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https://issues.apache.org/jira/browse/CASSANDRA-21589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated CASSANDRA-21589:
--------------------------------------------
Fix Version/s: 6.0-alpha3
7.0
(was: 7.x)
(was: 6.0.x)
Source Control Link:
https://github.com/apache/cassandra/commit/1e865038e8995e9a4568dda8e11f24f2e2a65738
Resolution: Fixed
Status: Resolved (was: Ready to Commit)
> isOrdinaryUser check performed by Guardrail.enabled is expensive
> ----------------------------------------------------------------
>
> Key: CASSANDRA-21589
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21589
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Feature/Guardrails
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 6.0-alpha3, 7.0
>
> Attachments: 21589_after_cpu.html, 21589_before_cpu.html,
> CASSANDRA-21589-6.0_ci_summary.htm,
> CASSANDRA-21589-6.0_results_details.tar.xz,
> CASSANDRA-21589-trunk_ci_summary.htm,
> CASSANDRA-21589-trunk_results_details.tar.xz, cpu-heatmap_write.html,
> image-2026-08-20-16-05-55-487.png
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> We can get like 18% of CPU overhead for this check for a write load if
> authorization is enabled
> [^cpu-heatmap_write.html]
> write test:
> https://issues.apache.org/jira/browse/CASSANDRA-18831?focusedCommentId=18056293&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-18056293
> Guardrails:
> org.apache.cassandra.cql3.RowUpdateBuilder#validateCell -
> columnValueSize/columnTextAndVarcharValueSize
> org.apache.cassandra.cql3.statements.ModificationStatement#validateDiskUsage
> !image-2026-08-20-16-05-55-487.png|width=600!
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