To close the loop, I have created HIVE-10597 to fix all the compilation errors on Hadoop 1. Once this is in, @Szehon, could you please include compilation on Hadoop-1 in precommit test?
Whether or when to remove Hadoop 1 deserves a formal [DISCUSS] thread. Thanks, Xuefu On Thu, Apr 30, 2015 at 12:53 PM, Sergey Shelukhin <ser...@hortonworks.com> wrote: > That runs the risk of not testing the code being committed against the > Hadoop version for which it¹s actually going to be used. > I¹d be +1 on deprecating Hadoop 1 support in a dot version (1.3?). It will > also provide impetus for people to upgrade. > > It will allow us to remove some shims tooŠ > > > On 15/4/29, 12:13, "Xuefu Zhang" <xzh...@cloudera.com> wrote: > > >I think whether and when to deprecate Hadoop-1 is better to be moved to an > >official [DISCUSS] thread. What I disliked is the sentiment that I felt > >when we decide to deprecate something just because it's unfortunately > >broken for one reason or the other. Nevertheless, we should fix these bugs > >at this moment. We fixed such issues in previous release as well. > > > >I concur that we should have caught these breakages before they made their > >way into the code. Previously we discussed about running pre-commit tests > >alternatively or even randomly with either Hadoop-1 or Hadoop-2 profile. > >Now it seems critical to do so. Thus, I support Szehon's proposal to make > >this happen. This is orthogonal to the deprecation discussion. > > > >Thanks, > >Xuefu > > > >On Wed, Apr 29, 2015 at 11:30 AM, Szehon Ho <sze...@cloudera.com> wrote: > > > >> Are you > >> > personally willing to do the work to make sure that Hive works with > >> Hadoop > >> > 1.x? There are five new jiras (HIVE-10430, 10431, 10442, 10443, 10444) > >> > because > >> > trunk currently does not work with Hadoop 1.x and no one noticed. > >> > >> We setup a Hadoop-1 build sometime back and made sure a lot of breakage > >> were fixed, but had not hooked it up to HiveQA (precommit) due to > >>concerns > >> of the time it would take to run these tests. It was a balance between > >> getting faster HiveQA results for everyone and testing all the paths, > >>even > >> today there are many paths we don't test. > >> > >> So if these JIRA's are fixed, would folks be amenable to alternate > >>testing > >> hadoop-1 and hadoop-2 on HiveQA precommit runs and for devs to not > >>commit > >> further breakages of Hadoop 1.x compat, for another release? Yes I do > >> understand its a burden to maintain hadoop-1. > >> > >> if you use HDP, CDH or other hadoop distro then hadoop-1.x and hive-1.2 > >> > combination does not exist. > >> > > >> > >> I think Apache is agnostic to specific vendors so should not discuss > >>based > >> on that, but vendors still have this combination, I know of users that > >>use > >> Hadoop-1 and latest Hive 1.1. > >> > >> Thanks, > >> Szehon > >> > >> On Wed, Apr 29, 2015 at 11:07 AM, Alexander Pivovarov < > >> apivova...@gmail.com> > >> wrote: > >> > >> > HDP and CDH distro are based on hadoop-2.x since 2013-2014 > >> > > >> > if you use HDP, CDH or other hadoop distro then hadoop-1.x and > >>hive-1.2 > >> > combination does not exist. > >> > hdp-1.3 has hive-0.11 > >> > cdh-4.7 has hive-0.10 > >> > > >> > The only way to install hive-1.2 on hadoop-1.x is to do it manually. > >> > But if you manually install hadoop components then most probably you > >>will > >> > install hadoop-2.x > >> > > >> > So, we can say that hadoop-1.x and hive-1.2 combination should not > >>exist > >> in > >> > real life scenario. > >> > > >> > > >> > > >> > On Wed, Apr 29, 2015 at 8:03 AM, Owen O'Malley <omal...@apache.org> > >> wrote: > >> > > >> > > On Tue, Apr 28, 2015 at 10:16 PM, Szehon Ho <sze...@cloudera.com> > >> wrote: > >> > > > >> > > > Yes, question is whether users want to run latest Hive version on > >> > Hadoop > >> > > > 1.x clusters. > >> > > > > >> > > > >> > > But you ignored the more important question that I asked. Are you > >> > > personally willing to do the work to make sure that Hive works with > >> > Hadoop > >> > > 1.x? There are five new jiras (HIVE-10430, 10431, 10442, 10443, > >>10444) > >> > > because > >> > > trunk currently does not work with Hadoop 1.x and no one noticed. > >> > > > >> > > Supporting Hadoop 1.x costs the Hive project a lot of work and > >>provides > >> > > very little in return. > >> > > > >> > > .. Owen > >> > > > >> > > >> > >
