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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4125) Use a persistent data structure for snapshots
Date Mon, 29 Oct 2012 02:07:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-4125:
-----------------------------------------

    Description: 
There is a well-known data structure supporting

- 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

  was:
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

    
> 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 supporting
> - 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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