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From "Goldstein Lyor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SSHD-911) Deadlock in Apache SshClient used for local port forwarding
Date Mon, 22 Apr 2019 10:03:00 GMT

    [ https://issues.apache.org/jira/browse/SSHD-911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16822980#comment-16822980
] 

Goldstein Lyor commented on SSHD-911:
-------------------------------------

Thanks, will look at it...

> Deadlock in Apache SshClient used for local port forwarding
> -----------------------------------------------------------
>
>                 Key: SSHD-911
>                 URL: https://issues.apache.org/jira/browse/SSHD-911
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Roberto Deandrea
>            Assignee: Goldstein Lyor
>            Priority: Major
>         Attachments: spxp.usrdump.20382184@AIX72.DMZ.20190417205240026.log
>
>
> Hi Lyor,
> We have an Apache SSHD 2.2.0 client and server SSH pair used for local port forwarding
of different protocols.
> In our lab environment we found that sometimes when the SSH client for any reason is
disconnecting from the SSH server, a DEADLOCK happens on the sshClient regarding the threads
in the thread pool.
> We are using builtin nio2 implementation for our SshClient.
> The deadlock is regarding the ClientChannelPendingMessagesQueue class added to fix routing
problems for local port forwarding in the past.
> Attached you can find the thread dump taken after the deadlock happend.
>  
> Can you please troubleshoot this problem ?
> [^spxp.usrdump.20382184@AIX72.DMZ.20190417205240026.log]



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