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https://issues.apache.org/jira/browse/HDFS-9063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-9063:
----------------------------
    Description: 
The current getContentSummary implementation does not take into account the 
snapshot path, thus if we have the following ops:
1. create dirs /foo/bar
2. take snapshot s1 on /foo
3. create a 1 byte file /foo/bar/baz

then "du /foo" and "du /foo/.snapshot/s1" can report same results for "bar", 
which is incorrect since the 1 byte file is not included in snapshot s1.

In the meanwhile, the snapshot diff list size is no longer included in the 
computation result. This can bring minor incompatibility but is consistent with 
the change in HDFS-7728.

  was:
The current getContentSummary implementation does not take into account the 
snapshot path, thus if we have the following ops:
1. create dirs /foo/bar
2. take snapshot s1 on /foo
3. create a 1 byte file /foo/bar/baz

then "du /foo" and "du /foo/.snapshot/s1" can report same results for "bar", 
which is incorrect since the 1 byte file is not included in snapshot s1.


> Correctly handle snapshot path for getContentSummary
> ----------------------------------------------------
>
>                 Key: HDFS-9063
>                 URL: https://issues.apache.org/jira/browse/HDFS-9063
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>              Labels: incompatible
>             Fix For: 2.8.0, 3.0.0-alpha1
>
>         Attachments: HDFS-9063.000.patch, test.001.patch
>
>
> The current getContentSummary implementation does not take into account the 
> snapshot path, thus if we have the following ops:
> 1. create dirs /foo/bar
> 2. take snapshot s1 on /foo
> 3. create a 1 byte file /foo/bar/baz
> then "du /foo" and "du /foo/.snapshot/s1" can report same results for "bar", 
> which is incorrect since the 1 byte file is not included in snapshot s1.
> In the meanwhile, the snapshot diff list size is no longer included in the 
> computation result. This can bring minor incompatibility but is consistent 
> with the change in HDFS-7728.



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