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https://issues.apache.org/jira/browse/TS-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13710433#comment-13710433
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Alan M. Carroll commented on TS-2035:
-------------------------------------
I can see that this root cause was in fact created by the change in
initialization ordering from 3.0 to 3.2, the same thing as in TS-1487.
> traffic server cores on startup when enabling multiple ports
> ------------------------------------------------------------
>
> Key: TS-2035
> URL: https://issues.apache.org/jira/browse/TS-2035
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.3.4
> Reporter: Bryan Call
> Assignee: Alan M. Carroll
> Fix For: 3.3.5
>
>
> Looks to be a race condition with http_global_hooks being set and the net
> threads are using it.
> (gdb) bt
> #0 0x000000000050abc5 in HttpClientSession::new_connection (
> this=0x2b9d74014e30, new_vc=0x2b9d70015620, backdoor=<value optimized
> out>)
> at HttpClientSession.cc:228
> #1 0x00000000005050ad in HttpAccept::mainEvent (this=0x2da0070,
> event=<value optimized out>, data=0x2b9d70015620) at HttpAccept.cc:73
> #2 0x000000000068335c in UnixNetVConnection::acceptEvent (
> this=0x2b9d70015620, event=1, e=0x2a1de90) at UnixNetVConnection.cc:972
> #3 0x00000000006a237f in EThread::process_event (this=0x2b9d28c0c010,
> e=0x2a1de90, calling_code=1) at UnixEThread.cc:136
> #4 0x00000000006a2efb in insert (this=0x2b9d28c0c010)
> at ../../lib/ts/List.h:201
> #5 insert (this=0x2b9d28c0c010) at ../../lib/ts/List.h:243
> #6 EThread::execute (this=0x2b9d28c0c010) at UnixEThread.cc:205
> #7 0x00000000006a121a in spawn_thread_internal (a=0x28eee30) at Thread.cc:85
> #8 0x00002b9d22c37851 in ?? ()
> #9 0x00002b9d2b02f700 in ?? ()
> #10 0x0000000000000000 in ?? ()
> Adding a printf to the code in HttpClientSession.cc:
> http_global_hooks: (nil)
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