[jira] [Resolved] (HADOOP-10391) HADOOP-10211 change for comma-separated list of QOP values broke backwards-compatibility with existing configs.

["Chris Nauroth (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-10391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Nauroth resolved HADOOP-10391.
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    Resolution: Won't Fix

I'm resolving this as won't fix.  I agree with the comments from Arpit and Daryn that the stricter validation introduced in HADOOP-10211 is a good thing.  I agree that the old behavior was a bug, so there is less onus to support it from a backwards-compatibility perspective.

I do think it's important to publish a release note, so I added that to HADOOP-10211.  Could someone who worked the original issue please review what I entered?  Feel free to make changes to the content as you see fit.

Thank you, everyone, and sorry for the distraction.


> HADOOP-10211 change for comma-separated list of QOP values broke backwards-compatibility with existing configs.
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10391
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10391
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.4.0
>            Reporter: Chris Nauroth
>            Assignee: Benoy Antony
>            Priority: Blocker
>
> HADOOP-10211 changed parsing of QOP values to support a comma-separated list.  This change accidentally broke backwards-compatibility with existing configs.  Previously, an unrecognized value caused it to default to authentication.  Now, an unrecognized value causes {{IllegalArgumentException}}.  Some deployments had been using a value of "none" in insecure clusters, so the change would break those existing deployments.



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