[infinispan-issues] [JBoss JIRA] (ISPN-2808) Make Infinispan use its own thread pool for sending messages in order to avoid thread deadlocks

[Pedro Ruivo (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759069#comment-12759069 ] 

Pedro Ruivo commented on ISPN-2808:
-----------------------------------

@[~rvansa] I've a working prototype in here: https://github.com/pruivo/infinispan/tree/ISPN-2808

If you could try it to see if it solves the problem and give some feedback, I'll be appreciated.
                
> Make Infinispan use its own thread pool for sending messages in order to avoid thread deadlocks
> -----------------------------------------------------------------------------------------------
>
>                 Key: ISPN-2808
>                 URL: https://issues.jboss.org/browse/ISPN-2808
>             Project: Infinispan
>          Issue Type: Feature Request
>            Reporter: Mircea Markus
>            Assignee: Pedro Ruivo
>             Fix For: 5.3.0.Beta1, 5.3.0.Final
>
>
> - when an OOB thread sends a sync request it blocks waiting on a sync in jgroups RequestCorrelator 
> - it gets released by an another OOB thread when the remote node responds
> Now if all the OOB threads are blocked in sending, then there's no available OOB thread to unblock them even if responses from remote nodes have arrived - deadlock. In order to avoid this deadlock we can use a different thread pool for sending OOB messages.
> For a discussion around this please refer to: http://infinispan.markmail.org/search/#query:%20list%3Aorg.jboss.lists.infinispan-dev+page:1+mid:7buuwljp7i7fvnpe+state:results 

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