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https://issues.apache.org/jira/browse/HDFS-7878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15515098#comment-15515098
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Anu Engineer commented on HDFS-7878:
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Yes, I think we should use {{BikeShed}} class instead of long, given that we
might want to inherit from it.
I also love the fact that {{BikeShed}} is an abstract class, so I can inherit
all wonderfully *colored* {{BikeSheds}}.
On a more serious note : I am {{+1}} on version 6 of this patch. This patch
seems to have addressed all substantive comments we have had on this issue.
Since this is going into Alpha-2, why don't we commit this and then discuss
renaming {{InodeId}} to {{BikeShed}} or whatever it is going to be named in a
separate Jira.
> API - expose an unique file identifier
> --------------------------------------
>
> Key: HDFS-7878
> URL: https://issues.apache.org/jira/browse/HDFS-7878
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Labels: BB2015-05-TBR
> Attachments: HDFS-7878.01.patch, HDFS-7878.02.patch,
> HDFS-7878.03.patch, HDFS-7878.04.patch, HDFS-7878.05.patch,
> HDFS-7878.06.patch, HDFS-7878.patch
>
>
> See HDFS-487.
> Even though that is resolved as duplicate, the ID is actually not exposed by
> the JIRA it supposedly duplicates.
> INode ID for the file should be easy to expose; alternatively ID could be
> derived from block IDs, to account for appends...
> This is useful e.g. for cache key by file, to make sure cache stays correct
> when file is overwritten.
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