qpid-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Shan Wang <Shan.W...@igindex.co.uk>
Subject An ill borker brings down the whole cluster
Date Tue, 03 Nov 2009 11:13:30 GMT
Hi All,

We have two qpid 0.5 brokers running in cluster mode on two different boxes. The cluster works
fine in normal cases, ie, if broker1 is shutdown cleanly, broker2 will keep on serving clients.
But today we found one broker suddenly lost response to all connected clients and admin tools.
All producer and consumer clients are still connected but failed to consume any messages from
the queue. The command line admin tool failed with a time out error. The only error message
we found is in the log of broker 1, which said this:

2009-oct-31 10:17:49 error channel error 157487219 on
transport-busy: Channel 1 already attached to guest@QPID.amq.failover676a76fa-56
64-4e49-9bee-0538532fe261 (qpid/amqp_0_10/SessionHandler.cpp:150) (unresolved: )

After only restarted broker 1, everything starts to work again. So surprisingly it seems when
one of the brokers in the cluster suffered a problem, the whole cluster just stalled, at least
from the consumer's point of view ( I can't be sure if the producer was working during the
down time, after back to normal, consumer did receive messages sent sometime ago ). Consumer
program uses FailoverManager and AsyncSession, basically not far from the failover example
in the qpid developing doc. So can anyone please tell me what the above error message means
and have we seen similar problems to the cluster before?


The information contained in this email is strictly confidential and for the use of the addressee
only, unless otherwise indicated. If you are not the intended recipient, please do not read,
copy, use or disclose to others this message or any attachment. Please also notify the sender
by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email
and any copies of it. Opinions, conclusions (etc.) that do not relate to the official business
of this company shall be understood as neither given nor endorsed by it. IG Index Ltd is a
company registered in England and Wales under number 01190902. VAT registration number 761
2978 07. Registered Office: Friars House, 157-168 Blackfriars Road, London SE1 8EZ. Authorised
and regulated by the Financial Services Authority. FSA Register number 114059.

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message