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https://issues.apache.org/jira/browse/SOLR-16720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17709680#comment-17709680
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Kevin Risden commented on SOLR-16720:
-------------------------------------
Specifically looking at
org.apache.solr.security.jwt.JWTAuthPluginIntegrationTest.testMetrics - There
is a big spike since April 5th when this was merged.
There is a change of passThrough=4 -> passThrough=2 which idk exactly what that
means but there are 2 fewer requests. This seems to potentially make sense with
this change.
> PKI should decorate outgoing requests at "sending", not "enqueueing" time
> -------------------------------------------------------------------------
>
> Key: SOLR-16720
> URL: https://issues.apache.org/jira/browse/SOLR-16720
> Project: Solr
> Issue Type: Improvement
> Components: Authentication
> Affects Versions: 9.2
> Reporter: Jason Gerlowski
> Priority: Minor
> Attachments: SOLR-16720-reproduce.patch, Screen Shot 2023-04-07 at
> 9.16.30 AM.png, reproduce.sh
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, PKIAuthenticationPlugin decorates intra-node requests using an
> 'onQueue' lifecycle hook, which is triggered when the request is enqueued for
> processing by the (asynchronous) Jetty http client.
> This works great on many systems. However on heavily loaded clusters the
> time between Jetty "queueing" the request and it actually being sent out can
> be non-negligible. If this gap becomes wide enough, the TTL encoded into the
> PKI auth header might have substantially or fully expired by the time the
> receiving node gets the request.
> We should experiment with moving PKI header decoration to the 'onBegin' hook
> instead, which fires much closer to the actual request-send time on heavily
> loaded servers.
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