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https://issues.apache.org/jira/browse/HDFS-3027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218828#comment-13218828
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Eli Collins commented on HDFS-3027:
-----------------------------------
Looks like NNResourceChecker#hasAvailableDiskSpace doesn't actually throw IOE
so checkAvailableResources doesn't need to either, so you can remove the new
catch of IOE case in NN#healthCheck. Otherwise looks great.
> HA: Implement a simple NN health check
> --------------------------------------
>
> Key: HDFS-3027
> URL: https://issues.apache.org/jira/browse/HDFS-3027
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Attachments: HDFS-3027-HDFS-1623.patch, HDFS-3027-HDFS-1623.patch
>
>
> This JIRA is to address a TODO in NameNode about actually implementing the
> checkHealth RPC.
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