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https://issues.apache.org/jira/browse/HDFS-7878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181634#comment-16181634
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Sean Mackrory commented on HDFS-7878:
-------------------------------------
Looks like this patch is violating some of compatibility guarantees. The
following is already annotated as Public and Stable in branch-3.0, but is
removed in this patch:
{code}
public FileStatus(long, boolean, int, long, long, long, FsPermission, String,
String, Path, Path, boolean, boolean, boolean)
{code}
Can we make sure a function with that prototype is added back?
LocatedFileStatus is a similar situation, although it's "Evolving":
{code}
public LocatedFileStatus(long length, boolean isdir, int, long, long, long,
FsPermission, String, String, Path, Path, boolean, boolean, boolean,
BlockLocation[] locations)
{code}
Could someone also enlighten me as to the purpose of the commented out lines in
FSProtos.proto? I thought it was odd that we were replacing "alias = 13", but I
have no idea why that line is there in the first place.
> 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-7878.07.patch, HDFS-7878.08.patch,
> HDFS-7878.09.patch, HDFS-7878.10.patch, HDFS-7878.11.patch,
> HDFS-7878.12.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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