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Posted to dev@uima.apache.org by "Jim Challenger (JIRA)" <de...@uima.apache.org> on 2014/06/04 20:35:01 UTC

[jira] [Closed] (UIMA-3814) DUCC check_ducc and start_ducc should detect and handle ssh hangs

     [ https://issues.apache.org/jira/browse/UIMA-3814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Challenger closed UIMA-3814.
--------------------------------

    Resolution: Fixed

> DUCC check_ducc and start_ducc should detect and handle ssh hangs
> -----------------------------------------------------------------
>
>                 Key: UIMA-3814
>                 URL: https://issues.apache.org/jira/browse/UIMA-3814
>             Project: UIMA
>          Issue Type: Improvement
>          Components: DUCC
>    Affects Versions: 1.1.0-Ducc
>            Reporter: Jim Challenger
>            Assignee: Jim Challenger
>             Fix For: 1.1.0-Ducc
>
>
> Broken nodes can cause ssh hangs, e.g. if NFS is broken.  Check_ducc and start_ducc should handle this.
> Proposed design: it's nearly impossible to stop the ssh without a ctl-c -like interrupt if the remote work is stuck in NFS.  check_ducc and start_ducc will catch the ctl-c, terminate any stuck ssh's, and report on the nodes that didn't return correctly.



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