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From xabhi <xabh...@gmail.com>
Subject KahabDB compatibility issue between ActiveMQ 5.10 and ActiveMQ 5.11
Date Wed, 25 Feb 2015 06:53:17 GMT
Hi,
I was testing to see if kahadb created by ActiveMQ 5.10 can be used with
ActiveMQ 5.11.
ActiveMQ 5.11 starts up fine but is not able to access the older persistent
messages which were stored when KahaDB was being used with ActiveMQ 5.10. Is
this expected?

Also I see following directories in kahadb(i am using Multi-Kahadb)

Running with ActiveMQ 5.10:
/u/choudhab/activemq/kahadb>ls
0     queue#3a#2f#2fdesflow.#3e  queue#3a#2f#2fpricing.#3e 
topic#3a#2f#2fcometd.#3e   topic#3a#2f#2fpricing.#3e  txStore
lock  queue#3a#2f#2fgear.#3e     queue#3a#2f#2fseed.#3e    
topic#3a#2f#2fdportal.#3e  topic#3a#2f#2fseed.#3e

Running with ActiveMQ 5.11:
/u/choudhab/activemq/kahadb>ls
#210  lock                       queue#3a#2f#2fgear.#3e    
queue#3a#2f#2fseed.#3e    topic#3a#2f#2fdportal.#3e  topic#3a#2f#2fseed.#3e
0     queue#3a#2f#2fdesflow.#3e  queue#3a#2f#2fpricing.#3e 
topic#3a#2f#2fcometd.#3e  topic#3a#2f#2fpricing.#3e  txStore

I see that an additional directory #210 is created. Why is it created and
what is the purpose of this?

The persistence messages that were sent when running with 5.10 are still
present in the Kahadb.

Surprisingly, ActiveMQ retains the destination information across restarts. 
But When I do this test, jconsole doesn't show any of the previously created
destinations(during 5.10 run). Is this also expected?

Is this version switch supposed to be done with clean KahaDB state?

Thanks,
Abhi




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