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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-944) Redundant field: DatanodeDescriptor.isAlive
Date Sat, 27 Jan 2007 00:25:49 GMT
Redundant field: DatanodeDescriptor.isAlive

                 Key: HADOOP-944
                 URL: https://issues.apache.org/jira/browse/HADOOP-944
             Project: Hadoop
          Issue Type: Improvement
            Reporter: Konstantin Shvachko

The lastUpdate field should be used for determining whether the data-node is dead or alive.
The DatanodeDescriptor should have isAlive() method rather than the field.
Synchronizing different fields having the same meaning often leads to mistakes.

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