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From "Larry McCay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10922) User documentation for CredentialShell
Date Tue, 02 Sep 2014 23:59:52 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14118994#comment-14118994
] 

Larry McCay commented on HADOOP-10922:
--------------------------------------

Thank you for the detailed review.
I also anticipated moving a good bit of this to the design doc but it seemed some of the background
was needed here in order to understand the provider.path config.

All of your points are clear and reasonable and I will make the changes. I need to figure
out how to do the monospaced thing in apt. :)

b. What does "comma separated list of url syntax" mean? Should this say "comma-separated list
of URIs"?
Is only the first provider consulted? That's what the example's descriptive text seems to
indicate.

The comma-separated list determines the providers that are returned by the getProviders call.
Once you get a list of providers consulting the is up to the consumer of the API. The Configuration.getPassword
method actually consults them all until it finds the alias in a provider and returns that
one.

Hope that makes sense and I will try and convey that in the documentation and clarify the
example description so that when using the CLI you really should indicate specifically which
provider you want with the -provider option and only provide one. For background info, the
CLI implementation will affect the first non-transient provider in the path that it encounters.
Transient providers are providers like UserProvider since they are not long term storage for
passwords but are instead available for job access and cleaned up when done. That is definitely
description for the design document.

> User documentation for CredentialShell
> --------------------------------------
>
>                 Key: HADOOP-10922
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10922
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.6.0
>            Reporter: Andrew Wang
>            Assignee: Larry McCay
>         Attachments: HADOOP-10922-1.patch
>
>
> The CredentialShell needs end user documentation for the website.



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