+1
On Thu, Jul 20, 2017 at 2:14 PM, Wes McKinney <wesmck...@gmail.com> wrote: > Dear all, > > The Plasma Object Store provides a server process, reference C++ client, and > Python binding for managing a collection of binary "objects" in POSIX shared > memory. Applications use a lightweight messaging protocol to create and delete > memory blocks in the object store, evict objects to make room for new objects, > and increment and decrement reference counts to indicate shared ownership of > memory. It also provides for subscribing to notifications about object > activity. The system helps simplify ownership transfer and memory lifetime of > shared memory blocks, which can be much more complicated in a peer-to-peer > architecture. > > The object store has been used in conjunction with the Apache Arrow libraries > to provide for zero-copy access to collections of large objects stored in > shared memory. Incorporating this project into Apache Arrow will help the > community continue to develop and innovate technology for low-overhead sharing > of complex datasets across multiple processes. > > Plasma Object Store was developed by the Ray project with the UC Berkeley > RISELab. There have been 8 contributors, with about 3.1 KLOC of C++ code and > an > additional 5.1 KLOC of thirdparty C and C++ code which we have reviewed for > compatibility with the Apache Software Foundation's policies on license > compatibility. > > This code was split off from the Ray project from commit id > `b94b4a35e04d8d2c0af4420518a4e9a94c1c9b9f` [1] and modified by the authors for > inclusion in Apache Arrow in a GitHub pull request [2]. This code has been > staged in a separate repository for review by the community and ASF IP > Clearance: > > - > https://github.com/ray-project/arrow-plasma-object-store/tree/11795753b0850cf5ad50d640067a8517ad8629a2#diff-69e56fcedf1b794992b790684902dcd4 > > This vote is to determine whether the Arrow PMC is in favor of accepting the > code contribution. If the vote passes, the PMC and the authors of the code > will > work together to complete the ASF IP Clearance process and import the Plasma > Object Store into Apache Arrow for inclusion in a future release: > > [ ] +1 : Accept contribution of Plasma Object Store > [ ] 0 : No opinion > [ ] -1 : Reject contribution because... > > The vote is open for 72 hours and will close at 18:15 UTC on Sunday 23 July > 2017 and the results will be announced on this list. > > Thanks, > Wes > > [1]: > https://github.com/ray-project/ray/commit/b94b4a35e04d8d2c0af4420518a4e9a94c1c9b9f > [2]: https://github.com/apache/arrow/pull/742
