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" <[email protected]> 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 <[email protected]>
    To: [email protected] 
    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 <[email protected]> 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)" <[email protected]>
    >>> Subject: [jira] [Updated] (HADOOP-10101) Update guava dependency to the 
latest version
    >>> Date: March 24, 2017 at 9:18:42 PM EDT
    >>> To: [email protected]
    >>> 
    >>> 
    >>>    [ 
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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