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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-3795) QJM: validate journal dir at startup
Date Wed, 15 Aug 2012 00:54:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon resolved HDFS-3795.

       Resolution: Fixed
    Fix Version/s: QuorumJournalManager (HDFS-3077)
     Hadoop Flags: Reviewed
> QJM: validate journal dir at startup
> ------------------------------------
>                 Key: HDFS-3795
>                 URL: https://issues.apache.org/jira/browse/HDFS-3795
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: QuorumJournalManager (HDFS-3077)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: QuorumJournalManager (HDFS-3077)
>         Attachments: hdfs-3795.txt, hdfs-3795.txt
> Currently, the JN does not validate the configured journal directory until it tries to
write into it. This is counter-intuitive for users, since they would expect to find out about
a misconfiguration at startup time, rather than on first access. Additionally, two testers
accidentally configured the journal dir to be a URI, which the code accidentally understood
as a relative path ({{CWD/file:/foo/bar}}.
> We should validate the config at startup to be an accessible absolute path.

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