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