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https://issues.apache.org/jira/browse/HADOOP-8724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Joseph Evans updated HADOOP-8724:
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Attachment: HADOOP-8724.txt
I like the points that have been made so far, but I would prefer to discuss a
real API over a theoretical one. The implementation still needs a lot of work
but the existing tests so far pass.
I am mostly interested in feedback about the APIs themselves.
In general there is a Glob class. It is made up of a path and a pattern. The
Path is optional. If the Path was supplied and does not exist an exception
will be thrown. The pattern is required. A Glob can also be created from just
a Path, but that is mostly for backwards compatibility. In most cases I would
expect a Glob to be created with just a pattern.
The result of running a glob is a GlobResult which is a
RemoteIterator<FileStatus>, but also provides some extra APIs so that someone
can easily tell if nothing matched the glob, or (and this this impl is a real
hack right now) the glob looked more like a path then a glob. This is only
really needed by PathData so the shell can adjust the error message
appropriately.
> Add improved APIs for globbing
> ------------------------------
>
> Key: HADOOP-8724
> URL: https://issues.apache.org/jira/browse/HADOOP-8724
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Attachments: HADOOP-8724.txt
>
>
> After the discussion on HADOOP-8709 it was decided that we need better APIs
> for globbing to remove some of the inconsistencies with other APIs. Inorder
> to maintain backwards compatibility we should deprecate the existing APIs and
> add in new ones.
> See HADOOP-8709 for more information about exactly how those APIs should look
> and behave.
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