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Posted to common-user@hadoop.apache.org by mg <us...@gmail.com> on 2012/08/16 18:22:34 UTC

Relevance of mapreduce.* configuration properties for MR V2

Hi,

I am currently trying to tune a CDH 4.0.1 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 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 or not.

Can anyone clarify or point to respective documentation?

Thanks,
Martin