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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4563) A State Machine for name-node blocks.
Date Fri, 31 Oct 2008 19:19:44 GMT
A State Machine for name-node blocks.
-------------------------------------

                 Key: HADOOP-4563
                 URL: https://issues.apache.org/jira/browse/HADOOP-4563
             Project: Hadoop Core
          Issue Type: Improvement
          Components: dfs
            Reporter: Konstantin Shvachko
             Fix For: 0.20.0


Blocks on the name-node can belong to different collections like the blocksMap, under-replicated,
over-replicated lists, etc.
It is getting more and more complicated to keep the lists consistent.
It would be good to formalize the movement of the blocks between the collections using a state
machine.

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