Hi, I was reading on this link
http://hortonworks.com/blog/apache-hadoop-yarn-concepts-and-applications/ that we can implement an Application Master to manage multiple applications. The text reads like this: *It’s useful to remember that, in reality, every application has its own instance of an ApplicationMaster. However, it’s completely feasible to implement an ApplicationMaster to manage a set of applications (e.g. ApplicationMaster for Pig or Hive to manage a set of MapReduce jobs). * How is it possible? Do they have different application IDs and are they treated as different applications on the cluster? What are the positive/negative implications of it? Is it a recommended way? Thanks, Kishore
