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https://issues.apache.org/jira/browse/DISPATCH-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16424352#comment-16424352
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ASF GitHub Bot commented on DISPATCH-952:
-----------------------------------------
Github user alanconway commented on the issue:
https://github.com/apache/qpid-dispatch/pull/274
Why not simply make single-session the default and (for now) only
behaviour? I can't see any benefit to multiple sessions, in particular not
session-per-link - AMQP is designed on the assumption of many links per
session. So why leave this unhelpful behaviour lying around? If there's some
future use case that requires it we can add it then, when we have some context
where it is useful.
> qdrouterd seg fault after reporting "too many sessions"
> -------------------------------------------------------
>
> Key: DISPATCH-952
> URL: https://issues.apache.org/jira/browse/DISPATCH-952
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Container
> Reporter: Alan Conway
> Assignee: Ganesh Murthy
> Priority: Major
> Fix For: 1.1.0
>
>
> Reported at [https://bugzilla.redhat.com/show_bug.cgi?id=1561876]
>
> {code:java}
> Currently running Satellite 6.3 with 5K clients. The clients are managed by 2
> capsules:
> Capsule 1: 3K clients
> Capsule 2: 2K clients
> Logs from Capsule 1:
> [root@c02-h10-r620-vm1 ~]# journalctl | grep qdrouterd
> Mar 26 03:00:47 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> groupadd[19140]: group added to /etc/group: name=qdrouterd, GID=993
> Mar 26 03:00:47 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> groupadd[19140]: group added to /etc/gshadow: name=qdrouterd
> Mar 26 03:00:47 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> groupadd[19140]: new group: name=qdrouterd, GID=993
> Mar 26 03:00:47 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> useradd[19145]: new user: name=qdrouterd, UID=996, GID=993,
> home=/var/lib/qdrouterd, shell=/sbin/nologin
> Mar 28 10:39:06 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> qdrouterd[16084]: [0x7fe3f0016aa0]:pn_session: too many sessions: 32768
> channel_max is 32767
> Mar 28 10:39:06 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com kernel:
> qdrouterd[16087]: segfault at 88 ip 00007fe40b79d820 sp 00007fe3fd5f9298
> error 6 in libqpid-proton.so.10.0.0[7fe40b77f000+4b000]
> Mar 28 10:39:07 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> systemd[1]: qdrouterd.service: main process exited, code=killed,
> status=11/SEGV
> Mar 28 10:39:07 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> systemd[1]: Unit qdrouterd.service entered failed state.
> Mar 28 10:39:07 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> systemd[1]: qdrouterd.service failed.
> Mar 29 01:02:09 c02-h10-r620-vm1.rdu.openstack.engineering.redhat.com
> /usr/sbin/katello-service[1740]: *** status failed: qdrouterd ***
> Logs from Capsule 2:
> [root@c02-h10-r620-vm2 ~]# systemctl status qdrouterd
> ● qdrouterd.service - Qpid Dispatch router daemon
> Loaded: loaded (/usr/lib/systemd/system/qdrouterd.service; enabled; vendor
> preset: disabled)
> Drop-In: /etc/systemd/system/qdrouterd.service.d
> └─limits.conf
> Active: failed (Result: signal) since Wed 2018-03-28 10:58:02 EDT; 14h ago
> Process: 1158 ExecStart=/usr/sbin/qdrouterd -c
> /etc/qpid-dispatch/qdrouterd.conf (code=killed, signal=SEGV)
> Main PID: 1158 (code=killed, signal=SEGV)
> Mar 28 07:38:46 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> systemd[1]: Started Qpid Dispatch router daemon.
> Mar 28 07:38:46 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> systemd[1]: Starting Qpid Dispatch router daemon...
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> qdrouterd[1158]: [0x7f36a000a170]:unable to find an open available channel
> within limit of 32767
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> qdrouterd[1158]: [0x7f36a000a170]:process error -2
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> qdrouterd[1158]: [0x7f36a000a170]:pn_session: too many sessions: 32768
> channel_max is 32767
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> systemd[1]: qdrouterd.service: main process exited, code=killed,
> status=11/SEGV
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> systemd[1]: Unit qdrouterd.service entered failed state.
> Mar 28 10:58:02 c02-h10-r620-vm2.rdu.openstack.engineering.redhat.com
> systemd[1]: qdrouterd.service failed.
> {code}
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