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Posted to dev@qpid.apache.org by "Fernando Giorgetti (JIRA)" <ji...@apache.org> on 2018/11/19 21:39:00 UTC
[jira] [Updated] (DISPATCH-1188) Credits never dropping to 0 when
using multicast addresses in senders connected to edge routers
[ https://issues.apache.org/jira/browse/DISPATCH-1188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fernando Giorgetti updated DISPATCH-1188:
-----------------------------------------
Description:
{{I have observed a strange behavior when exchanging multicast messages in a topology with multiple interior/edge routers.}}
{{ }}
{{ My topology is designed as:}}
{{ }}
{{ [ Interior 1 ] -> [ Interior 2 ] -> [ Interior 3 ]}}
{{ /\ /\ /\}}
{{ [ Edge 1 ] [ Edge 2 ] [ Edge 3 ]}}
{{ }}
{{ }}
{{ My manual test is attempting to perform the following:}}
* Connect a receiver to any of the routers and starts receiving from a multicast address, like: "multicast.addr1"
* The receiver will close after receiving 1000 messages
* Next I am connecting a sender to any router and start sending messages to that same multicast address, i.e.: "multicast.addr1"
* Sender will continue sending messages until credit drops to 0 (after receiver has disconnected), then it will be closed
What I noticed was:
* If my receiver is connected to "Interior 1", received 1000 messages and closed its connection, then senders connected to: "Interior 1", "Interior 2", "Interior 3" or "Edge 1" will see credits dropping to zero
* But if the sender is connected to another edge router, like "Edge 2" or "Edge 3", then credit never drops to zero (minimum I observed was 1)
Using anycast, credits are dropping to 0 across all routers in the network.
was:
I have observed a strange behavior when exchanging multicast messages in a topology with multiple interior/edge routers.
My topology is designed as:
[ Interior 1 ] -> [ Interior 2 ] -> [ Interior 3 ]
/\ /\ /\
[ Edge 1 ] [ Edge 2 ] [ Edge 3 ]
My manual test is attempting to perform the following:
* Connect a receiver to any of the routers and starts receiving from a multicast address, like: "multicast.addr1"
* The receiver will close after receiving 1000 messages
* Next I am connecting a sender to any router and start sending messages to that same multicast address, i.e.: "multicast.addr1"
* Sender will continue sending messages until credit drops to 0 (after receiver has disconnected), then it will be closed
What I noticed was:
* If my receiver is connected to "Interior 1", received 1000 messages and closed its connection, then senders connected to: "Interior 1", "Interior 2", "Interior 3" or "Edge 1" will see credits dropping to zero
* But if the sender is connected to another edge router, like "Edge 2" or "Edge 3", then credit never drops to zero (minimum I observed was 1)
Using anycast, credits are dropping to 0 across all routers in the network.
> Credits never dropping to 0 when using multicast addresses in senders connected to edge routers
> -----------------------------------------------------------------------------------------------
>
> Key: DISPATCH-1188
> URL: https://issues.apache.org/jira/browse/DISPATCH-1188
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Routing Engine
> Reporter: Fernando Giorgetti
> Priority: Major
>
> {{I have observed a strange behavior when exchanging multicast messages in a topology with multiple interior/edge routers.}}
> {{ }}
> {{ My topology is designed as:}}
> {{ }}
> {{ [ Interior 1 ] -> [ Interior 2 ] -> [ Interior 3 ]}}
> {{ /\ /\ /\}}
> {{ [ Edge 1 ] [ Edge 2 ] [ Edge 3 ]}}
> {{ }}
> {{ }}
> {{ My manual test is attempting to perform the following:}}
> * Connect a receiver to any of the routers and starts receiving from a multicast address, like: "multicast.addr1"
> * The receiver will close after receiving 1000 messages
> * Next I am connecting a sender to any router and start sending messages to that same multicast address, i.e.: "multicast.addr1"
> * Sender will continue sending messages until credit drops to 0 (after receiver has disconnected), then it will be closed
>
> What I noticed was:
> * If my receiver is connected to "Interior 1", received 1000 messages and closed its connection, then senders connected to: "Interior 1", "Interior 2", "Interior 3" or "Edge 1" will see credits dropping to zero
> * But if the sender is connected to another edge router, like "Edge 2" or "Edge 3", then credit never drops to zero (minimum I observed was 1)
>
> Using anycast, credits are dropping to 0 across all routers in the network.
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