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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3795) QJM: validate journal dir at startup
Date Mon, 13 Aug 2012 21:54:38 GMT
Todd Lipcon created HDFS-3795:

             Summary: 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
         Attachments: 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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