Eric Baldeschwieler wrote:
I think we should also add an available RAM variable and then do a reasonable job of deriving a bunch of the other variables in these settings from that (we may need one for task trackers, one for namenodes and so on.
I filed an issue for this: https://issues.apache.org/jira/browse/HADOOP-1867 I also filed an issue for simplifying cluster configuration: https://issues.apache.org/jira/browse/HADOOP-1850
What RAM size should we assume is a reasonable default? 2GB? 1GB?
1GB seems like a reasonable default today. We should err on the low side, since that will give a better initial experience. We could even try to configure some of this automatically, based on /proc/meminfo. (That works on Linux and Cygwin. Does it work on OSX?)
Doug
