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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/09/19 07:04:07 UTC

[jira] [Created] (HDFS-3958) Integrate upgrade/finalize/rollback with external journals

Todd Lipcon created HDFS-3958:
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             Summary: Integrate upgrade/finalize/rollback with external journals
                 Key: HDFS-3958
                 URL: https://issues.apache.org/jira/browse/HDFS-3958
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 3.0.0
            Reporter: Todd Lipcon


Currently the NameNode upgrade/rollback/finalize framework only supports local storage. With edits being stored in pluggable Journals, this could create certain difficulties - in particular, rollback wouldn't actually rollback the external storage to the old state.

We should look at how to expose the right hooks to the external journal storage to snapshot/rollback/finalize.

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