index components
> -------------------------------------------
>
>                 Key: CASSANDRA-18673
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18673
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Feature/SAI
>            Reporter: Mike Adamson
>            Assignee: Mike Adamson
>            Priority: Urgent
>          Time Spent: 6.5h
>  Remaining Estimate: 0h
>
> The current per-SSTable index components are large because the primary keys that are stored in them include the token as part of the byte comparable. The byte comparable puts the token first meaning that we get very little prefix compression from either the trie or the sorted terms store. 
> We can fix this by removing the token from the primary key serialization. This would allow us to get the prefix compression from the trie and the sorted terms store.



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