Doing a quick search - Hadoop 2.2 and beyond seem to work with Java 7 ( http://wiki.apache.org/hadoop/HadoopJavaVersions). Vendors have been shipping with Java 7 support for quite some time. That should take care of allowing Tez with Hadoop 2.2 libraries to work on older clusters, unless the users are still on Java 6 - in which case 0.8.0 would not be supported.
In terms of Hadoop versions supported, I think it'll be useful to have a separate discussion on which versions we want to support. There's been a fair amount of grief from ATS integration, builds breaking against older versions, etc. Thanks - Sid On Sat, May 16, 2015 at 12:44 PM, Gopal Vijayaraghavan <[email protected]> wrote: > Hi Hitesh, > > I think you took Prakash¹s question to be a statement. > > What is being suggested here is not "we drop support for all older hadoop > versions² - but is really ³switch to the same version² as every downstream > project. > > Let me repeat - we are *NOT* dropping support for older hadoop versions, > we are upping the minimum JDK version you can run the whole ecosystem on. > > For that measure, the Upstream sourceVersions don¹t matter, what matters > are downstream sourceVersions of tools which use Tez. > > Cheers, > Gopal > > On 5/16/15, 12:07 PM, "Hitesh Shah" <[email protected]> wrote: > > >Excellent point @Prakash. I would probably change my vote to a -0 on that > >point itself. > > > >It might be easier to say drop java6 support but harder to say we drop > >support for all older hadoop versions that need/support java 6. > > > >‹ Hitesh > > > >On May 15, 2015, at 10:29 PM, Prakash Ramachandran > ><[email protected]> wrote: > > > >> +1 non-binding on dropping 1.6. However given that we compile against > >>hadoop2.4 and hadoop2.2 which has requireJavaVersion 1.6 will it be an > >>issue? > >> > >> > >> > >> > >> On 5/16/15, 3:54 AM, "Hitesh Shah" <[email protected]> wrote: > >> > >>> +1 on dropping 1.6 support from 0.8.0 onwards. > >>> > >>> @Mohammad, Hadoop is dropping support for 1.6 from 2.7.0 onwards. I am > >>>guessing other ecosystem projects will soon follow suit. > >>> > >>> ‹ Hitesh > >>> > >>> On May 15, 2015, at 2:16 PM, Mohammad Islam <[email protected]> > wrote: > >>> > >>>> Hi Sid, > >>>> What are the statuses of other Hadoop projects? > >>>> > >>>> Overall, I'm +1 on this. > >>>> Regards, > >>>> Mohammad > >>>> > >>>> > >>>> > >>>> On Friday, May 15, 2015 10:57 AM, Siddharth Seth <[email protected]> > >>>>wrote: > >>>> > >>>> > >>>> Java 6 support ended quite a while ago. Trying to support it gets in > >>>>the way of using libraries which may work with Java 7 only (Netty for > >>>>example in TEZ-2450). I think we should move Tez 0.8 to work with Java > >>>>7 as the minimum version. Thoughts ? > >>>> > >>>> Thanks > >>>> - Sid > >>>> > >>>> > >>> > > > > >
