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https://issues.apache.org/jira/browse/HDFS-11826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16107990#comment-16107990
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Chris Douglas commented on HDFS-11826:
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+1 looks straightforward.
Only one minor suggestion: exit with an error if the feature is enabled, but
none of the heartbeat services are valid (i.e., {{createHeartbeatServices}}
returns an empty map).
> Federation Namenode Heartbeat
> -----------------------------
>
> Key: HDFS-11826
> URL: https://issues.apache.org/jira/browse/HDFS-11826
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: fs
> Reporter: Inigo Goiri
> Assignee: Inigo Goiri
> Fix For: HDFS-10467
>
> Attachments: HDFS-11826-HDFS-10467-000.patch
>
>
> Add a service to the Router to check the state of a Namenode and report it
> into the State Store.
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