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Posted to hdfs-issues@hadoop.apache.org by "John Zhuge (JIRA)" <ji...@apache.org> on 2016/01/09 19:16:39 UTC

[jira] [Created] (HDFS-9633) Test SnapshotDiffReport file path corner cases

John Zhuge created HDFS-9633:
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             Summary: Test SnapshotDiffReport file path corner cases
                 Key: HDFS-9633
                 URL: https://issues.apache.org/jira/browse/HDFS-9633
             Project: Hadoop HDFS
          Issue Type: Test
            Reporter: John Zhuge
            Assignee: John Zhuge
            Priority: Minor


SnapshotDiffReport design uses "file path" (instead of "inode ID + file path" as one example) to represent each diff entry. This can leads to some strange scenarios.

* DeleteRecreate: Delete a file, then create a new file of the same name.
* CircularRenames: Rename file "a" to "tmp", rename "b" to "a", then rename "tmp" to "b".

Add more unit tests to verify these corner cases.



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