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https://issues.apache.org/jira/browse/HDFS-4268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510281#comment-13510281
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Konstantin Boudnik commented on HDFS-4268:
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+1 patch looks good.
> Remove redundant enum NNHAStatusHeartbeat.State
> -----------------------------------------------
>
> Key: HDFS-4268
> URL: https://issues.apache.org/jira/browse/HDFS-4268
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.2-alpha
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Attachments: heartbeatHAState.patch
>
>
> NNHAStatusHeartbeat.State is redundant and can be replaced with commonly used
> enum HAServiceState.
> We should also consistently use HAServiceState to check if the state is
> ACTIVE or STANDBY rather than using {{instanceof}}.
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