Stas Oskin wrote:
Hi.
Intresting - aren't they supposed to contribute back, as Hadoop is open
source?
Regards.
2009/10/3 Otis Gospodnetic <otis_gospodne...@yahoo.com>
Related (but not helping the immediate question). China Telecom developed
something they call HyperDFS. They modified Hadoop and made it possible to
run a cluster of NNs, thus eliminating the SPOF.
I don't have the details - the presenter at Hadoop World (last round of
sessions, 2nd floor) mentioned that. Didn't give a clear answer when asked
about contributing it back.
Otis
1. Apache license says no need to contribute back
2. Even LGPL and GPL say no need to contribute back if you dont
distribute the code
so no, they dont.
By not distributing their patches, they say "we agree to take on all
maintenance and testing costs forever"
Their choice.
