Anu Engineer created HDDS-1269:
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             Summary: [Ozone Upgrade] Add the ability to read block information 
from Namenode.
                 Key: HDDS-1269
                 URL: https://issues.apache.org/jira/browse/HDDS-1269
             Project: Hadoop Distributed Data Store
          Issue Type: Sub-task
          Components: upgrade
            Reporter: Anu Engineer


When upgrading an HDFS cluster, the user can choose to upgrade with zero data 
moves. However, it is also a good point to evaluate what-if? conditions and 
make optimal decisions for both HDFS and Ozone. First step in this process is 
to learn information about HDFS, FSImage provides then Namespace information, 
this JIRA will provide the blocks and data nodes part of HDFS.



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