Neilxzn opened a new pull request, #4541:
URL: https://github.com/apache/hadoop/pull/4541

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   ### Description of PR
   https://issues.apache.org/jira/browse/HDFS-16655
   By adding erasure coding policy name to oiv output, it will help with oiv 
post-analysis to have a overview of all folders/files with specified ec policy 
and to apply internal regulation based on this information. In particular, it 
wiil be convenient for the platform to calculate the real storage size of the 
ec file.
   
   ### How was this patch tested?
   add test class: 
org.apache.hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerForErasureCodingPolicy
   
   ### For code changes:
   
   add oiv cmd option "-ec" , used by delimiter only
   
   


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