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https://issues.apache.org/jira/browse/CASSANDRA-20885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated CASSANDRA-20885:
--------------------------------------------
Description:
When we have an audit enabled for DDL/LOGIN events (and it is disabled for DML)
we have an overhead for BATCH operations (0.75% of CPU usage in a real business
workload), when we build a BATCH audit event to check that it is not in scope
of audit and throw it away
!image-2025-09-04-13-52-19-490.png|width=600!
{code:java}
UUID batchId = UUID.randomUUID();
String queryString = String.format("BatchId:[%s] - BATCH of [%d] statements",
batchId, statements.size()); {code}
was:
When we have an audit enabled for DDL/LOGIN events (and it is disabled for DML)
we have an overhead for BATCH operations (0.75% of CPU usage in a real business
workload), when we build an audit event for them to throw it away after it.
!image-2025-09-04-13-52-19-490.png|width=600!
{code:java}
UUID batchId = UUID.randomUUID();
String queryString = String.format("BatchId:[%s] - BATCH of [%d] statements",
batchId, statements.size()); {code}
> Optimize org.apache.cassandra.audit.AuditLogManager#batchSuccess
> ----------------------------------------------------------------
>
> Key: CASSANDRA-20885
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20885
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: CQL/Interpreter
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Attachments: audit_batch_perf.patch, image-2025-09-04-13-52-19-490.png
>
>
> When we have an audit enabled for DDL/LOGIN events (and it is disabled for
> DML) we have an overhead for BATCH operations (0.75% of CPU usage in a real
> business workload), when we build a BATCH audit event to check that it is not
> in scope of audit and throw it away
> !image-2025-09-04-13-52-19-490.png|width=600!
>
> {code:java}
> UUID batchId = UUID.randomUUID();
> String queryString = String.format("BatchId:[%s] - BATCH of [%d] statements",
> batchId, statements.size()); {code}
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