Yongjun Zhang created HDFS-12295:

             Summary: NameNode to support file path prefix 
                 Key: HDFS-12295
                 URL: https://issues.apache.org/jira/browse/HDFS-12295
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: hdfs, namenode
            Reporter: Yongjun Zhang
            Assignee: Yongjun Zhang

Let NameNode to support prefix /.reserved/bypassExtAttr, so client can add 
thisprefix to a path before calling getFileStatus, e.g. /ab/c becomes 
/.reserved/bypassExtAttr/a/b/c. NN will parse the path at the very beginning, 
and bypass external attribute provider if the prefix is there.

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