I recently filed 5 issues (HIVE-10430, 10431, 10442, 10443, 10444) related to build breakage of hadoop-1. There could potentially be more breakage. Some patches were added to reduce the number of file systems calls to improve performance but with supporting hadoop-1 we cannot directly use such APIs. Also we are not enforcing hadoop-1 build checks in hive QA to make sure every commit comes out clean on hadoop-1 and hadoop-2. I think it will be good if we can focus only hadoop-2. Not only it will simplify development but also will reduce the shims layer.
Thanks Prasanth > On Apr 28, 2015, at 4:40 PM, Owen O'Malley <omal...@apache.org> wrote: > > It has been three years since Hadoop 2.0.0 was first released and I believe > that the vast majority of users that want to run Hive 1.x have moved over > to Hadoop 2.x already. It will dramatically simplify Hive development if we > drop backwards compatibility with the old Hadoop 1.x line. > > Thanks, > Owen
