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From "Liu, Ming (Ming)" <ming....@esgyn.cn>
Subject 答复: Trafodion 2.0 & Java
Date Sat, 02 Apr 2016 10:52:38 GMT
Hi, Avinash,

That may be a known issue. Please refer to below:

Quote from Nitin
""Oracle JDK 1.8 introduced strict javadoc checking so it scans all the comments for potential
errors - seems this is one of those.
If you rerun the compile within the ant build but with an additional command-line option '-Xdoclint:none',
you may be able to get past this error.
- Nitin
"

I didn't have chance to try out Nitin's suggestion though... Maybe you can try it out?

Thanks,
Ming

-----邮件原件-----
发件人: Avinash Dongre [mailto:avinash@ampool.io] 
发送时间: 2016年4月2日 18:46
收件人: dev@trafodion.incubator.apache.org
主题: Re: Trafodion 2.0 & Java

I tried building with Sun JDK 1.8, but I am getting errors in REST module related to javadoc.
May be something wrong with my Build Setup.

Thanks
Avinash


________________________________________
From: Liu, Ming (Ming) <ming.liu@esgyn.cn>
Sent: 02 April 2016 16:11
To: dev@trafodion.incubator.apache.org
Subject: 答复: Trafodion 2.0 & Java

Now Trafodion can work with openJDK 1.7 and SunJDK 1.7, both are fine, so I assume it will
remain same in 1.8, but we have to test, hard to say now.

It seems HBase support JDK 1.8 from newly released HBase 1.2. And Trafodion is now working
on HBase 0.98 and Trafodion 2.0 will support HBase 1.1, but since HBase API stay compatible
after HBase 1.0, so moving to HBase 1.2 should take less effort than before. But IMHO, HBase
1.1 cannot run with JDK 1.8? If that is correct, I think we cannot change to JDK 1.8, since
Trafodion have some coprocessor to be loaded by HBase RS, I assume a jar built with JDK 1.8
may have problems to be loaded by a Java program built with JDK 1.7.
But if Trafodion 2.0 can support HBase 1.2, I think move to JDK 8 will be a good idea. But
that is not what we originally planned (HBase 1.2), so maybe this will postpone the release
of Trafodion 2.0? So need Steve to consider it more.

But I strongly vote to Pierre that Trafodion should start planning for JDK 8.

Currently, Trafodion java src code cannot directly built with JDK 8, I remember Nitin once
gave a very good suggestion to change an java build option, I would like to follow Nitin's
suggestion and do some initial investigation.

JDK change should be a major change, need more careful consideration of all. We should understand
all side effort of it before we can made the change. The major concern is compatibility of
various components, not only Trafodion, but also HDFS, HBase, Zookeeper, Hive, etc... If all
are moved to JDK 8, Trafodion should follow of course.

Thanks,
Ming

-----邮件原件-----
发件人: Avinash Dongre [mailto:avinash@ampool.io]
发送时间: 2016年4月2日 18:13
收件人: dev@trafodion.incubator.apache.org
主题: Re: Trafodion 2.0 & Java

1.8 should be from openJDK or SunJDK is fine ?

________________________________________
From: Selva Govindarajan <selva.govindarajan@esgyn.com>
Sent: 02 April 2016 07:27
To: dev@trafodion.incubator.apache.org
Subject: RE: Trafodion 2.0 & Java

Yes., maven build scripts need some changes for some of the Trafodion components java programs
to compile.

Selva
-----Original Message-----
From: Amanda Moran [mailto:amanda.moran@esgyn.com]
Sent: Friday, April 1, 2016 5:09 PM
To: dev@trafodion.incubator.apache.org
Subject: Re: Trafodion 2.0 & Java

We can run with 1.7 or 1.8 but building is probably very different.

Thanks!

Sent from my iPhone

> On Apr 1, 2016, at 5:07 PM, Steve Varnau <steve.varnau@esgyn.com> wrote:
>
> Pierre,
>
> We have long required Java 1.7, I don't know that anyone has tested 
> with 1.8.
>
> --Steve
>
>> -----Original Message-----
>> From: Pierre Smits [mailto:pierre.smits@gmail.com]
>> Sent: Friday, April 1, 2016 9:09 AM
>> To: dev@trafodion.incubator.apache.org
>> Subject: Trafodion 2.0 & Java
>>
>> Hi all,
>>
>> Is Trafodion 2.0. a JAVA 8 solution? Or?
>>
>> Best regards,
>>
>> Pierre Smits
>>
>> ORRTIZ.COM <http://www.orrtiz.com>
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