C. Scott Andreas updated CASSANDRA-5912:
    Component/s: CQL

> Optimize listing partition keys
> -------------------------------
>                 Key: CASSANDRA-5912
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5912
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Sylvain Lebresne
>            Assignee: Suresh
>            Priority: Minor
> That's a small followup to optimize the DISTINCT support added by 
> CASSANDRA-4536 if we feel like it's worth it.
> Quoting the initial ticket: it should be possible to optimize that further if 
> we consider it worth it by adding a 1 bit per key info in the sstable index 
> saying 'is there at least one live column for that key in that sstable' (we 
> could even add that bit-per-key without augmenting the on-disk index size if 
> we want to by using the first bit of the key position (since we use it as a 
> signed long and thus the first bit is unused)).

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org
For additional commands, e-mail: commits-h...@cassandra.apache.org

Reply via email to