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https://issues.apache.org/jira/browse/HDFS-11146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15673862#comment-15673862
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Kihwal Lee commented on HDFS-11146:
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NN could tell datanodes to send FBR in a heartbeat response. This way, NN can
decide when to get a FBR from whom, instead of DNs randomly sending.
> Excess replicas will not be deleted until all storages's FBR received after
> failover
> ------------------------------------------------------------------------------------
>
> Key: HDFS-11146
> URL: https://issues.apache.org/jira/browse/HDFS-11146
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Brahma Reddy Battula
> Assignee: Brahma Reddy Battula
>
> Excess replicas will not be deleted until all storages's FBR received after
> failover.
> Thinking following soultion can help.
> *Solution:*
> I think after failover, As DNs aware of failover ,so they can send another
> block report (FBR) irrespective of interval.May be some shuffle can be done,
> similar to initial delay.
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