qpid-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Alan Conway (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-4360) Non-ready HA broker can be incorrectly promoted
Date Fri, 05 Oct 2012 16:00:03 GMT
Alan Conway created QPID-4360:
---------------------------------

             Summary:  Non-ready HA broker can be incorrectly promoted
                 Key: QPID-4360
                 URL: https://issues.apache.org/jira/browse/QPID-4360
             Project: Qpid
          Issue Type: Bug
          Components: C++ Clustering
    Affects Versions: 0.18
            Reporter: Alan Conway
            Assignee: Alan Conway


Description of problem:
rgmanager can promote a non-ready backup HA broker to primary when other backup brokers are
available in the ready state.  This can result in loss of messages and broker configuration.
 Additionally, this can cause the previously ready backups to throw exceptions when connecting
to the new primary:

Sep 20 10:17:18 itcm12 qpidd[10871]: 2012-09-20 10:17:18 [HA] critical Backup queue Queue1:
Replication failed: Invalid position move, preceeds messages
Sep 20 10:17:18 itcm12 qpidd[10871]: 2012-09-20 10:17:18 [Protocol] error Unexpected exception:
Invalid position move, preceeds messages
Sep 20 10:17:18 itcm12 qpidd[10871]: 2012-09-20 10:17:18 [Broker] error Connection 10.3.100.12:43837-10.3.100.105:9006
closed by error: Invalid position move, preceeds messages(501)

Version-Release number of selected component (if applicable):
Qpid 0.18

How reproducible:
100%

Steps to Reproduce:
1. Start a primary and backup broker
2. Inject messages into the primary and ensure messages replicate to backup
3. Restart the primary broker and manually re-promote to primary
  
Actual results:
Restarted broker becomes primary

Expected results:
Restarted broker refuses to become primary since at least one ready backup was discovered
within some timeout

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@qpid.apache.org
For additional commands, e-mail: dev-help@qpid.apache.org


Mime
View raw message