Hi All,

WSO2  MB Team is pleased to announce the release of WSO2 Message Broker
3.0.0-Alpha4. You can now download the distribution which is at [1].
Bugs:

   - [MB-676 <https://wso2.org/jira/browse/MB-676>] - Left MB node not
   properly connecting back to the cluster till restart that MB server
   - [MB-1110 <https://wso2.org/jira/browse/MB-1110>] - NPE while
   delivering messages.
   - [MB-1240 <https://wso2.org/jira/browse/MB-1240>] - Cannot publish a
   message from Topic details
   - [MB-1272 <https://wso2.org/jira/browse/MB-1272>] -
   cassandra_system.log file creating should be removed
   - [MB-1284 <https://wso2.org/jira/browse/MB-1284>] - Tenant User cannot
   published or subscribed to a durable topic
   - [MB-1302 <https://wso2.org/jira/browse/MB-1302>] -
   NullPointerException occurred while durable shared subscriber receving
   messages
   - [MB-1308 <https://wso2.org/jira/browse/MB-1308>] - Observed WARN
   {org.wso2.carbon.event.core.internal.topic.registry.RegistryTopicManager} -
   while updating topic permissions
   - [MB-1327 <https://wso2.org/jira/browse/MB-1327>] - Remove critical
   permission requirements when SSL is enabled
   - [MB-1329 <https://wso2.org/jira/browse/MB-1329>] - Exception thrown
   when you try to create a queue with the name of a subscription ID of a
   durable topic
   - [MB-1338 <https://wso2.org/jira/browse/MB-1338>] - [MQTT] Cannot
   disable default mqtt port from broker.xml
   - [MB-1339 <https://wso2.org/jira/browse/MB-1339>] - [MQTT] Cannot
   disable mqtt SSL port from broker.xml
   - [MB-1340 <https://wso2.org/jira/browse/MB-1340>] - When a subscription
   is added to a topic, a temporary role is created with no permission assigned
   - [MB-1341 <https://wso2.org/jira/browse/MB-1341>] - When a topic is
   created by console and when a subscriber is subscribed two roles are
   created for the topic
   - [MB-1342 <https://wso2.org/jira/browse/MB-1342>] - ORA-00001: unique
   constraint violation when publishing messages to a topic
   - [MB-1357 <https://wso2.org/jira/browse/MB-1357>] - Remove hard coded
   admin queue owner in MQTT PersistenceStoreConnector
   - [MB-1362 <https://wso2.org/jira/browse/MB-1362>] - Messages duplicated
   when publishing messages in distributed manner
   - [MB-1364 <https://wso2.org/jira/browse/MB-1364>] - The root topic
   "Publish" option in console leads to "Message sent successfully"
   - [MB-1367 <https://wso2.org/jira/browse/MB-1367>] - Observed a deadlock
   when viewing queues from the UI
   - [MB-1371 <https://wso2.org/jira/browse/MB-1371>] - Error when browsing
   messages while consuming
   - [MB-1372 <https://wso2.org/jira/browse/MB-1372>] - Admin user can
   change permission of a queue created via MC but not via a client
   - [MB-1373 <https://wso2.org/jira/browse/MB-1373>] - A user who is not
   eligible to assign any permissions can assign consume/publish permissions
   in queues
   - [MB-1375 <https://wso2.org/jira/browse/MB-1375>] - Tenants can consume
   messages from super tenants' queues when the queue name is prefixed with
   "admin"
   - [MB-1377 <https://wso2.org/jira/browse/MB-1377>] - Queues with "tmp"
   prefix are not displayed when you browse the queues even though the role
   exists
   - [MB-1379 <https://wso2.org/jira/browse/MB-1379>] - Tenant users cannot
   publish messages to queues via MC
   - [MB-1380 <https://wso2.org/jira/browse/MB-1380>] - Can not publish
   messages to a topic from tenant space from management console
   - [MB-1381 <https://wso2.org/jira/browse/MB-1381>] - Configuring
   permissions for topics behave differently compared with queues
   - [MB-1390 <https://wso2.org/jira/browse/MB-1390>] - [Tenant] Unable to
   delete topics due to subscription role is present in topics after tenant is
   cleaned
   - [MB-1392 <https://wso2.org/jira/browse/MB-1392>] - [Tenant]
   lang.NullPointerException: Tenant domain has not been set in CarbonContext
   - [MB-1393 <https://wso2.org/jira/browse/MB-1393>] - UI-test cases fail
   when browsing a queue
   - [MB-1416 <https://wso2.org/jira/browse/MB-1416>] - A user with a topic
   permission role only assigned to pub/sub to a specific subtopic can
   subscribe to immediate children
   - [MB-1418 <https://wso2.org/jira/browse/MB-1418>] - Pagination is not
   working in topic subscriptions page

Improvements:

   - [MB-1252 <https://wso2.org/jira/browse/MB-1252>] - Enhance current
   message delivery model
   - [MB-1359 <https://wso2.org/jira/browse/MB-1359>] - Slot recovery after
   server restart takes long time hence need to improve database query

Tasks:

   - [MB-1251 <https://wso2.org/jira/browse/MB-1251>] - Skip uploading
   product distribution nexus
   - [MB-1388 <https://wso2.org/jira/browse/MB-1388>] - Remove cassandra
   related source and libs



The documentation for MB 3.0.0 Alpha4 can be found at [2]. Your feedback is
most welcome. Any issue regarding the project can be reported at [3].

[1]
https://github.com/wso2/product-mb/releases/download/v3.0.0-ALPHA4/wso2mb-3.0.0-ALPHA4.zip
[2] https://docs.wso2.com/display/MB300/WSO2+Message+Broker+Documentation
[3] https://wso2.org/jira/browse/MB

Thanks,
-WSO2 MB Team-

-- 
Sasikala Kottegoda
*Software Engineer*
WSO2 Inc., http://wso2.com/
lean. enterprise. middleware
Mobile: +94 774835928/712792401
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