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From Tomáš Martinec (JIRA) <>
Subject [jira] [Updated] (AMQ-4230) Activemq hangs when temp storage is used
Date Tue, 18 Dec 2012 13:12:12 GMT


Tomáš Martinec updated AMQ-4230:

    Attachment: extending.kahadb.diff

Required for every fix approach
> Activemq hangs when temp storage is used
> ----------------------------------------
>                 Key: AMQ-4230
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.4.2, 5.7.0
>         Environment: fedora15; ubuntu 12.10; debian; probably platform independent
>            Reporter: Tomáš Martinec
>              Labels: cursors,, deadlock,, temp-storage
>         Attachments: extending.kahadb.diff, making-cursors-RWlock-aware.diff, unsynchronizing-cursors.diff
> The full story is user forum under title:
> Activemq 5.4.2 hangs when the temp disk usage is used
> On the line 219 of
I unlocked the messagesLock that was created in the queue. I have done that, because the writer
thread waits for free space, but the consumers are locked waiting until the writer thread
releases the lock.
> My fixing approach was making the cursors aware of the RW lock. 

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