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
