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From Suneel Marthi <suneel.mar...@gmail.com>
Subject Re: build error
Date Fri, 27 Mar 2015 16:57:35 GMT
Agree with Stevo. there's another round of code cleanup we need to go thru
to eliminate guava collection calls and replace with straight Java 7 calls.
We agreed as part of the last hangout that Java 7 would be the minimal Java
that we support going forward.

On Fri, Mar 27, 2015 at 12:51 PM, Stevo Slavić <sslavic@gmail.com> wrote:

> Question is what is minimal Java that we should require Mahout users to
> use. It was raised to 1.7 via MAHOUT-1652
> <https://issues.apache.org/jira/browse/MAHOUT-1652>. It enables us to use
> Java 1.7 APIs, finally. E.g. after level was raised I was recently able to
> eliminate some usage of Guava for closing Closable's with using
> try-with-resources Java 7 construct. We should minimize dependencies, there
> are IMO too many. Depending more and more on standard libraries of Java and
> Scala helps in that direction. Hopefully we do not wait much longer before
> the level is raised even further to 1.8, so we have even less 3rd party
> dependencies.
>
> On Fri, Mar 27, 2015 at 5:31 PM, Pat Ferrel <pat@occamsmachete.com> wrote:
>
> > It should, Hadoop supports it long term and lots of people stuck there
> > with projects that haven’t been upgraded (Mahout comes to mind).
> >
> > On Mar 27, 2015, at 9:26 AM, Stevo Slavić <sslavic@gmail.com> wrote:
> >
> > Have to check but I doubt that build supports hadoop 1.x any more.
> >
> > On Fri, Mar 27, 2015 at 5:15 PM, Suneel Marthi <suneel.marthi@gmail.com>
> > wrote:
> >
> > > This is the Java version, gotta use Java 7
> > >
> > > On Fri, Mar 27, 2015 at 12:08 PM, Pat Ferrel <pat@occamsmachete.com>
> > > wrote:
> > >
> > >> Latest source for Spark 1.1.0 and Hadoop 1.2.1
> > >>
> > >> Build complains about the move to
> > >> <maven.compiler.target>1.7</maven.compiler.target> I think
this was
> > upped
> > >> from 1.6 but not sure if that’s what the error is about.
> > >>
> > >> I’m on Java 6 no this machine if that matters.
> > >>
> > >> Actual error:
> > >>
> > >> [INFO] Mahout Build Tools ................................ SUCCESS
> > > [3.512s]
> > >> [INFO] Apache Mahout ..................................... SUCCESS
> > > [0.603s]
> > >> [INFO] Mahout Math ....................................... FAILURE
> > > [6.453s]
> > >> [INFO] Mahout MapReduce Legacy ........................... SKIPPED
> > >> [INFO] Mahout Integration ................................ SKIPPED
> > >> [INFO] Mahout Examples ................................... SKIPPED
> > >> [INFO] Mahout Release Package ............................ SKIPPED
> > >> [INFO] Mahout Math Scala bindings ........................ SKIPPED
> > >> [INFO] Mahout Spark bindings ............................. SKIPPED
> > >> [INFO] Mahout Spark bindings shell ....................... SKIPPED
> > >> [INFO] Mahout H2O backend ................................ SKIPPED
> > >> [INFO]
> > >>
> ------------------------------------------------------------------------
> > >> [INFO] BUILD FAILURE
> > >> [INFO]
> > >>
> ------------------------------------------------------------------------
> > >> [INFO] Total time: 11.609s
> > >> [INFO] Finished at: Fri Mar 27 08:55:35 PDT 2015
> > >> [INFO] Final Memory: 24M/310M
> > >> [INFO]
> > >>
> ------------------------------------------------------------------------
> > >> [ERROR] Failed to execute goal
> > >> org.apache.maven.plugins:maven-compiler-plugin:3.2:compile
> > >> (default-compile) on project mahout-math: Fatal error compiling:
> invalid
> > >> target release: 1.7 -> [Help 1]
> > >> [ERROR]
> > >> [ERROR] To see the full stack trace of the errors, re-run Maven with
> the
> > >> -e switch.
> > >> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> > >> [ERROR]
> > >>
> > >>
> > >
> >
> >
>

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