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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2032) Encode namespace identification info in image and edits headers
Date Fri, 03 Jun 2011 21:00:47 GMT
Encode namespace identification info in image and edits headers
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                 Key: HDFS-2032
                 URL: https://issues.apache.org/jira/browse/HDFS-2032
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: Edit log branch (HDFS-1073), 0.23.0
            Reporter: Todd Lipcon


In HDFS-2026, Sanjay suggested that we add the namespaceID and clusterID as part of the header
information in image and edits files. We can then verify that the namespace info matches the
VERSION info before loading any such file. This would prevent any accidental mixing of transactions
between two clusters (either by virtue of HDFS bugs or by operational mistakes).

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