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Date: Tue, 19 Mar 2013 08:35:15 +0000 (UTC)
From: "Tsz Wo (Nicholas), SZE (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Created] (HDFS-4612) Not to use INode.getParent() when
 generating snapshot diff report
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Tsz Wo (Nicholas), SZE created HDFS-4612:
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             Summary: Not to use INode.getParent() when generating snapshot diff report
                 Key: HDFS-4612
                 URL: https://issues.apache.org/jira/browse/HDFS-4612
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: namenode
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


With rename, an inode may have multiple access paths, i.e. multiple parents.  In such case, INode.getParent() returns the parent in the current state but not the parents in the snapshots.  Therefore, we cannot use INode.getParent() to generate snapshot diff report.

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