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From "Robbie Gemmell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (QPID-4289) [Java Client 0-8/0-9.x] Failover functionality sometimes does not restore the connection
Date Sat, 03 Nov 2012 15:21:12 GMT

     [ https://issues.apache.org/jira/browse/QPID-4289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Robbie Gemmell updated QPID-4289:

    Status: Ready To Review  (was: In Progress)
> [Java Client 0-8/0-9.x] Failover functionality sometimes does not restore the connection
> ----------------------------------------------------------------------------------------
>                 Key: QPID-4289
>                 URL: https://issues.apache.org/jira/browse/QPID-4289
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Client
>    Affects Versions: 0.16, 0.18, 0.19
>            Reporter: Alex Rudyy
>            Assignee: Robbie Gemmell
>             Fix For: 0.19
>         Attachments: 0001-QPID-4289-Fix-failover-issues.patch
> Failover functionality on 0-8/0-9.x java client does not restore the connection in the
following scenarios:
> * when on initial establishing of the connectivity the connection object is marked as
closed after not being able to connect to the first brokers from the broker list but at the
end it manages to connect to the one of the following brokers from the broker list
> * there is a racing condition between waking up the connection state waiter and closing
the phisical connection on receiving ConnectionClose command from the broker. As result, waiters
are notified, new connection is created and closed afterwards.
> * on killing the broker when no IOException is thrown from socket input/output streams
but instead -1 is returned by read operation, the failover starts but IoSender thread is left
running. As result, on multiple reconnection attempts the thread resources can be exhausted
and that can potentially result in OOME.

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