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| <div class="section" id="implementation-status"> |
| <h1>Implementation Status<a class="headerlink" href="#implementation-status" title="Permalink to this headline">¶</a></h1> |
| <p>The following tables summarize the features available in the various official |
| Arrow libraries. Unless otherwise stated, the Python, R, Ruby and C/GLib |
| libraries follow the C++ Arrow library.</p> |
| <div class="section" id="data-types"> |
| <h2>Data Types<a class="headerlink" href="#data-types" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 29%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 18%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Data type |
| (primitive)</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Null</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Boolean</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Int8/16/32/64</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>UInt8/16/32/64</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Float16</p></td> |
| <td></td> |
| <td></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Float32/64</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Decimal128</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Date32/64</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Time32/64</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Timestamp</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Duration</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Interval</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Fixed Size Binary</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Binary</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Large Binary</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Utf8</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Large Utf8</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 29%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 18%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Data type |
| (nested)</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Fixed Size List</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>List</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Large List</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Struct</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Map</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Dense Union</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Sparse Union</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 29%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 18%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Data type |
| (special)</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Dictionary</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓ (1)</p></td> |
| <td></td> |
| <td><p>✓ (1)</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Extension</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Notes:</p> |
| <ul class="simple"> |
| <li><p>(1) Nested dictionaries not supported</p></li> |
| </ul> |
| <div class="admonition seealso"> |
| <p class="admonition-title">See also</p> |
| <p>The <a class="reference internal" href="format/Columnar.html#format-columnar"><span class="std std-ref">Arrow Columnar Format</span></a> specification.</p> |
| </div> |
| </div> |
| <div class="section" id="ipc-format"> |
| <h2>IPC Format<a class="headerlink" href="#ipc-format" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 38%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| <col style="width: 16%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>IPC Feature</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Arrow stream format</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Arrow file format</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Record batches</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Dictionaries</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Replacement dictionaries</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Delta dictionaries</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Tensors</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Sparse tensors</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Custom schema metadata</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="flight-rpc"> |
| <h2>Flight RPC<a class="headerlink" href="#flight-rpc" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 38%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| <col style="width: 16%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Flight RPC Feature</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>gRPC transport</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>gRPC + TLS transport</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>RPC error codes</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Authentication handlers</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Custom client middleware</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Custom server middleware</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <div class="admonition seealso"> |
| <p class="admonition-title">See also</p> |
| <p>The <a class="reference internal" href="format/Flight.html#flight-rpc"><span class="std std-ref">Arrow Flight RPC</span></a> specification.</p> |
| </div> |
| </div> |
| <div class="section" id="c-data-interface"> |
| <h2>C Data Interface<a class="headerlink" href="#c-data-interface" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 57%" /> |
| <col style="width: 14%" /> |
| <col style="width: 16%" /> |
| <col style="width: 14%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Feature</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Python</p></th> |
| <th class="head"><p>R</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Schema export</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>Array export</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| </tr> |
| <tr class="row-even"><td><p>Schema import</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>Array import</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| <td><p>✓</p></td> |
| </tr> |
| </tbody> |
| </table> |
| <div class="admonition seealso"> |
| <p class="admonition-title">See also</p> |
| <p>The <a class="reference internal" href="format/CDataInterface.html#c-data-interface"><span class="std std-ref">C Data Interface</span></a> specification.</p> |
| </div> |
| </div> |
| <div class="section" id="third-party-data-formats"> |
| <h2>Third-Party Data Formats<a class="headerlink" href="#third-party-data-formats" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 36%" /> |
| <col style="width: 11%" /> |
| <col style="width: 11%" /> |
| <col style="width: 9%" /> |
| <col style="width: 15%" /> |
| <col style="width: 9%" /> |
| <col style="width: 9%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Format</p></th> |
| <th class="head"><p>C++</p></th> |
| <th class="head"><p>Java</p></th> |
| <th class="head"><p>Go</p></th> |
| <th class="head"><p>JavaScript</p></th> |
| <th class="head"><p>C#</p></th> |
| <th class="head"><p>Rust</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>Avro</p></td> |
| <td></td> |
| <td><p>R</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>CSV</p></td> |
| <td><p>R</p></td> |
| <td></td> |
| <td><p>R/W</p></td> |
| <td></td> |
| <td></td> |
| <td><p>R/W</p></td> |
| </tr> |
| <tr class="row-even"><td><p>ORC</p></td> |
| <td><p>R</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Parquet</p></td> |
| <td><p>R/W</p></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Notes:</p> |
| <ul class="simple"> |
| <li><p><em>R</em> = Read supported</p></li> |
| <li><p><em>W</em> = Write supported</p></li> |
| </ul> |
| </div> |
| </div> |
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