So for next steps, should someone (aka me) try to build against a 3.X Hadoop to 
see where the jolts are? Does that make sense as a way to gather more info? I 
would just go ahead and do it, but lacking (as I do) any Hadoop dev experience, 
I want to make sure that it's a good idea before investing time.

---
A. Soroka
The University of Virginia Library

> On Mar 31, 2017, at 5:11 AM, Rob Vesse <rve...@dotnetrdf.org> wrote:
> 
> My impression is that 3.0 is still a long way off a generally available 
> release since they are still in Alpha at the moment.
> 
> I would expect that 2.x would remain the primary distribution for a while yet.
> 
> I don’t know how much, If at all, map/reduce has changed so it may already be 
> possible to build Elephas against 3.X without any changes but then again it 
> might not.
> 
> I’m not sure that it is necessarily safe to stop shading Guava. It is a 
> widely used library with poor compatibility between versions and our users 
> may experience Version conflicts in other environments.
> 
> Rob
> 
> On 29/03/2017 00:18, "Bruno P. Kinoshita" <ki...@apache.org> wrote:
> 
>> I would think we could go with a minor version for this, no? Or is 
>    Elephas such a big part of our offering that we need to make a major 
>    release to move with Hadoop...?
> 
> 
>    I would think the same. Unless we have other important features to be 
> released, maybe something that breaks backward compatibility, etc.
> 
> 
> 
>    ________________________________
>    From: A. Soroka <aj...@virginia.edu>
>    To: dev@jena.apache.org 
>    Sent: Wednesday, 29 March 2017 3:20 AM
>    Subject: Re: [jira] [Updated] (HADOOP-10101) Update guava dependency to 
> the latest version
> 
> 
> 
>> * Jena would have to move in step with Hadoop and drop support for older 
>> versions.
> 
>    Maybe we can see what Hadoop itself ends up doing for this problem... they 
> are targeting their own major release 3 for this. I would think we could go 
> with a minor version for this, no? Or is Elephas such a big part of our 
> offering that we need to make a major release to move with Hadoop...?
> 
>    ---
>    A. Soroka
>    The University of Virginia Library
> 
> 
>> On Mar 25, 2017, at 7:15 AM, Andy Seaborne <a...@apache.org> wrote:
>> 
>> 
>> Step 1: upgrade jena-shaded-guava to v21.0
>> 
>> and see if it works.
>> 
>> 
>> There are at least two considerations:
>> 
>> * Jena would have to move in step with Hadoop
>> and drop support for older versions.
>> * Our downstream users may have guava version choices.
>> 
>> and we have to wait until a Hadoop release to remove it.
>> 
>>   Andy
>> 
>> On 25/03/17 01:22, A. Soroka wrote:
>>> Looks like Hadoop has successfully updated their Guava dependency-- this 
>>> might provide us the opportunity to stop shading Guava. (yay!)
>>> 
>>> ---
>>> A. Soroka
>>> The University of Virginia Library
>>> 
>>>> Begin forwarded message:
>>>> 
>>>> From: "Tsuyoshi Ozawa (JIRA)" <j...@apache.org>
>>>> Subject: [jira] [Updated] (HADOOP-10101) Update guava dependency to the 
>>>> latest version
>>>> Date: March 24, 2017 at 9:18:42 PM EDT
>>>> To: aj...@apache.org
>>>> 
>>>> 
>>>>   [ 
>>>> https://issues.apache.org/jira/browse/HADOOP-10101?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
>>>>  ]
>>>> 
>>>> Tsuyoshi Ozawa updated HADOOP-10101:
>>>> ------------------------------------
>>>>     Resolution: Fixed
>>>>  Fix Version/s: 3.0.0-alpha3
>>>>         Status: Resolved  (was: Patch Available)
>>>> 
>>>> Committed this to trunk. Thanks Nicholas and Steve for your review, and 
>>>> thanks people who joined this issue for your comments.
>>>> 
>>>>> Update guava dependency to the latest version
>>>>> ---------------------------------------------
>>>>> 
>>>>>              Key: HADOOP-10101
>>>>>              URL: https://issues.apache.org/jira/browse/HADOOP-10101
>>>>>          Project: Hadoop Common
>>>>>       Issue Type: Improvement
>>>>> Affects Versions: 3.0.0-alpha2
>>>>>         Reporter: Rakesh R
>>>>>         Assignee: Tsuyoshi Ozawa
>>>>>           Labels: BB2015-05-TBR
>>>>>          Fix For: 3.0.0-alpha3
>>>>> 
>>>>>      Attachments: HADOOP-10101-002.patch, HADOOP-10101-004.patch, 
>>>>> HADOOP-10101-005.patch, HADOOP-10101-006.patch, HADOOP-10101-007.patch, 
>>>>> HADOOP-10101-008.patch, HADOOP-10101-009.patch, HADOOP-10101-009.patch, 
>>>>> HADOOP-10101-010.patch, HADOOP-10101-010.patch, HADOOP-10101-011.patch, 
>>>>> HADOOP-10101.012.patch, HADOOP-10101.013.patch, HADOOP-10101.014.patch, 
>>>>> HADOOP-10101.015.patch, HADOOP-10101.016.patch, HADOOP-10101.017.patch, 
>>>>> HADOOP-10101.018.patch, HADOOP-10101.patch, HADOOP-10101.patch
>>>>> 
>>>>> 
>>>>> The existing guava version is 11.0.2 which is quite old. This issue tries 
>>>>> to update the version to as latest version as possible.
>>>> 
>>>> 
>>>> 
>>>> --
>>>> This message was sent by Atlassian JIRA
>>>> (v6.3.15#6346)
>>> 
> 
> 
> 
> 
> 

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