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From "Goldstein Lyor (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SSHD-911) Deadlock in Apache SshClient used for local port forwarding
Date Tue, 30 Apr 2019 13:15:00 GMT

     [ https://issues.apache.org/jira/browse/SSHD-911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Goldstein Lyor resolved SSHD-911.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 2.3.0

[~roberto.deandrea] Marking this issue as fixed - let's continue the discussion regarding
the 2nd deadlock in SSHD-912 which I have opened specifically for 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
>             Fix For: 2.3.0
>
>         Attachments: spxp.usrdump.20382184@AIX72.DMZ.20190417205240026.log, spxp.usrdump.33095980@AIX72.DMZ.20190423123751496.log
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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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