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Posted to issues@flink.apache.org by "Etienne Chauchot (Jira)" <ji...@apache.org> on 2025/07/21 10:00:00 UTC

[jira] [Resolved] (FLINK-38042) Warn the user on full table scans

     [ https://issues.apache.org/jira/browse/FLINK-38042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Etienne Chauchot resolved FLINK-38042.
--------------------------------------
    Fix Version/s: cassandra-3.3.0
       Resolution: Fixed

> Warn the user on full table scans
> ---------------------------------
>
>                 Key: FLINK-38042
>                 URL: https://issues.apache.org/jira/browse/FLINK-38042
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / Cassandra
>            Reporter: Etienne Chauchot
>            Assignee: Etienne Chauchot
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: cassandra-3.3.0
>
>
> The Cassandra source connector allows the user to specify a query. This query can contain filters on the provided table. So these filters are pushed down but in some cases, they could lead to inefficient table scans:
> - Filtering on non-indexed, non-key columns (columns members of the primary key)
> - not restricting on partition key leads the cluster to read all the partitions
> We should detect such cases and warn the user.



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