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From "Manoj Govindassamy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9063) Correctly handle snapshot path for getContentSummary
Date Fri, 23 Sep 2016 01:32:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15515048#comment-15515048
] 

Manoj Govindassamy commented on HDFS-9063:
------------------------------------------

[~jingzhao], 

Did you get a chance to look at the attached test case ? Is there anything wrong with the
expectation in the test ? I can file a jira to track this issue, if you also feel snapDir
count is not working as expected. Thanks.

> 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, test.002.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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