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From "Larry McCay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12846) Credential Provider Recursive Dependencies
Date Sat, 27 Feb 2016 00:07:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15170164#comment-15170164
] 

Larry McCay commented on HADOOP-12846:
--------------------------------------

Actually that won't need any regex - even though I already wrote it! :)

> Credential Provider Recursive Dependencies
> ------------------------------------------
>
>                 Key: HADOOP-12846
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12846
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Larry McCay
>            Assignee: Larry McCay
>
> There are a few credential provider integration points in which the use of a certain
type of provider in a certain filesystem causes a recursive infinite loop. 
> For instance, a component such as sqoop can be protecting a db password in a credential
provider within the wasb/azure filesystem. Now that HADOOP-12555 has introduced the ability
to protect the access keys for wasb we suddenly need access to wasb to get the database keys
which initiates the attempt to get the access keys from wasb - since there is a provider path
configured for sqoop.
> For such integrations, those in which it doesn't make sense to protect the access keys
inside the thing that we need the keys to access, we need a solution to avoid this recursion
- other than dictating what filesystems can be used by other components.
> This patch proposes the ability to scrub the configured provider path of any provider
types that would be incompatible with the integration point. In other words, before calling
Configuration.getPassword for the access keys to wasb, we can remove any configured providers
that require access to wasb.
> This will require some regex expressions that can be used to identify the configuration
of such provider uri's within the provider path parameter.



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