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https://issues.apache.org/jira/browse/HDFS-9391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15803555#comment-15803555
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Manoj Govindassamy commented on HDFS-9391:
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>> But NumberReplicas represents the state of all replicas.
Thats Right.
>> Thus for the case "One replica is decommissioning and two replicas of the
>> same block are entering maintenance",
>> NumberReplicas#decommissionedAndDecommissioning == 1,
>> NumberReplicas#maintenanceReplicas() == 2.
Yes, exactly.
> Update webUI/JMX to display maintenance state info
> --------------------------------------------------
>
> Key: HDFS-9391
> URL: https://issues.apache.org/jira/browse/HDFS-9391
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.0-alpha1
> Reporter: Ming Ma
> Assignee: Manoj Govindassamy
> Attachments: HDFS-9391-MaintenanceMode-WebUI.pdf, HDFS-9391.01.patch,
> HDFS-9391.02.patch, Maintenance webUI.png
>
>
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