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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2455) Remove deprecated JobTracker.State in favour of JobTrackerStatus
Date Fri, 27 May 2011 18:30:48 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040367#comment-13040367
] 

Tom White commented on MAPREDUCE-2455:
--------------------------------------

> In fact, I'd go further and actually consider removing this api.

I agree with the sentiment. ClusterStatus shouldn't be used as a monitoring API, since metrics
(or other monitoring systems) should be used for that purpose. In particular, the API that
ClusterStatus (or ClusterMetrics in the new API) exposes doesn't fit with MAPREDUCE-279. It's
premature to remove them in 0.23, but it makes sense to consider replacements for them.

Of course, we still need this JIRA to move forward with MAPREDUCE-1638 and the code organization
for MAPREDUCE-279. 

> Remove deprecated JobTracker.State in favour of JobTrackerStatus
> ----------------------------------------------------------------
>
>                 Key: MAPREDUCE-2455
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2455
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: build, client
>            Reporter: Tom White
>            Assignee: Tom White
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2455.patch
>
>
> MAPREDUCE-2337 deprecated getJobTrackerState() on ClusterStatus, this issue is to remove
the getter (in favour of getJobTrackerStatus(), which will remain) so there is no longer a
direct dependency of the public API on JobTracker. This is for MAPREDUCE-1638.

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