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https://issues.apache.org/jira/browse/HDFS-7104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14147035#comment-14147035
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Jing Zhao commented on HDFS-7104:
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Thanks for the fix!
bq. for path /dir/.snapshot, {@link #inodes} includes 3 elements, for "/",
"dir", and ".snapshot"
Maybe we can change it to "After resolving the path "/dir/.snapshot", {@link
#inodes} == {/, dir, null}." Other than this it looks good to me.
> 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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