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https://issues.apache.org/jira/browse/HDFS-14069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Danny Becker updated HDFS-14069:
--------------------------------
    Description: 
Currently, we only provide "minLiveReplicas" per DN that is being decomission

Add totalAccessibleBlocks to NumberReplicas
 Add logic to track blocks that have less than the maxReplicasTracked
 Add Map of low replica blockids to DatanodeDescriptor

  was:
 

Add totalAccessibleBlocks to NumberReplicas
 Add logic to track blocks that have less than the maxReplicasTracked
 Add Map of low replica blockids to DatanodeDescriptor


> Better debuggability for datanode decommissioning
> -------------------------------------------------
>
>                 Key: HDFS-14069
>                 URL: https://issues.apache.org/jira/browse/HDFS-14069
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, hdfs, namenode
>            Reporter: Danny Becker
>            Priority: Major
>         Attachments: HDFS-14069.000.patch
>
>
> Currently, we only provide "minLiveReplicas" per DN that is being decomission
> Add totalAccessibleBlocks to NumberReplicas
>  Add logic to track blocks that have less than the maxReplicasTracked
>  Add Map of low replica blockids to DatanodeDescriptor



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