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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13714) Tighten up our compatibility guidelines for Hadoop 3
Date Wed, 03 May 2017 17:28:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15995272#comment-15995272
] 

Daniel Templeton commented on HADOOP-13714:
-------------------------------------------

Fair points.  Many of the examples you cited are cases where the guidelines were vague or
missing. Call me naïvely optimistic (because I am), but my hope is that if we can clean up
those areas and make the guidelines a first-class citizen in the development process, we can
make a stronger compatibility promise.

{quote}They don't care.{quote}

I prefer to think that they're not yet properly educated in the importance of compatibility.
In the cases I've seen where something was rushed through because a vendor needed to keep
a promise, the results were often suboptimal. The first step to reining that kind of behavior
in is having and clear and comprehensive policies. That's the point of this JIRA. The next
step is making the policies front and center in the development process. There isn't a JIRA
for that one yet.

I don't think we're in disagreement.

> Tighten up our compatibility guidelines for Hadoop 3
> ----------------------------------------------------
>
>                 Key: HADOOP-13714
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13714
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 2.7.3
>            Reporter: Karthik Kambatla
>            Assignee: Daniel Templeton
>            Priority: Blocker
>         Attachments: HADOOP-13714.WIP-001.patch
>
>
> Our current compatibility guidelines are incomplete and loose. For many categories, we
do not have a policy. It would be nice to actually define those policies so our users know
what to expect and the developers know what releases to target their changes. 



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