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<h2 id='Arrow+Plasma+Object+Store+Intellectual+Property+%28IP%29+Clearance+Status'><img src="../images/redarrow.gif" />Arrow Plasma Object Store Intellectual Property (IP) Clearance Status</h2>
<div class="section-content">
</div>
<h2 id='Description'><img src="../images/redarrow.gif" />Description</h2>
<div class="section-content">
<p>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.</p>
<p>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.</p>
</div>
<h2 id='Project+info'><img src="../images/redarrow.gif" />Project info</h2>
<div class="section-content">
<p>
The Apache Arrow PMC will be responsible for the code.
</p>
<p>
It will be integrated into the Apache Arrow project, into the C++ part of
the main Arrow source tree and build system.
</p>
<p>
The following people will be managing this contribution:
</p>
<ul>
<li>Jacques Nadeau (Apache Arrow PMC Chair)</li>
<li>Julian Hyde (Apache Arrow PMC Member)</li>
<li>Wes McKinney (Apache Arrow PMC Member)</li>
</ul>
<p>
<em>Completed tasks are shown by the completion date (YYYY-MM-dd).</em>
</p>
<h3 id='Identify+the+codebase'>Identify the codebase</h3>
<div class="section-content">
<table class="colortable" width="100%">
<tr>
<th>date</th>
<th>item</th>
</tr>
<tr>
<td>2017-07-27</td>
<td>Trademark and Google Search found no use of name as software product.</td>
</tr>
</table>
<ul>
<li>
Origin: <a href="https://github.com/ray-project/arrow-plasma-object-store">https://github.com/ray-project/arrow-plasma-object-store</a>
as at commit ID 11795753b0850cf5ad50d640067a8517ad8629a2.
</li>
<li>
Download link: <a href="https://github.com/ray-project/arrow-plasma-object-store/archive/11795753b0850cf5ad50d640067a8517ad8629a2.tar.gz">11795753b0850cf5ad50d640067a8517ad8629a2.tar.gz</a>
</li>
<li>SHA1: 242fad7ce3a592c82865c3fe44f951b91e491b4f</li>
<li>SHA256: 64353a8ce8051ec3a75804f82d1da5880fad5b43d7fffe830ed1343674c7a5f2</li>
</ul>
<h4 id='Copyright'>Copyright</h4>
<div class="section-content">
<table class="colortable" width="100%">
<tr>
<th>date</th>
<th>item</th>
</tr>
<!-- <tr> -->
<!-- <td>2017-07-27</td> -->
<!-- <td>Check and make sure that the papers that transfer rights to -->
<!-- the ASF been received. It is only necessary to transfer -->
<!-- rights for the package, the core code, and any new code -->
<!-- produced by the project.</td> -->
<!-- </tr> -->
<tr>
<td>2017-07-27</td>
<td>Check and make sure that the files that have been donated
have been updated to reflect the new ASF copyright.</td>
</tr>
</table>
<p>
Identify name recorded for software grant: arrow-plasma-object-store
</p>
</div>
<h4 id='Verify+distribution+rights'>Verify distribution rights</h4>
<div class="section-content">
<p>
Corporations and individuals holding existing distribution rights:
</p>
<ul>
<li>Philipp Moritz</li>
<li>Robert Nishihara</li>
<li>Richard Shin</li>
<li>Stephanie Wang</li>
<li>Alexey Tumanov</li>
<li>Ion Stoica</li>
<li>Ujval Misra</li>
<li>Mehrdad Niknami</li>
</ul>
<table class="colortable" width="100%">
<tr>
<th>date</th>
<th>item</th>
</tr>
<tr>
<td>2017-07-27</td>
<td>Check that all active committers have a signed CLA on
record.</td>
</tr>
<tr>
<td>2017-07-27</td>
<td>Remind active committers that they are responsible for
ensuring that a Corporate CLA is recorded if such is
required to authorize their contributions under their
individual CLA.</td>
</tr>
<tr>
<td>2017-07-27</td>
<td>Check and make sure that for all items included with the
distribution that is not under the Apache license, we have
the right to combine with Apache-licensed code and
redistribute.</td>
</tr>
<tr>
<td>2017-07-27</td>
<td>Check and make sure that all items depended upon by the
project is covered by one or more of the following approved
licenses: Apache, BSD, Artistic, MIT/X, MIT/W3C, MPL 1.1, or
something with essentially the same terms.</td>
</tr>
</table>
<p>Generally, the result of checking off these items will be a
Software Grant, CLA, and Corporate CLA for ASF licensed code,
which must have no dependencies upon items whose licenses that
are incompatible with the Apache License.</p>
</div>
</div>
<h3 id='Organizational+acceptance+of+responsibility+for+the+project'>Organizational acceptance of responsibility for the project
</h3>
<div class="section-content">
<p>
Related votes:
</p>
<ul>
<li>
<a href="https://s.apache.org/arrow-plasma-object-store-pmc-vote">
Vote on Apache Arrow dev list to determine whether the Arrow PMC is in favor of accepting the code contribution, passed on 2017-07-22
</a>
</li>
<li><a href="https://s.apache.org/arrow-plasma-object-store-clearance-vote">Vote thread on general@incubator started on 2017-08-02</a></li>
<li><a href="https://s.apache.org/arrow-plasma-object-store-clearance-result">Vote on general@incubator passed on 2017-08-07</a></li>
</ul>
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