On 03/31/2011 09:33 AM, Kim van der Riet wrote:
The first two errors are store errors; the third is a broker error
related to policy handling (in QueuePolicy.cpp). However, these errors
may be related.
I would be interested in reproducing these errors, can you supply
additional details, including the hardware (ie, how many processors, how
much memory and disk space), OS and version you are using, also if
possible a simple reproducer.
None of these errors should show up during normal usage, and indicate a
possible race condition or logic error.
I think the broker error is caused by the store error plus a bug in the broker:
the queue policy count is incremented before the call to the store, when the
store throws the count is not decremented so its incorrect since the message
didn't actually get on the queue.
On Wed, 2011-03-30 at 17:20 +0400, [email protected] wrote:
Hi there,
I'm using qpid 0.8 and sending only durable messages.
From time to time the following exceptions can occur:
1. Journal "MyQueue": get_events() returned JERR_JCNTL_AIOCMPLWAIT;
wmgr_status: wmgr: pi=29 pc=44 po=0 aer=32 edac:TFFF
ps=[AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA] wrfc: state: Active fcntl[6]: pfid=6
ws=11268 wc=3256 rs=0 rc=0 ec=1282 ac=32
2. Journal "MyQueue": Unexpected I/O response (RHM_IORES_BUSY) on queue
MyQueue
3. error Unexpected exception: Attempted size underflow on dequeue(559):
size: max=104857600, current=119; count: unlimited; type=reject
From the source code I know that
JERR_JCNTL_AIOCMPLWAIT means that "Timeout waiting for AIOs to complete"
RHM_IORES_BUSY means that "Another blocking operation is in progress"
but that all and I can't go any further.
Could you please help to determine what kind of I/O operations can cause
such errors and why they can occur?
Best Regards,
Sergey Zhemzhitsky
Information Technology Division
Troika Dialog, 4, Romanov lane, Moscow 125009, Russia
Phone. +7 495 2580500 ext. 1246
_______________________________________________________
The information contained in this message may be privileged and conf idential
and protected from disclosure. If you are not the original intended recipient,
you are hereby notified that any review, retransmission, dissemination, or
other use of, or taking of any action in reliance upon, this information is
prohibited. If you have received this communication in error, please notify the
sender immediately by replying to this message and delete it from your
computer. Thank you for your cooperation. Troika Dialog, Russia.
If you need assistance please contact our Contact Center (+7495) 258 0500 or
go to www.troika.ru/eng/Contacts/system.wbp
---------------------------------------------------------------------
Apache Qpid - AMQP Messaging Implementation
Project: http://qpid.apache.org
Use/Interact: mailto:[email protected]
---------------------------------------------------------------------
Apache Qpid - AMQP Messaging Implementation
Project: http://qpid.apache.org
Use/Interact: mailto:[email protected]
