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https://issues.apache.org/jira/browse/DISPATCH-1136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ganesh Murthy closed DISPATCH-1136.
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> Receiver crash due to data corruption on multicast presettled messages
> ----------------------------------------------------------------------
>
> Key: DISPATCH-1136
> URL: https://issues.apache.org/jira/browse/DISPATCH-1136
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Routing Engine
> Affects Versions: 1.3.0
> Environment: Fedora 27
> Three routers connected serially as described in DISPATCH-1124
>
> Reporter: Chuck Rolke
> Assignee: Chuck Rolke
> Priority: Major
> Fix For: 1.4.0
>
>
> After applying the fixes from DISPATCH-1124 and DISPATCH-1129 receivers in
> long-running multicast presettled tests still fail with corrupted data
> sequences. There is no single symptom but several:
> * Receivers use all system memory and cache and getting hit by the OOM killer
> * underrun
> * illegal value for field
> Research shows that function qdr_forward_drop_presettled_CT_LH is routinely
> dropping presettled deliveries that have already made forward progress in
> transmitting bytes to the wire. After that happens there is a race condition
> as to whether the message is successfully transmitted or the message is torn
> down in the middle of transmission.
> For reproducing this error the sender must supply messages significantly
> faster than the receiving router can forward them to the next router. This
> triggers the presettled drops. My test setup does this by having the sender
> and the receiving router on the same laptop and having the next router
> connected over a relatively slow WiFi.
>
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