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From Konstantin Boudnik <...@yahoo-inc.com>
Subject Re: [DISCUSSION]: Integrating SureLogic into Hadoop
Date Mon, 10 May 2010 23:37:16 GMT
This is very valid concern Todd. I am talking with SureLogic at the moment to
find out if they will be willing to provide the license to all Hadoop
contributors. 

On the other hand not including such type of validation into standard patch
validation process poses a danger of code degradation as time passes. E.g. we
can add SureLogic validation into secondary build but then Hadoop committers
will have to make sure that no new SureLogic's warnings were added in the
last week or so and fix them immediately or at least open a JIRA to track such
issues. Certainly there some other ways.

I believe we might need to make an effort here to help SureLogic to limit the
distribution of the license by Hadoop contributors crowd. I am not sure if this is
Ok to ask contributors to fill some kind of legal form where they agree not to
use the copy of the license for any projects not hosted by ASF or something?
Similar to what we fill for our the contributions to ASF? But first let's hear
SureLogic take on the license ;)

Cos

On Fri, May 07, 2010 at 04:35PM, Todd Lipcon wrote:
> Hi Cos,
> 
> This looks great, and I'm excited to have more ways of finding these tricky
> bugs. Are there any examples of bugs found already by these techniques?
> 
> The one concern I have about the proposal is with this:
> > SureLogic analysis is going to be included to the test-patch process. This
> said new patches are required not to raise SureLogic warnings level (similar
> to the requirements about FindBugs or javac).
> 
> This is slightly worrisome since the SureLogic license is only available to
> committers. For non-committers, I think this may prove to be difficult since
> they won't have any local means of checking for warnings and verifying that
> they've fixed them.
> 
> Thanks
> -Todd
> 
> 
> 2010/5/5 Konstantin Boudnik <cos@yahoo-inc.com>
> 
> > Hello.
> >
> > As some of you might know we have the license for great concurrency
> > analysis
> > software from SureLogic.
> >
> > SureLogic engineers gave some run for HDFS, MR, and Zookeeper code at the
> > end
> > of last year. The tools seem very promising and supposedly bring us the
> > value (linked from the page below).
> >
> > Please read this Wiki page to get more information about the tool and to
> > get some understanding how it works
> >  http://wiki.apache.org/hadoop/HowToUseConcurrencyAnalysisTools
> >
> > Here's the additional information on how to install/upgrade to the latest
> > release: http://surelogic.com/static/eclipse/install.html
> >
> > There's also a couple of JIRAs w/ patches (HDFS-801, MAPREDUCE-1259) to
> > integrate annotations into our current source code base. The annotations
> > are
> > represented as a jar file with some interface classes. They are
> > redistributed
> > under Apache license. The retention policy of annotations are 'compile
> > time',
> > i.e. this jar isn't required for the runtime of Hadoop.
> >
> > It'd be great to hear community thoughts on this so we can make some
> > decision
> > about this toolset.
> >
> > Please comment. Thanks
> >  Cos
> >
> 
> 
> 
> -- 
> Todd Lipcon
> Software Engineer, Cloudera

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