The proposal sounds good. Supporting and maintaining hadoop-1 is hard and conflict in API changes in 2.x of hadoop keeps us from using new and better APIs as it breaks compilation.
+1 Thanks Vikram. On Mon, May 11, 2015 at 7:17 PM, Sergey Shelukhin <ser...@hortonworks.com> wrote: > That sounds like a good idea. > Some features could be back ported to branch-1 if viable, but at least new > stuff would not be burdened by Hadoop 1/MR code paths. > Probably also a good place to enable vectorization and other perf features > by default while we make alpha releases. > > +1 > > On 15/5/11, 15:38, "Alan Gates" <alanfga...@gmail.com> wrote: > >>There is a lot of forward-looking work going on in various branches of >>Hive: LLAP, the HBase metastore, and the work to drop the CLI. It >>would be good to have a way to release this code to users so that they >>can experiment with it. Releasing it will also provide feedback to >>developers. >> >>At the same time there are discussions on whether to keep supporting >>Hadoop-1. The burden of supporting older, less used functionality such >>as Hadoop-1 is becoming ever harder as many new features are added. >> >>I propose that the best way to deal with this would be to make a >>branch-1. We could continue to make new feature releases off of this >>branch (1.3, 1.4, etc.). This branch would not drop old functionality. >>This provides stability and continuity for users and developers. >> >>We could then merge these new features branches (LLAP, HBase metastore, >>CLI drop) into the trunk, as well as turn on by default newer features >>such as the vectorization and ACID. We could also drop older, less used >>features such as support for Hadoop-1 and MapReduce. It will be a while >>before we are ready to make stable, production ready releases of this >>code. But we could start making alpha quality releases soon. We would >>call these releases 2.x, to stress the non-backward compatible changes >>such as dropping Hadoop-1. This will give users a chance to play with >>the new code and developers a chance to get feedback. >> >>Thoughts? > -- Nothing better than when appreciated for hard work. -Mark
