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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9348) CloudStack Server degrades when a lot of connections on port 8250
Date Thu, 05 May 2016 19:29:12 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15272918#comment-15272918
] 

ASF GitHub Bot commented on CLOUDSTACK-9348:
--------------------------------------------

Github user swill commented on the pull request:

    https://github.com/apache/cloudstack/pull/1493#issuecomment-217252920
  
    @rhtyd I have some bad news on this PR.  I have been having issues in CI ever since this
got merged into master.  When the tests don't run (and fail which causes the CI run to fail),
then the DeployDatacenter script will fail.  It looks like this code is treating the hosts
as a malicious client.  We get a handshake and then things fail.  We basically get a `Failed
to add host` error.
    
    I can get you more details if you need.  
    
    I will test the #1534 PR to see if that fixes things, but I am a bit concerned about this
PR right now...


> CloudStack Server degrades when a lot of connections on port 8250
> -----------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9348
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9348
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Rohit Yadav
>            Assignee: Rohit Yadav
>             Fix For: 4.9.0
>
>
> An intermittent issue was found with a large CloudStack deployment, where servers could
not keep agents connected on port 8250.
> All connections are handled by accept() in NioConnection:
> https://github.com/apache/cloudstack/blob/master/utils/src/main/java/com/cloud/utils/nio/NioConnection.java#L125
> A new connection is handled by accept() which does blocking SSL handshake. A good fix
would be to make this non-blocking and handle expensive tasks in separate threads/pool. This
way the main IO loop won't be blocked and can continue to serve other agents/clients.



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