Description
In 2.6.x hadoop deploys, given a blockId it was very easy to find out the file name and the locations of replicas (also whether they are corrupt or not).
This was the REST call:
http://<nnAddress>:<port#>/block_info_xml.jsp?blockId=xxx
But this was removed by HDFS-6252 in 2.7 builds.
Creating this jira to restore that functionality.