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Posted to commits@cassandra.apache.org by "Stefan Miklosovic (Jira)" <ji...@apache.org> on 2025/10/31 13:23:00 UTC

[jira] [Commented] (CASSANDRA-20942) Enhance traincompressiondictionary command with sampling and scope Options

    [ https://issues.apache.org/jira/browse/CASSANDRA-20942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18034405#comment-18034405 ] 

Stefan Miklosovic commented on CASSANDRA-20942:
-----------------------------------------------

How would this work when a SSTable using local dictionary is streamed around the cluster eventually?

> Enhance traincompressiondictionary command with sampling and scope Options
> --------------------------------------------------------------------------
>
>                 Key: CASSANDRA-20942
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20942
>             Project: Apache Cassandra
>          Issue Type: Improvement
>            Reporter: Yifan Cai
>            Assignee: Yifan Cai
>            Priority: Normal
>
> Extend the traincompressiondictionary nodetool command to include:
>  * Support for multiple sampling strategies.
>  * '--global' and '--local' options to define dictionary availability scope:
>  ** Global (default): Store in system_distributed.compression_dictionaries and make available cluster-wide.
>  ** Local: Restrict dictionary availability to the current node, when dictionary from local data is desired.



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