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From James James <>
Subject Re: GPL-licensed kfs0.3 for building mahout
Date Wed, 30 Dec 2009 21:34:25 GMT
It seems that I got the wrong KFS. I guess the correct one used  in Mahout is

Which is licensed under Apache 2.0

Sorry for the confusion.



From: Ken Krugler <>
Sent: Wed, December 30, 2009 2:56:12 PM
Subject: Re: GPL-licensed kfs0.3 for building mahout

On Dec 30, 2009, at 11:46am, James James wrote:

> Hi,
> I examined all the jar files needed for building mahout-0.2 jar. There is one jar file
called kfs-0.3.jar which is GPL-licensed.

Really? From what I could find, it's under Apache  2.0:

Though it seems odd that the jar is in the org.apache.mahout.kosmofs groupId, vs. org.kosmix
(with artifactId of kosmosfs)

-- Ken
> I am not an expert on open source licenses, but my understanding is that GPL is viral.
Mahout itself is licensed under Apache License, but does its dependence on this GPL-licensed
jar file contaminate itself? This issue seems to also be relevant for Hadoop since Hadopp
seems to rely on this kfs-0.3.jar too.
> Is there any way to build mahout-0.2 without relying on kfs-0.3.jar?
> Thanks so very much.

Ken Krugler
+1 530-210-6378
e l a s t i c  w e b  m i n i n g

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