Re: [DISCUSS] About the details of JDK-8 support

> On 17 Oct 2015, at 15:42, Allen Wittenauer wrote: > > > > > FYI: > > I’ve switched HADOOP to Apache Yetus (from the YETUS-83 branch) in > multijdk mode with jdk7 and jdk8 turned on. (So java patches will take *twice > as long* since they aren’t done in

Re: [DISCUSS] About the details of JDK-8 support

On Oct 17, 2015, at 8:55 AM, Steve Loughran wrote: >> > > thx for doing this, I'll keep an eye on the builds Thanks for helping out too. You never know how software actually runs in the wild. I’m already hitting bugs that didn’t show up in testing. *sigh* > one

Re: [DISCUSS] About the details of JDK-8 support

> On 15 Oct 2015, at 00:28, Allen Wittenauer wrote: > > > If people want, I could setup a cut off of yetus master to run the jenkins > test-patch. (multiple maven repos, docker support, multijdk support, … ) > Yetus would get some real world testing out of it and hadoop

Re: [DISCUSS] About the details of JDK-8 support

+1 On Thu, Oct 15, 2015 at 7:57 AM, Steve Loughran wrote: > > > On 15 Oct 2015, at 14:42, Karthik Kambatla wrote: > > > > On Wed, Oct 14, 2015 at 4:28 PM, Allen Wittenauer > wrote: > > > >> > >> If people want, I could setup a

Re: [DISCUSS] About the details of JDK-8 support

> On 15 Oct 2015, at 14:42, Karthik Kambatla wrote: > > On Wed, Oct 14, 2015 at 4:28 PM, Allen Wittenauer wrote: > >> >> If people want, I could setup a cut off of yetus master to run the jenkins >> test-patch. (multiple maven repos, docker support,

Re: [DISCUSS] About the details of JDK-8 support

On Wed, Oct 14, 2015 at 4:28 PM, Allen Wittenauer wrote: > > If people want, I could setup a cut off of yetus master to run the jenkins > test-patch. (multiple maven repos, docker support, multijdk support, … ) > Yetus would get some real world testing out of it and hadoop

Re: [DISCUSS] About the details of JDK-8 support

> We should target source-level support of JDK 8 too, around which you outlined > a bunch of issues around dependencies. I also found a bunch of issues around > generating documentation, site etc. I propose that we track them under the > umbrella JIRA and make progress there first. OK. I will

Re: [DISCUSS] About the details of JDK-8 support

> On 13 Oct 2015, at 17:32, Haohui Mai wrote: > > Just to echo Steve's idea -- if we're seriously considering supporting > JDK 8, maybe the first thing to do is to set up the jenkins to run > with JDK 8? I'm happy to help. Does anyone know who I can talk to if I > need to

Re: [DISCUSS] About the details of JDK-8 support

The only problem with trying to get the JDK 8 trunk builds green (or blue I guess) is that it's like trying to hit a moving target because of how many new commits keep coming in. I was looking at fixing these a while ago, and managed to at least make them compile and fixed (or worked with others

Re: [DISCUSS] About the details of JDK-8 support

If people want, I could setup a cut off of yetus master to run the jenkins test-patch. (multiple maven repos, docker support, multijdk support, … ) Yetus would get some real world testing out of it and hadoop common-dev could stop spinning in circles over some of the same issues month after

Re: [DISCUSS] About the details of JDK-8 support

If you see the community discussion thread on 2.8, my proposal was to support *both* JDK 7 and JDK 8 first. The last time we had discussion about dropping JDKs it wasn’t fun, so let’s not go there for now. In terms of runtime support for JDK 8, yes, there is vast evidence that things already

Re: [DISCUSS] About the details of JDK-8 support

Just to echo Steve's idea -- if we're seriously considering supporting JDK 8, maybe the first thing to do is to set up the jenkins to run with JDK 8? I'm happy to help. Does anyone know who I can talk to if I need to play around with all the Jenkins knob? ~Haohui On Tue, Oct 13, 2015 at 8:24 AM,

Re: [DISCUSS] About the details of JDK-8 support

.@hadoop.apache.org>; "hdfs-dev@hadoop.apache.org" <hdfs-dev@hadoop.apache.org>; dev <d...@hbase.apache.org>; "yarn-...@hadoop.apache.org" <yarn-...@hadoop.apache.org> Sent: Tuesday, October 13, 2015 5:00 AM Subject: Re: [DISCUSS] About the details of JDK

Re: [DISCUSS] About the details of JDK-8 support

Yes, at least for us, dropping the java 7 support (e.g. moving to java 8 source-wise) **at this point** would be an issue. I concur with the sentiment that we should preserve the java 7 support on branch-2 (not not move to java 8 source level) but can consider it for trunk. My 2 cents. Thanks,

Re: [DISCUSS] About the details of JDK-8 support

> On 7 Oct 2015, at 22:39, Elliott Clark wrote: > > On Mon, Oct 5, 2015 at 5:35 PM, Tsuyoshi Ozawa wrote: > >> Do you have any concern about this? I’ve not >> tested with HBase yet. >> > > We've been running JDK 8u60 in production with Hadoop 2.6.X and

Re: [DISCUSS] About the details of JDK-8 support

> > > On 7 Oct 2015, at 17:23, Andrew Wang wrote: > > > > We've been supporting JDK8 as a runtime for CDH5 for a while now (meaning > > the full stack including HBase), so I agree that we're good there. > > > > > with Kerberos on? > > Yea, I haven't been that involved

Re: [DISCUSS] About the details of JDK-8 support

Thanks for clear summary, Tsuyoshi. I read some related past discussions. https://wiki.apache.org/hadoop/MovingToJdk7and8 http://search-hadoop.com/m/uOzYtGSiCs1acRnh http://search-hadoop.com/m/uOzYthdWJqpGdSZ1 Though there seems to be no consensus about when to drop java 7 support yet,

Re: [DISCUSS] About the details of JDK-8 support

> On 7 Oct 2015, at 07:29, Masatake Iwasaki wrote: > > Thanks for clear summary, Tsuyoshi. > > I read some related past discussions. > > https://wiki.apache.org/hadoop/MovingToJdk7and8 > http://search-hadoop.com/m/uOzYtGSiCs1acRnh >

Re: [DISCUSS] About the details of JDK-8 support

We've been supporting JDK8 as a runtime for CDH5 for a while now (meaning the full stack including HBase), so I agree that we're good there. I'm against dropping JDK7 support though in branch-2. Even bumping dependency versions scares me, since it often leads to downstream pain. Any comment about

Re: [DISCUSS] About the details of JDK-8 support

> On 7 Oct 2015, at 17:23, Andrew Wang wrote: > > We've been supporting JDK8 as a runtime for CDH5 for a while now (meaning > the full stack including HBase), so I agree that we're good there. > with Kerberos on? > I'm against dropping JDK7 support though in

Re: [DISCUSS] About the details of JDK-8 support

Hello Thank you for sharing information about JDK support discussion. I'd like to share what I know now. In terms of runtime level support, we've tried JDK8 with HDP2.3. Although of course there may be several diffs between HDP and upstream(trunk, branch-2), it is generally working well. We

Re: [DISCUSS] About the details of JDK-8 support

I forgot to mention - we also need to upgrade Google Guice to 0.4.0 for source-level JDK8 support in addition to asm and cglib. https://github.com/google/guice/wiki/Guice40 > Some highlights: > Java8 runtime compatibility for Guice core & all extensions. Best regards, - Tsuyoshi On Tue, Oct 6,

[DISCUSS] About the details of JDK-8 support

Hi commiters and users of Hadoop stack, I’ll share the current status of JDK-8 support here. We can take a two-step approach to support JDK-8 - runtime-level support and source-level support. About runtime-level support, I’ve tested Hadoop stack with JDK-8 e.g. MapReduce, Spark, Tez, Flink on