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Subject: Re: Ubuntu 12.04 - Which JDK?
From: Alexander Lorenz <wget.null@gmail.com>
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Date: Thu, 8 Nov 2012 08:22:20 +0100
Cc: "ac@hsk.hk" <ac@hsk.hk>
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To: user@hadoop.apache.org

Recommend JDK 1.6.3x, 1.7 has serval issues within NIO and I wouldn't =
use them in production, OpenJDK has sometimes a odd behavior and IBM's =
JDK - no.

cheers,
 Alex=20

On Nov 8, 2012, at 7:17 AM, Sanjeev Verma <sanjeev.x.verma@gmail.com> =
wrote:

> AFAIK, openjdk can be used to run hadoop. Why do you want to build =
hadoop
> from source? Get precompiled binaries and you will be ok.
>=20
> Also, you can install sun/oracle jdk on ubuntu. Just google for
> instructions, u will find plenty, like here -
> =
http://www.ubuntututorials.com/install-oracle-java-jdk-7-ubuntu-12-04/.
> These are for jdk 7, but you can follow the same to install jdk 6.
>=20
> Enjoy!
> On Nov 8, 2012 11:30 AM, "ac@hsk.hk" <ac@hsk.hk> wrote:
>=20
>> Hi,
>>=20
>> I am planning to use Ubuntu 12.04, from
>> http://wiki.apache.org/hadoop/HadoopJavaVersions, about OpenJDK
>>=20
>> "Note*: OpenJDK6 has some open bugs w.r.t handling of generics... so
>> OpenJDK cannot be used to compile hadoop mapreduce code in =
branch-0.23 and
>> beyond, please use other JDKs."
>>=20
>> Is it OK to use OpenJDK 7 in Ubuntu 12.04?
>>=20
>> Thanks
>>=20
>>=20

--
Alexander Alten-Lorenz
http://mapredit.blogspot.com
German Hadoop LinkedIn Group: http://goo.gl/N8pCF