Hi Shameera,
I have added logs and tested. Full Log is attached at (
https://drive.google.com/a/wso2.com/file/d/0B57HoxWKqqNnN2FPRE9FeC0yYXM/edit?usp=sharing).
Deactivate of andes service is like follows.
protected void deactivate(ComponentContext ctx) {
// Unregister QpidService
System.out.println("+++++++++++++++++++Started deactivating andes");
System.out.println("++++++++++++Unregistering qpid service");
try {
if (null != qpidService) {
qpidService.unregister();
}
} catch (Exception e) {}
System.out.println("+++++++++++++++++Unregistered qpidService");
// Shutdown the Qpid broker
System.out.println("+++++++++++++++++Shutting down andes");
ApplicationRegistry.remove();
System.out.println("+++++++++++done shutting down andes");
System.out.println("+++++++++++done deactivating of andes
component");
}
+++++++++++++++++++Started deactivating andes
++++++++++++Unregistering qpid service
+++++++++++++++++Unregistered qpidService
+++++++++++++++++Shutting down andes
+++++++++++done shutting down andes
+++++++++++done deactivating of andes component
++++++++++++++++++++started deactivating cassandra
++++++++++++++++++done deactivating cassandra
I have a doubt like is it correct to unregister qpidService before actually
shutting down the broker?
Then I changed the code swapping the order.
protected void deactivate(ComponentContext ctx) {
// Unregister QpidService
// Shutdown the Qpid broker
ApplicationRegistry.remove();
try {
if (null != qpidService) {
qpidService.unregister();
}
} catch (Exception e) {}
}
Still errors happened. Order was as follows.
+++++++++++++++++++Started deactivating andes
+++++++++++++++++++++shutting down andes
+++++++++++done shutting down andes
unregistering qpidservice
+++++++++++++++++Unregistered qpidService
+++++++++++done deactivating of andes component
++++++++++++++++++++started deactivating cassandra
++++++++++++++++++done deactivating cassandra
Pom file has cassandra as a dependency.
<Import-Package>
org.apache.axis2.*;
version="${axis2.osgi.version.range.qpid}",
org.apache.axiom.*;
version="${axiom.osgi.version.range.qpid}",
org.wso2.carbon.andes.authentication.service,
org.wso2.carbon.andes.commons,
org.wso2.carbon.andes.commons.registry,
* org.wso2.carbon.cassandra.server;
version="4.2.2",*
*;resolution:=optional
</Import-Package>
What is going wrong?
Thanks
On Fri, May 2, 2014 at 9:33 AM, Shameera Rathnayaka <[email protected]>wrote:
> Hi HasithaH,
>
> Shall we try with log messages to identify service deactivation and bundle
> undeployment order of andes and cassandra ?
>
> Thanks,
> Shameera.
>
>
> On Fri, May 2, 2014 at 9:18 AM, Hasitha Hiranya <[email protected]> wrote:
>
>> During testing I followed following steps.
>>
>> 1. create a topic subscriber
>> 2. publish 1000 msgs
>> 3. wait until the subscriber get 1000 messages and close
>> 4. now underneath MB will still be leisurely deleting the content of
>> removed messages (with timeouts etc)
>> 5. I shutdown the broker by Ctrl+c
>> 6. Now with my above fixes it will delete all records that needs to be
>> deleted before shutting down.
>>
>> I can see when the code is at step 6 MB is saying cassandra is down.
>> Thus before returning from the Close() of message store (hence before
>> returning from deactivte of andes service), cassandra service get
>> disappeared. It boils down to an OSGI problem.
>>
>> @Shameera,
>>
>> I have the dependency to the cassandra bundle as you have suggested in
>> the andes bundle. But seems there is a problem still. Any idea why that
>> happens?
>>
>>
>> On Thu, May 1, 2014 at 10:56 AM, Hasitha Hiranya <[email protected]>wrote:
>>
>>> Hi,
>>>
>>> Also in order to stop connection to Cassandra gracefully, we need to do
>>> following.
>>>
>>> cluster.getConnectionManager().shutdown();
>>>
>>> Thanks
>>>
>>>
>>> On Thu, May 1, 2014 at 10:52 AM, Hasitha Hiranya <[email protected]>wrote:
>>>
>>>> Hi,
>>>>
>>>> I intend to cleanup graceful shutdown code of WSO2 Message Broker in
>>>> following way. We have to do them as a part of fixing shutdown errors. We
>>>> have managed to keep Cassandra until broker service shutdown properly in
>>>> OSGI env, but we see problems due to lack of these.
>>>>
>>>> 1. When shutting down we have to flush
>>>> all pubSubMessageContentRemoverTasks, meaning we have to delete all acked
>>>> messages for topics, otherwise they will never be removed again (After
>>>> shutting down memory is gone). Concern is we have to wait for timeout for
>>>> those messages to happen, which will cause shutting down of MB on hold
>>>> untill all messages are timed out. For now MB will shut down hoping some
>>>> other node will clear them up.
>>>>
>>>> 2. Above argument goes with content removal tasks as well. Merely
>>>> stopping deletion thread will not help.
>>>>
>>>> 3. above two tasks should be done AFTER stopping queue/topic flusher
>>>> threads.
>>>>
>>>> 4. When shutting down we have to clear in-memory message status (for
>>>> message count to be correct).
>>>>
>>>> 5. We have to copy back NQ messages back to GQ.
>>>>
>>>> 6. Flush message counts.
>>>>
>>>> @pamod,
>>>>
>>>> You have a fix to flush the message count before shutdown (As we update
>>>> it per message chunks). Is it committed? If so, where is the code? It
>>>> should come as point 6.
>>>>
>>>> Apart from point 6 have have done other. Testing now.
>>>>
>>>> Thanks
>>>>
>>>> --
>>>> *Hasitha Abeykoon*
>>>> Software Engineer; WSO2, Inc.; http://wso2.com
>>>> *cell:* *+94 719363063*
>>>> *blog: **abeykoon.blogspot.com* <http://abeykoon.blogspot.com>
>>>>
>>>>
>>>
>>>
>>> --
>>> *Hasitha Abeykoon*
>>> Software Engineer; WSO2, Inc.; http://wso2.com
>>> *cell:* *+94 719363063*
>>> *blog: **abeykoon.blogspot.com* <http://abeykoon.blogspot.com>
>>>
>>>
>>
>>
>> --
>> *Hasitha Abeykoon*
>> Senior Software Engineer; WSO2, Inc.; http://wso2.com
>> *cell:* *+94 719363063*
>> *blog: **abeykoon.blogspot.com* <http://abeykoon.blogspot.com>
>>
>>
>
>
> --
> *Software Engineer - WSO2 Inc.*
> *email: shameera AT wso2.com <[email protected]> , shameera AT apache.org
> <[email protected]>*
> *phone: +9471 922 1454 <%2B9471%20922%201454>*
>
> *Linked in : *http://lk.linkedin.com/pub/shameera-rathnayaka/1a/661/561
> *Twitter : *https://twitter.com/Shameera_R
>
--
*Hasitha Abeykoon*
Senior Software Engineer; WSO2, Inc.; http://wso2.com
*cell:* *+94 719363063*
*blog: **abeykoon.blogspot.com* <http://abeykoon.blogspot.com>
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