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https://issues.apache.org/activemq/browse/AMQ-2045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Jencks resolved AMQ-2045.
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    Resolution: Fixed
      Assignee: Hiram Chirino  (was: David Jencks)

rev 729835 adds consistency checks to Valve and removes the unbalanced 
decrement.  IMO this should be reviewed by a more knowledgeable developer 
before closing... Hiram can you take a look or suggest someone who could?

> Unbalanced Valve usage in VMTransport.
> --------------------------------------
>
>                 Key: AMQ-2045
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2045
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Transport
>    Affects Versions: 5.3.0
>            Reporter: David Jencks
>            Assignee: Hiram Chirino
>             Fix For: 5.3.0
>
>
> Valve doesn't check that its state is consistent (counters >= 0).  There's 
> unbalanced increment/decrement calls in VMTransport.oneway:
>                  enqueueValve.decrement();  //TODO unbalanced??
>  (line ~99) 
> If I balance this with a preceding enqueValve.increment() I get a deadlock in 
> a test when the server tries to send a response message so I assume the 
> correct fix is to remove the decrement in this VMTransports valve.

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