Upgrading Guava version is tricky. While it helps in many cases, it can break existing applications/deployments. I understand we do not have a policy for updating dependencies, but still we should be careful with Guava.
I would be more inclined towards a more permanent solution to this problem - how about prioritizing classpath isolation so applications aren't affected by Hadoop dependency updates at all? I understand that will also break user applications, but it might be the driving feature for Hadoop 3.0? On Fri, Sep 19, 2014 at 5:13 PM, Sangjin Lee <sj...@apache.org> wrote: > I would also agree on upgrading guava. Yes I am aware of the potential > impact on customers who might rely on hadoop bringing in guava 11. However, > IMHO the balance tipped over to the other side a while ago; i.e. I think > there are far more people using guava 16 in their code and scrambling to > make things work than the other way around. > > On Thu, Sep 18, 2014 at 2:40 PM, Steve Loughran <ste...@hortonworks.com> > wrote: > > > I know we've been ignoring the Guava version problem, but HADOOP-10868 > > added a transitive dependency on Guava 16 by way of Curator 2.6. > > > > Maven currently forces the build to use Guava 11.0.2, but this is hiding > at > > compile timeall code paths from curator which may use classes & methods > > that aren't there. > > > > I need curator for my own work (2.4.1 & Guava 14.0 was what I'd been > > using), so don't think we can go back. > > > > HADOOP-11102 covers the problem -but doesn't propose a specific solution. > > But to me the one that seems most likely to work is: update Guava > > > > -steve > > > > -- > > CONFIDENTIALITY NOTICE > > NOTICE: This message is intended for the use of the individual or entity > to > > which it is addressed and may contain information that is confidential, > > privileged and exempt from disclosure under applicable law. If the reader > > of this message is not the intended recipient, you are hereby notified > that > > any printing, copying, dissemination, distribution, disclosure or > > forwarding of this communication is strictly prohibited. If you have > > received this communication in error, please contact the sender > immediately > > and delete it from your system. Thank You. > > >
