[jira] [Commented] (CLOUDSTACK-8611) CS waits indefinitely for CheckS2SVpnConnectionsCommand to return

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15182478#comment-15182478 ] 

ASF GitHub Bot commented on CLOUDSTACK-8611:
--------------------------------------------

Github user GabrielBrascher commented on the pull request:

    https://github.com/apache/cloudstack/pull/561#issuecomment-193063329
  
    Shouldn't the class throw a less generic Exception? A good choice might be the **com.cloud.utils.ssh.SshException.SshException(String)**.
    Although this change is out of this PR scope, this got my attention.


> CS waits indefinitely for CheckS2SVpnConnectionsCommand to return
> -----------------------------------------------------------------
>
>                 Key: CLOUDSTACK-8611
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8611
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Likitha Shetty
>            Assignee: Suresh Kumar Anaparti
>             Fix For: 4.6.1
>
>
> On one instance, CS began to execute CheckS2SVpnConnectionsCommand command on a router but the command result was never returned to the MS. If a command never returns, then 'DirectAgent' thread executing this command is blocked indefinitely and cannot pick up any other request.
> Now since this command is designed to execute in sequence on a host and is run regularly, every execution of that command thereafter on that particular host ended up picking up a DirectAgent thread and waiting for the previous execution to complete. And hence overtime, the host ended up using and blocking all 'DirectAgent' threads indefinitely.



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