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https://issues.apache.org/jira/browse/DISPATCH-1463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16962003#comment-16962003
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ASF GitHub Bot commented on DISPATCH-1463:
------------------------------------------
ted-ross commented on pull request #600: DISPATCH-1463 - Add detection for
stuck deliveries
URL: https://github.com/apache/qpid-dispatch/pull/600#discussion_r340068152
##########
File path: python/qpid_dispatch/management/qdrouter.json
##########
@@ -570,6 +570,11 @@
"graph": true,
"description": "The total number of settled deliveries
that were held in the router for more than 10 seconds."
},
+ "deliveriesStuck": {
+ "type": "integer",
+ "graph": true,
+ "description": "The current number of deliveries that are
unsettled and have been held in the router for more than 10 seconds."
+ },
Review comment:
Do we need this? INFO logs are issued when a link has stuck deliveries and
the count is available through the prometheus-format scraper.
Since this is more of a gauge than a counter, having a peak value might be
appropriate. Would it also require a way to be reset?
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> Detect deliveries that are stuck in the router for a long time
> --------------------------------------------------------------
>
> Key: DISPATCH-1463
> URL: https://issues.apache.org/jira/browse/DISPATCH-1463
> Project: Qpid Dispatch
> Issue Type: New Feature
> Components: Router Node
> Reporter: Ted Ross
> Assignee: Ted Ross
> Priority: Major
> Fix For: 1.10.0
>
>
> The delayed-delivery counts are limited in that they only count deliveries
> that have been settled. These counters do not count deliveries that are
> currently "stuck" and have not been settled.
> This feature provides visibility into the number of stuck deliveries per link
> and per router.
> A new counter "deliveriesStuck" shall be added to the link and router
> entities for per-link and aggregated-per-router respectively.
> A delivery is considered "stuck" when it has been in the undelivered or
> unsettled lists for more than ten seconds and is still not settled. Once a
> stuck delivery is settled or otherwise removed, it is no longer considered
> stuck.
> When a link transitions from zero to one stuck delivery, an INFO log message
> shall be emitted indicating that at least one delivery is stuck on that link.
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