[AMQ-5532] ActiveMQ 5.9-SUBSCRIBER does not receive message from broker after reconneting

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 5.9.0, 5.9.1
• Component/s: Broker
• Labels: ActiveMQ5.9 BROKER RECONNECTION

Environment

OS-Solaris
JRE1.6

• Assignee: Unassigned
• Reporter: Arunava Bhattacharya
• Created: 21/Jan/15 16:36
• Updated: 19/Jun/15 22:50
• Resolved: 19/Jun/15 22:50

Description

Hi,
I am currently facing a problem while using Active MQ 5.9 as broker.
My System set up is as follows:

System Context
-------------------------
PUB(JMS Client)<-------->ACTIVE MQ BROKER(5.9)<----->SUB(MQTT Client)

Scenario
-------------
-10 messages are scheduled at publisher end and fired
-SUBSCRIBER is disconnected after receiving 1 message
-SUBSCRIBER is reconnected again
-SUBSCRIBER does not receive remaining messages.

SUBSCRIBER
------------------

• This is a durable subscriber.
  -Connects using cleanSession Flag as false
  -Subscribes using Requested QoS=2
  -Keep Alive is 30sec

Observation
------------------------
-Messages from JMS client are converted MQTT with QoS=0 at broker side

• Messages are lost incase they are scheduled in blulk from the PUBLISHER end only.
  -For instant single message this problem does not occur.

Questions
-------------------------
-Does this mean that delivery is not assured?
-How setting the persistence flag at JMS prodcuer end is translated to a MQTT message ? In general what is the logic to translate a JMS message to a MQTT message considering QoS?
-Are the messages stored in some in memory DB? and retried ?
-Is there a fix regarding this issue available in version 5.10 ? I see lot of improvements in 5.10 related to MQTT