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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-944) Redundant field: DatanodeDescriptor.isAlive
Date Wed, 07 Mar 2007 22:17:24 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dhruba borthakur updated HADOOP-944:
------------------------------------

    Component/s: dfs

> Redundant field: DatanodeDescriptor.isAlive
> -------------------------------------------
>
>                 Key: HADOOP-944
>                 URL: https://issues.apache.org/jira/browse/HADOOP-944
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            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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