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From kjagadeeshkumar <>
Subject ActiveMQ : potential hang with failover, deadlock pending dispatch with AMQ 5.4.2
Date Tue, 10 Jan 2012 21:09:00 GMT

We still see the threads stuck in socketWrite both on the broker and
clients, during the failover. And the failover is not successful. And these
sockets were not released till we recycle the broker and client.

We are using AMQ 5.4.2 and for performance perspective, we are using
Straight through Session Consumption ie, alwaysSessionAsync set to false.

But this is not an issue when we set alwaysSessionAsync  to true. 

>From the jira items, viz  http:// 2693 , we notice that this
socketWrite issue has been resolved in 5.4. But it isnt the case. The issue
is highly repeatable.

In the attachment, i had the thread dump on both the broker as well as the
clients connected to it.
Let me know in case you need more details.

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