Keith, Happy to help.
When you mean .23 API, do you mean how to write your own applications on top of YARN? If so, you can start with hadoop-2 release docs: http://hadoop.apache.org/common/docs/r2.0.0-alpha/hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html There is also an example application (DistributedShell) you can look at for a simpler usage of YARN apis: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ As you are probably aware, MapReduce applications itself don't need to change when you move to using hadoop-2. thanks, Arun On May 23, 2012, at 3:18 PM, Keith Wiley wrote: > I have already preordered the third edition of Tom's book (obviously, I don't > have it yet since it won't be published until the end of the month), but > aside from that, I'm looking for good resources for learning how to program > to the .23 API. I have found several websites and articles that discuss the > philosophical differences between .20 and .23 but I'm looking for > teaching/learning resources for getting into the guts and actually > programming the thing. I'm pretty competent at .20 so I'm not looking for > starter-level hadoop stuff. Rather, I'm looking for transitional resources > to learn the specifics of the new design. > > Any ideas? How are people vetted on the older versions of hadoop learning > the way of the YARN? > > Thanks. > > ________________________________________________________________________________ > Keith Wiley kwi...@keithwiley.com keithwiley.com > music.keithwiley.com > > "And what if we picked the wrong religion? Every week, we're just making God > madder and madder!" > -- Homer Simpson > ________________________________________________________________________________ > -- Arun C. Murthy Hortonworks Inc. http://hortonworks.com/
