[jira] [Created] (HDFS-16486) RBF: Don't override listing if there is a physical path from subcluster

["Fengnan Li (Jira)" <ji...@apache.org>]

Fengnan Li created HDFS-16486:
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             Summary: RBF: Don't override listing if there is a physical path from subcluster
                 Key: HDFS-16486
                 URL: https://issues.apache.org/jira/browse/HDFS-16486
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Fengnan Li
            Assignee: Fengnan Li


In getListing in RouterClientProtocol, currently router mount point would override the listing from subclusters. This will result in different HdfsFileStatus especially for owner/group permissions since Router mounts and the actual HDFS path are created from different user.

 

[https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java#L857]

 

To mitigate this discrepancy we can skip the mount point if there is already such a listing from subcluster.



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