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From "Michael Chen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-2929) Compressed text message received by consumer uncompressed
Date Wed, 22 Sep 2010 10:21:41 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-2929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61999#action_61999
] 

Michael Chen commented on AMQ-2929:
-----------------------------------

Another observation is that while the message is enqueued with no consumer, using JConsole
[browseMessages] button on that queue shows the decompressed message text. I would expect
it to be unreadable compressed binary.

> Compressed text message received by consumer uncompressed
> ---------------------------------------------------------
>
>                 Key: AMQ-2929
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2929
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JMS client
>    Affects Versions: 5.3.2
>         Environment: ActiveMQ 5.3.2 / Camel 2.2.0
>            Reporter: Michael Chen
>
> I have a queue setup to send and consume compressed text messages.  This is done via
Spring setting ActiveMQConnectionFactory.useCompression to true.  If the consumer connects
to this queue before the first message is arrives, everything works great.
> If the messages are sent to this queue before the consumer connects, those early messages
will cause ZipException "unknown compression method" when consumed by the belated consumer.
Debugger shows that the ActiveMQTextMessage.content already contains the uncompressed text
(with 4 leading length bytes) when ActiveMQTextMessage.getText() is called.
> If I set useCompression to false, early messages are consumed with no problems.  Please
look into this.
> I notice that after ActiveMQTextMessage.getText() decompress the message, it does not
set compressed to false. Not sure if that is the cause.

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