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https://issues.apache.org/jira/browse/SOLR-16720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17726663#comment-17726663
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ASF subversion and git services commented on SOLR-16720:
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Commit 84edb7bb4579ce5caec742b7bf3c8d8ebfef035d in solr's branch
refs/heads/main from Alex Deparvu
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=84edb7bb457 ]
SOLR-16720: Defer PKI header creation to send-time (#1666)
> 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: 1h 10m
> 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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