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Posted to commits@cassandra.apache.org by "Caleb Rackliffe (Jira)" <ji...@apache.org> on 2026/09/23 16:36:00 UTC

[jira] [Updated] (CASSANDRA-21478) Add a new guardrail around the number of SSTables per read

     [ https://issues.apache.org/jira/browse/CASSANDRA-21478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Caleb Rackliffe updated CASSANDRA-21478:
----------------------------------------
    Reviewers: Caleb Rackliffe

> Add a new guardrail around the number of SSTables per read
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-21478
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-21478
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Feature/Guardrails
>            Reporter: Caleb Rackliffe
>            Assignee: Shlomit
>            Priority: Normal
>             Fix For: 7.x
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> While there is some prior art on this for SAI, which warns and then fails queries that touch too many SSTable indexes, the normal non-index read path does not have any guardrail for extremely aberrant cases where perhaps compaction falls behind and a small percentage of reads touch hundreds of SSTables. It might be nice for the server to be louder about this.



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