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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7104) Fix and clarify INodeInPath getter functions
Date Wed, 24 Sep 2014 22:34:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14146988#comment-14146988
] 

Jing Zhao commented on HDFS-7104:
---------------------------------

Sorry I should mention this in my last comment: 
{code}
E.g., for path /dir/.snapshot, an array of size 1 is returned, containing only the inode of
dir."
{code}

Here an array of size 2 is actually returned, since the root ("/") node is also included :)

We can change it to sth. like "E.g., for path /dir/.snapshot with inodes containing all the
inodes involved in the path, an array of size 2 is returned, containing both the root("/")
and the inode of dir".

> Fix and clarify INodeInPath getter functions
> --------------------------------------------
>
>                 Key: HDFS-7104
>                 URL: https://issues.apache.org/jira/browse/HDFS-7104
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>            Priority: Minor
>         Attachments: HDFS-7104-20140923-v1.patch, HDFS-7104-20140923-v3.patch, HDFS-7104-20140924-v1.patch,
HDFS-7104-20140924-v2.patch
>
>
> inodes is initialized with the number of patch components. After resolve, it contains
both non-null and null elements (introduced by dot-snapshot dirs).
> When getINodes is called, an array is returned excluding all non elements, which is the
correct behavior. Meanwhile, the inodes array is trimmed too, which shouldn't be done by a
getter.
> Because of the above, the behavior of getINodesInPath depends on whether getINodes has
been called, which is not correct.
> The name of getLastINodeInPath is confusing – it actually returns the last non-null
inode in the path. Also, shouldn't the return type be a single INode?



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