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https://issues.apache.org/jira/browse/DISPATCH-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17384303#comment-17384303
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ASF subversion and git services commented on DISPATCH-2204:
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Commit e730673d4ab3f71720a9e4295b06239950bc9456 in qpid-dispatch's branch 
refs/heads/main from Jiri Daněk
[ https://gitbox.apache.org/repos/asf?p=qpid-dispatch.git;h=e730673 ]

DISPATCH-2204 Fix "dictionary changed size during iteration" errors (#1305)



> RuntimeError: dictionary changed size during iteration
> ------------------------------------------------------
>
>                 Key: DISPATCH-2204
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-2204
>             Project: Qpid Dispatch
>          Issue Type: Bug
>    Affects Versions: 1.17.0
>            Reporter: Jiri Daněk
>            Assignee: Jiri Daněk
>            Priority: Critical
>             Fix For: 1.17.0
>
>
> {noformat}
> 76: 2021-07-19 17:04:43.292681 +0200 ROUTER_CORE (info) [C2][L44] Link lost: 
> del=0 presett=0 psdrop=0 acc=0 rej=0 rel=0 mod=0 delay1=0 delay10=0 blocked=no
> 76: 2021-07-19 17:04:43.293219 +0200 ROUTER_CORE (info) [C2] Connection Closed
> 76: 2021-07-19 17:04:43.294760 +0200 ROUTER_LS (info) Link to Neighbor Router 
> Lost - link_tag=1
> 76: 2021-07-19 17:04:44.421914 +0200 SERVER (info) [C3] Connection to 
> 127.0.0.1:44841 failed: proton:io Connection refused - disconnected 
> 127.0.0.1:44841
> 76: 2021-07-19 17:04:46.284452 +0200 ROUTER (error) Exception in timer 
> processing
> 76: Traceback (most recent call last):
> 76:   File 
> "/home/jdanek/repos/qpid/qpid-dispatch/python/qpid_dispatch_internal/router/engine.py",
>  line 121, in handleTimerTick
> 76:     self.hello_protocol.tick(now)
> 76:   File 
> "/home/jdanek/repos/qpid/qpid-dispatch/python/qpid_dispatch_internal/router/hello.py",
>  line 41, in tick
> 76:     self._expire_hellos(now)
> 76:   File 
> "/home/jdanek/repos/qpid/qpid-dispatch/python/qpid_dispatch_internal/router/hello.py",
>  line 64, in _expire_hellos
> 76:     for key, last_seen in self.hellos.items():
> 76: RuntimeError: dictionary changed size during iteration
> {noformat}



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