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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15821) Move Hadoop YARN Registry to Hadoop Registry
Date Fri, 05 Oct 2018 10:42:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16639643#comment-16639643

Steve Loughran commented on HADOOP-15821:

it was always intended to be moveable; everything, eventually, needs a lookup mechanism. Hence
the packaging.

* anything which has an explicit dependency on the yarn-registry artifact isn't going to build
any more. It'll need a stub POM
* the imports are being reordered a lot, and not into the "recommended" hadoop order either.
Can you leave them as close to the originals as possible, as import reorderings always make
cherry picking such a PITA. (I know, it's a move, but still)
* moving to loading configuration over YarnConfiguration means that yarn-site.xml isn't going
to get picked up. If that's where any deployment configures the registry, things will break.
I propose using some reflection game to instantiate a YarnConfiguration instance if it's on
the classpath.
* yes, move the .tla file; probably needs editing & a rebuild of the PDF too. I should
help there (maybe: make editing this a followup & assign to me, unless you want to learn
* Why the changes to RegistryDNS? 

> Move Hadoop YARN Registry to Hadoop Registry
> --------------------------------------------
>                 Key: HADOOP-15821
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15821
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Íñigo Goiri
>            Assignee: Íñigo Goiri
>            Priority: Major
>         Attachments: HADOOP-15821.000.patch, HADOOP-15821.001.patch, HADOOP-15821.002.patch
> Currently, Hadoop YARN Registry is in YARN. However, this can be used by other parts
of the project (e.g., HDFS). In addition, it does not have any real dependency to YARN.
> We should move it into commons and make it Hadoop Registry.

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