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From Harsh J <ha...@cloudera.com>
Subject Re: what's counterpart for org.apache.hadoop.mapred.TaskTrackerMetricsInst in YARN
Date Tue, 04 Feb 2014 13:02:43 GMT
Unfortunately there isn't a direct equivalent available for plugging
in instrumentation classes in YARN's NodeManagers currently. The
closest I can locate is a comment hint in the NodeManagerMetrics class
that toys with the same idea:
https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/metrics/NodeManagerMetrics.java#L53

If you'll absolutely need this in YARN, can you please file a YARN
JIRA with the motivation on why?

On Tue, Feb 4, 2014 at 9:37 AM, Anfernee Xu <anfernee.xu@gmail.com> wrote:
> Hi,
>
> I'm migrating my application from MR v.1 to YARN, I do not know how to
> convert my class which extends
> org.apache.hadoop.mapred.TaskTrackerMetricsInst, I want this class to run as
> TaskTracker starts up, if I migrate to YARN, I want it to run as NodeManager
> starts up, so how can I make this happen?
>
> --
> --Anfernee



-- 
Harsh J

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