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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1759) Configuration settings can potentially disappear post YARN-1666
Date Mon, 03 Mar 2014 10:03:24 GMT

    [ https://issues.apache.org/jira/browse/YARN-1759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13917895#comment-13917895
] 

Steve Loughran commented on YARN-1759:
--------------------------------------

I think Hitesh's concern is of the workflow

# load YARN config
# subclass overrides values in its serviceInit()
# new YarnConfig overwrites this.

I'm not sure this happens, certainly {{new YarnConfig(Configuration)}} doesn't -it pops up
in a few places -hence some logic in {{AbstractService.init(Configuration)}} to recognise
and handle this situation by updating its own {{config}} field.

A small unit test should be able to replicate the problem if it does exist.

> Configuration settings can potentially disappear post YARN-1666
> ---------------------------------------------------------------
>
>                 Key: YARN-1759
>                 URL: https://issues.apache.org/jira/browse/YARN-1759
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Hitesh Shah
>
> By implicitly loading core-site and yarn-site again in the RM::serviceInit(), some configs
may be unintentionally overridden.



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