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https://issues.apache.org/jira/browse/HDFS-11224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15731649#comment-15731649
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Brahma Reddy Battula commented on HDFS-11224:
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[~vinayrpet] Nice Catch...
Patch LGTM, apart from following minor nit.
can we update the following comment also..?
{code}
// This is null if the DataNode has not yet registered. We expect this
// will never happen, because the DataNode has logic to prevent sending
// lifeline messages until after initial registration is successful.
// Lifeline message handling can't send commands back to the DataNode to
// tell it to register, so simply exit.
{code}
> Lifeline message should be ignored for dead nodes
> -------------------------------------------------
>
> Key: HDFS-11224
> URL: https://issues.apache.org/jira/browse/HDFS-11224
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Priority: Critical
> Attachments: HDFS-11224-01.patch
>
>
> Lifeline messages should be ignored for dead nodes in NameNode.
> Otherwise, cluster level stats such as capacity, used, etc will be doubled,
> after re-registration of node.
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