Ashvin created HDFS-14856:
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             Summary: Add ability to import file ACLs from remote store
                 Key: HDFS-14856
                 URL: https://issues.apache.org/jira/browse/HDFS-14856
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Ashvin


Provided storage (HDFS-9806) allows data on external storage systems to 
seamlessly appear as files on HDFS. However, in the implementation today, the 
external store scanner, {{FsTreeWalk,}} ignores any ACLs on the data. In a 
secure HDFS setup where external storage system and HDFS belong to the same 
security domain, uniform enforcement of the authorization policies may be 
desired. This task aims to extend the ability of the external store scanner to 
support this use case. When configured, the scanner should attempt to fetch 
ACLs and provide it to the consumer.



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