OpenJDK vs Sun JDK Versions

[Keith Kowalczykowski]

Hi Everyone,

Thanks for the prompt responses, and helping me better undersand the
OpenJDK/SunJDK ecosystem. The real issue I am trying to solve is why bug
#6701268 ( 
http://bugs.sun.com/bugdatabase/view_bug.do%3Bjsessionid=c68647757f5376e418b
1b1b8e31?bug_id=6701268) is present in my current build (1.6.0_0-b11) of
OpenJDK.

Looking at the comments, it regressed in 6u10-b23 and was supposed to be
"resolved in JDK 6u10-b25 with the fix for 6698652". Therefore its unclear
to me how it wound up in OpenJDK, unless a source drop was made between b23
and b25 (or potentially the reported point of regession is wrong).

Either way, its somewhat disconcerting that OpenJDK is being pushed by all
of the major distros, but does not have the same set of patches/bugfixes as
Sun's own JDK. Furthermore, there is no easy way of telling what comparable
Sun JDK that OpenJDK is currently targeting, or whether a bug in the Sun JDK
has even been fixed in OpenJDK. As the adoption of OpenJDK has accelerated
in the major distros, I think Sun should strongly reconsider this
forked-approach, as it causes major headaches for developers/sysadmins.

    -Keith


On 5/11/09 3:25 PM, "Andrew John Hughes" <gnu_andrew at member.fsf.org> wrote:

> 2009/5/11 Keith Kowalczykowski <keith at app2you.com>:
>> Hi Everyone,
>> 
>>    I'm a little bit confused about the version numbering of openjdk 6 vs
>> the current JDK provided by Sun. Looking at an install of openjdk from
>> debian (lenny), it lists itself as:
>> 
>> java version "1.6.0_0"
>> OpenJDK  Runtime Environment (build 1.6.0_0-b11)
>> 
>> Now, if I'm reading this correctly, this is essentially "update 0" or the
>> initial release of the jdk. Therefore, I have two questions:
>> 
>> 1) Am I reading this correctly? In the sun jdk, the _X would be the update
>> number, so I'm assuming this is update 0.
>> 
> 
> The _0 is only there to appease (broken) Java applications that expect
> it to exist.  There are no such 'update' releases for OpenJDK, just
> build drops (b11 in your example).  Newer versions should also give
> the version of IcedTea which was used to build OpenJDK.
> 
>> 2) Assuming I'm reading this correctly, why aren't any of the updates in the
>> open JDK?
> 
> It's a different codebase.  What is now OpenJDK6 was derived from
> OpenJDK7, which itself came from some point along the JDK6 update
> process.  OpenJDK6 has some of the updates in u10 I believe, but not
> all.
> 
>> 
>> Thanks in advance for you help.
>> 
>>    -Keith
>> 
>> 
>> 
> 
>