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Date: Tue, 16 Aug 2011 15:39:27 +0000 (UTC)
From: "James Green (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
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Subject: [jira] [Commented] (AMQ-3453) Tool for reading messages in journal
 files
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    [ https://issues.apache.org/jira/browse/AMQ-3453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13085781#comment-13085781 ] 

James Green commented on AMQ-3453:
----------------------------------

http://activemq.2283324.n4.nabble.com/KahaDB-storage-size-grows-despite-almost-no-pending-messages-td3573894.html for debugging ideas.

Gary - perhaps extract the import bits from the thread and add to the documentation with a FAQ entry "KahaDB log files keeps growing"?

> Tool for reading messages in journal files
> ------------------------------------------
>
>                 Key: AMQ-3453
>                 URL: https://issues.apache.org/jira/browse/AMQ-3453
>             Project: ActiveMQ
>          Issue Type: Wish
>          Components: Broker
>            Reporter: Hariharan
>              Labels: tools
>
> Hi,
> Am facing some serious issues with AMQ. Some inputs from my side on what I see:
> 1. Am using AMQ 5.5
> 2. kahaDB persistence mechanism is being used.
> 2. The max journal file size set is 64 mb.
> 3. All messages posted on queues and topics are being consumed successfully by the clients.
> 4. I checked the pending messages by clicking on browseMessages button in Operations tab under each queue and topic and a lot of them were empty while some had messages that were variable over time. So am sure the messages are being acknowledged properly.
> But what I see is that the journal files are not getting cleaned up regularly. Some of them do get cleaned up but a lot of them stay back. A snap shot is given below. 
> Total size of this folder is 1.6G and growing.
> {code:xml}
> -rw-rw-r-- 1 manih manih        0 Aug  6 09:15 lock
> -rw-rw-r-- 1 manih manih 67110696 Aug  8 10:37 db-8.log
> -rw-rw-r-- 1 manih manih 67115667 Aug  8 13:34 db-9.log
> -rw-rw-r-- 1 manih manih 67109195 Aug  9 03:43 db-13.log
> -rw-rw-r-- 1 manih manih 67108941 Aug  9 07:42 db-14.log
> -rw-rw-r-- 1 manih manih 67110336 Aug  9 15:56 db-16.log
> -rw-rw-r-- 1 manih manih 67108973 Aug  9 18:41 db-17.log
> -rw-rw-r-- 1 manih manih 67109661 Aug 10 06:06 db-20.log
> -rw-rw-r-- 1 manih manih 67112421 Aug 10 14:43 db-22.log
> -rw-rw-r-- 1 manih manih 67108882 Aug 10 20:30 db-24.log
> -rw-rw-r-- 1 manih manih 67109313 Aug 11 09:19 db-27.log
> -rw-rw-r-- 1 manih manih 67109241 Aug 11 16:30 db-29.log
> -rw-rw-r-- 1 manih manih 67108976 Aug 12 06:02 db-33.log
> -rw-rw-r-- 1 manih manih 67116308 Aug 12 11:11 db-34.log
> -rw-rw-r-- 1 manih manih 67116690 Aug 12 15:54 db-35.log
> -rw-rw-r-- 1 manih manih 67109627 Aug 12 18:57 db-36.log
> -rw-rw-r-- 1 manih manih 67111521 Aug 13 02:54 db-37.log
> -rw-rw-r-- 1 manih manih 67114239 Aug 13 12:13 db-38.log
> -rw-rw-r-- 1 manih manih 67117361 Aug 13 21:26 db-39.log
> -rw-rw-r-- 1 manih manih 67117848 Aug 14 06:46 db-40.log
> -rw-rw-r-- 1 manih manih 67113289 Aug 15 13:09 db-46.log
> -rw-rw-r-- 1 manih manih 67109565 Aug 15 17:05 db-47.log
> -rw-rw-r-- 1 manih manih 67115347 Aug 15 21:32 db-48.log
> -rw-rw-r-- 1 manih manih 67109370 Aug 16 05:10 db-50.log
> -rw-rw-r-- 1 manih manih  3291400 Aug 16 08:36 db.redo
> -rw-rw-r-- 1 manih manih 53694464 Aug 16 08:36 db.data
> -rw-rw-r-- 1 manih manih 66584576 Aug 16 08:36 db-51.log
> {code}
> If all messages are being consumed regularly, then am not sure why the old files are staying back while some of them created after them got cleaned up.
> Am not able to read the files as they are in binary format. Am also not sure if I can go ahead and delete the old files.
> Is there any tool that can help me in finding out what messages these files are actually holding? If there are no tools like that can AMQ developers develop one? 
> Am sure it would be really useful for a lot of us.
> Thanks in advance.
> Hari

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