kanaka kumar avvaru created HDFS-8640:
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             Summary: Make reserved RBW space visible through JMX
                 Key: HDFS-8640
                 URL: https://issues.apache.org/jira/browse/HDFS-8640
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: kanaka kumar avvaru
            Assignee: kanaka kumar avvaru


At present there is no way to trace the reserved space for RBW  in DataNode to 
identify any leaks like HDFS-8626

Idea is to add the value to {{VolumeInfo}} so that the {{DataNodeInfo}} JMX 
bean can be referred to know the present reserved space



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