hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2988) Improve error message when storage directory lock fails
Date Thu, 31 May 2012 21:16:23 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286951#comment-13286951
] 

Todd Lipcon commented on HDFS-2988:
-----------------------------------

Hi Miomir. I'm not aware of any such method, so I think your MXBean-based solution should
be fine.

Do we need it to be cross-platform consistent? I think we just need something we can display
to the user for informational purposes, anyway.
                
> Improve error message when storage directory lock fails
> -------------------------------------------------------
>
>                 Key: HDFS-2988
>                 URL: https://issues.apache.org/jira/browse/HDFS-2988
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: Todd Lipcon
>            Priority: Minor
>              Labels: newbie
>
> Currently, the error message is fairly opaque to a non-developer ("Cannot lock storage"
or something). Instead, we should have some improvments:
> - when we create the in_use.lock file, we should write the hostname/PID that locked the
file
> - if the lock fails, and in_use.lock exists, the error message should say something like
"It appears that another namenode (pid 23423 on host foo.example.com) has already locked the
storage directory."
> - if the lock fails, and no lock file exists, the error message should say something
like "if this storage directory is mounted via NFS, ensure that the appropriate nfs lock services
are running."

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message