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From mg <userformailingli...@gmail.com>
Subject Relevance of mapreduce.* configuration properties for MR V2
Date Thu, 16 Aug 2012 16:28:57 GMT
Hi,

I am currently trying to tune a CDH 4.0.1 (i~ hadoop 2.0.0-alpha) 
cluster running HDFS, YARN, and HBase managed by Cloudera Manager 4.0.3 
(Free Edition).

In CM, there are a number of options for setting mapreduce.* 
configuration properties on the YARN client page.

Some of the properties and their explanations in the GUI still refer to 
JobTracker and TaskTracker, e.g.,
- mapreduce.jobtracker.handler.count,
- mapreduce.tasktracker.map.tasks.maximum,
- mapreduce.tasktracker.reduce.tasks.maximum

I wonder whether these and a number of other mapreduce.* (e.g., 
mapreduce.job.reduces) properties are observed by the MR2 
ApplicationMaster (and how), or not.

Can anyone clarify or point to respective documentation?

Thanks,
Martin

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