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From mtaylor <>
Subject [GitHub] activemq-artemis pull request #1202: ARTEMIS-1111 Avoid deadlock on AMQP del...
Date Wed, 12 Apr 2017 13:40:58 GMT
GitHub user mtaylor opened a pull request:

    ARTEMIS-1111 Avoid deadlock on AMQP delivery during close

    I wanted to avoid the possibility of adding more race/lock conditions by introducing new
Executors/Threads when dealing with the situation described by ARTEMIS-1111.  Instead I've
upgraded the connection lock to a re-entrant lock.  Instead of the consumer delivery thread
blocking forever when the ProtonHandler lock is held by the close() event, it does a tryLock(),
then checks to see if the link is closed.  If so it will exit.  If not it will retry.

You can merge this pull request into a Git repository by running:

    $ git pull ARTEMIS-1111

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1202
commit 153053f8c71585bdfd66c353269a9e87aa1942f7
Author: Martyn Taylor <>
Date:   2017-04-12T13:38:06Z

    ARTEMIS-1111 Avoid deadlock on AMQP delivery during close


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