Mailing-List: contact cloudstack-dev-help@incubator.apache.org; run by ezmlm
Precedence: bulk
Reply-To: cloudstack-dev@incubator.apache.org
Received-SPF: pass (athena.apache.org: domain of jburwell@basho.com designates
 209.85.128.44 as permitted sender)
Content-Type: text/plain; charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\))
Subject: Re: [DISCUSS] Supported Java version
From: John Burwell <jburwell@basho.com>
In-Reply-To: 
 <B1DF26ECC0458748AC97CECE2DA98D41013175648DBD@SJCPMAILBOX01.citrite.net>
Date: Tue, 26 Feb 2013 16:42:55 -0500
Cc: Noa Resare <noa@spotify.com>,
 Frank Zhang <Frank.Zhang@citrix.com>
Content-Transfer-Encoding: quoted-printable
Message-Id: <58916DAC-488B-4AB6-87A1-799C06C4F9A5@basho.com>
References: <512B49BB.8040404@widodh.nl>
 <20130225150001.GC81779@USLT-205755.sungardas.corp>
 <CANc7MVyAJOPD=ca7q2a9h=3YQDuYWNc_69M4HoxMCDTi5kR3gQ@mail.gmail.com>
 <21455F1B-E0F9-44BC-8B9A-6FD3839D51F1@basho.com>
 <CANc7MVwi6NWBnLS_B1i74_ic_zdJVh_OsJVMVKHsEKv3rgewdQ@mail.gmail.com>
 <B1DF26ECC0458748AC97CECE2DA98D41013175648DBD@SJCPMAILBOX01.citrite.net>
To: cloudstack-dev@incubator.apache.org

Alex,

I think we are in violent agreement.  I am only advocating for a build =
tested on JRE7, and listed as officially supported in our docs.  Using =
the Java7 features is a completely different discussion.

Thanks,
-John

On Feb 26, 2013, at 3:52 PM, Alex Huang <alex.huang@citrix.com> wrote:

> +1 That's exactly what I said in my reply as well.  Support for Java7 =
means we test with JRE7 in 4.1 but support for Java7 does not mean we =
should push for deprecating JRE6 support.
>=20
> --Alex
>=20
> From: Noa Resare [mailto:noa@spotify.com]
> Sent: Tuesday, February 26, 2013 12:35 PM
> To: cloudstack-dev@incubator.apache.org
> Cc: Frank Zhang; Alex Huang
> Subject: Re: [DISCUSS] Supported Java version
>=20
> java 6 may be end-of-line'd by Oracle, but the OpenJDK is shipping as =
part of the enterprise distributions and as such will be supported in =
i.e. Debian Wheezy for at least years into the future.
>=20
> I'm not talking about not supporting java 7, the java ecosystem has =
traditionally been very good at supporting code targeting =
current_version - 1, but I propose we avoid using language features and =
quirks that break java 6 compatibility.
>=20
> /n
>=20
> On Mon, Feb 25, 2013 at 5:04 PM, John Burwell =
<jburwell@basho.com<mailto:jburwell@basho.com>> wrote:
> Noa,
>=20
> I think of one very good reason -- as of this month, Java6 has been =
EOL'ed [1] by Oracle (i.e. no more updates).  Given the number of =
security issues that have cropped in Java lately, it seems prudent, in =
my mind, to ensure that the next release runs on an officially supported =
JRE.  Also, OpenJDK 7 is widely available for modern distributions (see =
openjdk-7 packages in Ubuntu 12.04 and java-1.7.0-openjdk in RHEL/CentOS =
6.3).
>=20
> Thanks,
> -John
>=20
> [1]: http://www.oracle.com/technetwork/java/eol-135779.html
> On Feb 25, 2013, at 10:24 AM, Noa Resare =
<noa@spotify.com<mailto:noa@spotify.com>> wrote:
>=20
>> Unless someone comes with a very good argument to drop java 6 =
compatibility
>> (and make a good case for it in in public and gather consensus) I =
would
>> consider this a bug that needs to be fixed.
>>=20
>> /noa
>>=20
>>=20
>> On Mon, Feb 25, 2013 at 4:00 PM, Chip Childers =
<chip.childers@sungard.com<mailto:chip.childers@sungard.com>>wrote:
>>=20
>>> I didn't think that we agreed to bumping the java version to 7, and =
it
>>> seems like that might make working with distros / packages =
difficult.
>>>=20
>>> Adding Alex and Frank to the CC to get their take.
>>>=20
>>> On Mon, Feb 25, 2013 at 12:23:39PM +0100, Wido den Hollander wrote:
>>>> Hi,
>>>>=20
>>>> So the last couple of days the master branch wouldn't build on my
>>> systems:
>>>>=20
>>>> [INFO] Apache CloudStack Framework - IPC ................. FAILURE
>>> [1.874s]
>>>> ...
>>>> ...
>>>> [INFO]
>>> =
------------------------------------------------------------------------
>>>> [ERROR] Failed to execute goal
>>>> org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile
>>>> (default-compile) on project cloud-framework-ipc: Compilation
>>>> failure: Compilation failure:
>>>> [ERROR]
>>> =
/home/employee/wido/repos/cloudstack/framework/ipc/src/org/apache/cloudsta=
ck/framework/rpc/RpcServerCallImpl.java:[51,58]
>>>> type parameters of <T>T cannot be determined; no unique maximal
>>>> instance exists for type variable T with upper bounds
>>>> T,java.lang.Object
>>>> [ERROR]
>>> =
/home/employee/wido/repos/cloudstack/framework/ipc/src/org/apache/cloudsta=
ck/framework/rpc/RpcClientCallImpl.java:[191,60]
>>>> type parameters of <T>T cannot be determined; no unique maximal
>>>> instance exists for type variable T with upper bounds
>>>> T,java.lang.Object
>>>>=20
>>>> So I'm running Ubuntu 12.04.1 on all my systems (laptop, desktop,
>>>> servers) and this is the maven information:
>>>>=20
>>>> wido@wido-desktop:~$ mvn -v
>>>> Apache Maven 3.0.4
>>>> Maven home: /usr/share/maven
>>>> Java version: 1.6.0_27, vendor: Sun Microsystems Inc.
>>>> Java home: /usr/lib/jvm/java-6-openjdk-amd64/jre
>>>> Default locale: en_US, platform encoding: UTF-8
>>>> OS name: "linux", version: "3.2.0-38-generic", arch: "amd64", =
family:
>>> "unix"
>>>> wido@wido-desktop:~$
>>>>=20
>>>> Now, that Java version is old, I know, but it's the openjdk version
>>>> which is in Ubuntu 12.04's repositories right now.
>>>>=20
>>>> I downloaded Java 7:
>>>>=20
>>>> wido@wido-desktop:~/repos/cloudstack$ JAVA_HOME=3D"/opt/jdk1.7.0_15" =
mvn
>>> -v
>>>> Apache Maven 3.0.4
>>>> Maven home: /usr/share/maven
>>>> Java version: 1.7.0_15, vendor: Oracle Corporation
>>>> Java home: /opt/jdk1.7.0_15/jre
>>>> Default locale: en_US, platform encoding: UTF-8
>>>> OS name: "linux", version: "3.2.0-38-generic", arch: "amd64", =
family:
>>> "unix"
>>>> wido@wido-desktop:~/repos/cloudstack$
>>>>=20
>>>> With that Java version the master branch builds just fine.
>>>>=20
>>>>=20
>>>> What I want to discuss which version of Java we support.
>>>>=20
>>>> I'd say we support the LTS version of any major release of CentOS =
or
>>> Ubuntu.
>>>>=20
>>>> I also understand that Java 6 is pretty old, so what do we do?
>>>>=20
>>>> Wido
>>>>=20
>>>=20
>>=20
>>=20
>>=20
>> --
>> Engineering Experience, Infrastructure tribe, Spotify
>=20
>=20
>=20
> --
> Engineering Experience, Infrastructure tribe, Spotify
>=20