dev@glassfish.java.net

Re: (QL failure) Issue 6001 has been re-assigned to SQE-Test

From: Amy Roh <Amelia.Roh_at_Sun.COM>
Date: Tue, 09 Sep 2008 15:03:32 -0700

Marina Vatkina wrote:
> Will changing CHANGE event to be an ADD event for an add operation
> stop delivering changed() callbacks to the ConfigListener impls?

ADD event should still deliever ConfigListener.changed() callbacks, only
TYPE will be changed from TYPE.CHANGE to TYPE.ADD.

Amy

>
> If yes, it'll break what Jerome convinced me to be the right thing to
> do for the tx service reconfiguration :(. Tx Service is there always,
> but a property can be added to it.
>
> thanks,
> -marina
>
> Jan Luehe wrote:
>> Kedar,
>>
>> On 09/ 9/08 01:58 PM, Kedar Mhaswade wrote:
>>
>>> Jan,
>>>
>>> Good sleuthing on your part!
>>>
>>> I will take this offline with you (and Jerome), but I think CHANGE
>>> event not at all required in this case on any element. Delivering
>>> a CHANGE event on virtual-server is not optimal because that means
>>> event framework knows about http-listeners attribute on it which
>>> is certainly not desired. CHANGE event on http-service looks extraneous
>>> in this case and looks like a side-effect of the previous ADD. Also
>>> remember that CHANGE is not sent after DELETE!
>>
>>
>> Yes, this inconsistency really suggests that the CHANGE event should not
>> have been delivered at all in this case.
>>
>>> A CHANGE on a given
>>> element invariably should imply change in the value of its attributes
>>> and should not have to do anything with its child elements.
>>>
>>> So, this looks like an oversight.
>>>
>>
>> OK! So, can I assign 6001 to you? :)
>>
>> I'm afraid that adding a sleep to the test will only mask this issue
>> going forward.
>>
>> Thanks,
>>
>> Jan
>>
>>> -Kedar
>>>
>>>
>>> Jan Luehe wrote:
>>>
>>>> During its execution, QL creates a new http-listener on port 1234, and
>>>> then removes it.
>>>>
>>>> I see these dynamic reconfig events, in this order:
>>>>
>>>> HttpService config changed ADD interface
>>>> com.sun.enterprise.config.serverbeans.HttpListener
>>>>
>>>> HttpService config changed CHANGE interface
>>>> com.sun.enterprise.config.serverbeans.HttpService
>>>>
>>>> HttpService config changed REMOVE interface
>>>> com.sun.enterprise.config.serverbeans.HttpListener
>>>> org.glassfish.config.support.GlassFishConfigBean_at_55a58f
>>>>
>>>> I can explain the ADD and REMOVE events (which are related to the
>>>> creation and removal of the new http-listener ("ls123456") on port
>>>> 1234,
>>>> respectively), but I'm not sure about the CHANGE event affecting
>>>> http-service, which causes all http-listeners (except for
>>>> admin-listener), including the one on 8080, to be restarted, which is
>>>> causing the subsequent "connection refused" error because the test
>>>> does not wait long enough for the listener (in this case
>>>> http-listener-1) to have completed its restart before accessing it.
>>>>
>>>> Is the CHANGE event for http-service related to the fact that the new
>>>> http-listener (on port 1234) declares the server with id "server"
>>>> as its
>>>> default-virtual-server, meaning that the "http-listeners" attribute
>>>> of this
>>>> virtual server is updated to include the new http-listener
>>>> ("ls123456"),
>>>> in addition to "http-listener-1" (the listener on port 8080)?
>>>>
>>>> Question to the admin team:
>>>>
>>>> Rather than emitting a CHANGE event for http-service, could this have
>>>> been emitted as a CHANGE event for the virtual-server "server",
>>>> which would
>>>> be more limited in scope and would avoid a restart of all
>>>> http-listeners, and
>>>> ultimately the issue we are seeing?
>>>>
>>>> Thanks,
>>>>
>>>> Jan
>>>>
>>>> On 09/ 9/08 09:42 AM, Jeanfrancois Arcand wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I've just re-assign issue:
>>>>>
>>>>> https://glassfish.dev.java.net/issues/show_bug.cgi?id=6001
>>>>>
>>>>> Can someone from SQE take a look at the issue description. The fix
>>>>> is there :-)
>>>>>
>>>>> A+
>>>>>
>>>>> -- Jeanfrancois
>>>>>
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