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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2077) 1073: address checkpoint upload when one of the storage dirs is failed
Date Fri, 24 Jun 2011 20:37:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054665#comment-13054665

Eli Collins commented on HDFS-2077:

bq. Since we don't canonicalize paths anywhere, both the storage dir root and the files within
should start with the same prefix, regardless of whether there is a symlink along the path.

Ah, didn't realize that. Yea, in this case I agree getAbsolutePath is better. Good point btw
about the stat/readlink failing after an IOE, would be good to indicate in a comment.

> 1073: address checkpoint upload when one of the storage dirs is failed
> ----------------------------------------------------------------------
>                 Key: HDFS-2077
>                 URL: https://issues.apache.org/jira/browse/HDFS-2077
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Edit log branch (HDFS-1073)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: Edit log branch (HDFS-1073)
>         Attachments: hdfs-2077.txt, hdfs-2077.txt
> This JIRA addresses the following case:
> - NN is running with 2 storage dirs
> - 1 of the dirs fails
> - 2NN makes a checkpoint
> Currently, if GetImageServlet fails to open _any_ of the local files to receive a checkpoint,
it will fail the entire checkpoint upload process. Instead, it should continue to receive
checkpoints in the non-failed directories.

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