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https://issues.apache.org/jira/browse/MAPREDUCE-2864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13091006#comment-13091006
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Robert Joseph Evans commented on MAPREDUCE-2864:
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Currently there are a few configs that are not intended to be set by admins or
by the end user. They are configs that are set by the system and consumed by
the system.
For MRInternalConf this is just yarn.history.create.intermediate.base.dir which
is set by the client and is currently always set to TRUE. It is consumed by
the Application Master when it creates the JHist file informing it to create
the base directory if it does not currently exist.
YarnInternalConfig has yarn.security.info.class.name and
yarn.server.nodemanager.debug.delete.delay in it. The first one is set at
startup by each server to indicate the class that will handle security. The
second one is a bit different and I wasn't sure if it should be in there or
not. It is a config that was added in to support some unit tests. It avoids
deleting temporary files for a specific amount of time. This way the tests can
look at the files before they are removed.
All of them I could move into *AdminConfig without any problem. I would just
put a comment on them saying why they should not be used.
> Renaming of configuration property names in yarn
> ------------------------------------------------
>
> Key: MAPREDUCE-2864
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2864
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobhistoryserver, mrv2, nodemanager, resourcemanager
> Affects Versions: 0.23.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Fix For: 0.23.0
>
> Attachments: yarnConfigs.csv
>
>
> Now that YARN has been put in to trunk we should do something similar to
> MAPREDUCE-849. We should go back and look at all of the configurations that
> have been added in and rename them as needed to be consistent and subdivided
> by component.
> # We should use all lowercase in the config names. e.g., we should use
> appsmanager instead of appsManager etc.
> # history server config names should be prefixed with mapreduce instead of
> yarn.
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