Hello, Denis. > Nickolay, as for that fork which is in GG codebase - GridGain is a major > contributor and maintainer but the others are welcomed to send > pull-requests.
Can we make this fork maintained by Ignite Community? With all respect to Grid Gain as an author of Apache Ignite I don't like when some huge dependencies (incompatible with community-driven analogue) belongs to the enterprise. This leads us to the situation when Grid Gain will decide which features will be added to the SQL engine and which not. В Пн, 08/07/2019 в 13:51 -0700, Denis Magda пишет: > Dmitry, > > To make this fully-vendor neutral even at the originating repository level, > we can create and work with the H2 fork as a separate Github repo (separate > project governed and maintained by Ignite community). That repo can't be > part of Ignite due to license mismatch. Thus, during release times, we need > to assemble a binary (maven artifact) from that fork. > > However, it's not clear to me how to use those sources during the dev time? > It sounds like Ignite can use only the binary (Maven) artifact that has to > be updated/regenerated if there are any changes. *SQL experts*, could you > please step in? > > Nickolay, as for that fork which is in GG codebase - GridGain is a major > contributor and maintainer but the others are welcomed to send > pull-requests. > > - > Denis > > > On Thu, Jul 4, 2019 at 9:26 AM Dmitriy Pavlov <dpav...@apache.org> wrote: > > > Hi Denis, > > > > As you know, some time ago I've started a discussion about removing > > dependence from gridgain:shmem. Ignite community seems to be not so much > > interested in this removal, for now. So once added it could stay here > > forever. Reverse dependency direction seems to be more natural. It is like > > the open-core model. > > > > I feel more comfortable if all Ignite dependencies are released as part of > > the Ignite code base, or some open governed project with a license from > > Category A https://www.apache.org/legal/resolved.html. > > > > It is true that H2 has Category B license, so derivative can't be committed > > into ASF repository. > > > > What if we consult with le...@apache.org to find additional ways to donate > > forked version into ASF codebase? We anyway need their approval because > > gridgain/h2 has a non-standard license, so we should approve including > > non-standard licensed component it the product. > > > > Sincerely, > > Dmitriy Pavlov > > > > чт, 4 июл. 2019 г. в 18:57, Denis Magda <dma...@apache.org>: > > > > > Hi Igniters, > > > > > > As you know, Ignite SQL engine is tightly coupled with the H2 database > > > > that > > > provides basic parsing and query execution capabilities. This synergy > > > > has > > > worked well for a while until Ignite SQL engine got a much broader > > > > adoption > > > for all sort of use cases. > > > > > > Presently, there is a list of impactful issues and limitations related to > > > memory management, distributed engine optimization, and queries planning > > > that require changes in H2. We've tried to contribute to H2 directly with > > > no significant luck - what's needed for our distributed engine is of no > > > interest to H2 community. At the same time, we can't leave the things as > > > is, as long as these limitations keep Ignite SQL engine from gradual > > > evolution. > > > > > > As a solution, we created an H2 fork [1] and did all of the required > > > changes there. We would be happy to include the fork into Ignite source > > > base, but H2's license (available under dual MPL 2.0 and EPL 1.0) is not > > > compliant with Apache 2.0. However, if Ignite starts using our maven > > > artifacts instead of the standard H2's ones, then the licensing issue is > > > solved. > > > > > > Is the community ready to accept this solution and swap the standard H2 > > > artifact with the one prepared by GridGain? Presently, all of those > > > improvements are available to GridGain customers, but GridGain wants to > > > make all of them be available for Ignite community. And that's the only > > > legal way we've come up with... > > > > > > > > > [1] https://github.com/gridgain/gridgain/tree/master/modules/h2 > > > > > > > > > > > > -- > > > - > > > Denis > > >
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