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From "Lily Wei (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4819) add error reporting to ReplicationMessageTransmit.java MasterReceiverThread.run()
Date Sat, 19 Feb 2011 03:21:38 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lily Wei updated DERBY-4819:
----------------------------

     Urgency: Normal
    Assignee: Lily Wei
      Labels: derby_triage10_8  (was: )

> add error reporting to ReplicationMessageTransmit.java MasterReceiverThread.run()
> ---------------------------------------------------------------------------------
>
>                 Key: DERBY-4819
>                 URL: https://issues.apache.org/jira/browse/DERBY-4819
>             Project: Derby
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 10.4.2.0, 10.5.3.0, 10.6.1.0, 10.7.1.1
>            Reporter: Kathey Marsden
>            Assignee: Lily Wei
>              Labels: derby_triage10_8
>         Attachments: remove-msgReceiver.diff
>
>
> While working on DERBY-4812, I noticed the following code in MasterReceiverThread,run().
> I am not familiar enough with replication to know if the MasterReceiverThread can recover
from such errors.  If it cannot i think it would better to have a clear failure at the time
of the error than just a subsequent NullPointerException.
> As the todo says, the exceptions should at least be logged.
> Also I just noticed this one bit of code, so don't know if there are similar issues or
TODO's elsewhere in replication code.
>                 } catch (SocketTimeoutException ste) {
>                     // ignore socket timeout on reads
>                 } catch (ClassNotFoundException cnfe) {
>                     // TODO: print problem to log
>                 } catch (IOException ex) {
>                     // TODO: print problem to log
>                     // If we get an exception for this socket, the log shipper
>                     // will clean up. Stop this thread.
>                     stopMessageReceiver = true;
>                     msgReceiver = null;
>                 }
>             }

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