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https://issues.apache.org/jira/browse/CASSANDRA-15177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Tunnicliffe updated CASSANDRA-15177:
----------------------------------------
Severity: Normal
Complexity: Normal
Discovered By: New Unit Test
Bug Category: Parent values: Degradation(12984)Level 1 values: Performance
Bug/Regression(12997)
Component/s: (was: Legacy/Local Write-Read Paths)
Status: Open (was: Triage Needed)
> Reloading of auth caches happens on the calling thread
> ------------------------------------------------------
>
> Key: CASSANDRA-15177
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15177
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/Authorization
> Reporter: Sam Tunnicliffe
> Priority: Normal
>
> When Guava caches were replaced by their Caffeine equivalents in
> CASSANDRA-10855, the async reloading of stale AuthCache entries was lost due
> to the use of {{MoreExecutors.directExecutor()}} to provide the delegate
> executor. Under normal conditions, we can expect these operations to be
> relatively expensive, and in failure scenarios where replicas for the auth
> data are DOWN this will greatly increase latency, so they shouldn’t be done
> on threads servicing requests.
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