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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4125) Use a persistent data structure for snapshots
Date Mon, 29 Oct 2012 01:43:12 GMT
Tsz Wo (Nicholas), SZE created HDFS-4125:
--------------------------------------------

             Summary: Use a persistent data structure for snapshots
                 Key: HDFS-4125
                 URL: https://issues.apache.org/jira/browse/HDFS-4125
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: name-node
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Suresh Srinivas


There is a well-known data structure supportting

    O(1) snapshot creation,
    O(1) access slowdown, and
    O(1) modification space and time.

See http://www.cs.cmu.edu/~sleator/papers/Persistence.htm

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