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| <div class="section" id="pyarrow-plasma-plasmaclient"> |
| <h1>pyarrow.plasma.PlasmaClient<a class="headerlink" href="#pyarrow-plasma-plasmaclient" title="Permalink to this headline">¶</a></h1> |
| <dl class="py class"> |
| <dt id="pyarrow.plasma.PlasmaClient"> |
| <em class="property">class </em><code class="sig-prename descclassname">pyarrow.plasma.</code><code class="sig-name descname">PlasmaClient</code><a class="headerlink" href="#pyarrow.plasma.PlasmaClient" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">pyarrow.lib._Weakrefable</span></code></p> |
| <p>The PlasmaClient is used to interface with a plasma store and manager.</p> |
| <p>The PlasmaClient can ask the PlasmaStore to allocate a new buffer, seal a |
| buffer, and get a buffer. Buffers are referred to by object IDs, which are |
| strings.</p> |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.__init__"> |
| <code class="sig-name descname">__init__</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.__init__" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Initialize self. See help(type(self)) for accurate signature.</p> |
| </dd></dl> |
| |
| <p class="rubric">Methods</p> |
| <table class="longtable docutils align-default"> |
| <colgroup> |
| <col style="width: 10%" /> |
| <col style="width: 90%" /> |
| </colgroup> |
| <tbody> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.__init__" title="pyarrow.plasma.PlasmaClient.__init__"><code class="xref py py-obj docutils literal notranslate"><span class="pre">__init__</span></code></a>()</p></td> |
| <td><p>Initialize self.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.contains" title="pyarrow.plasma.PlasmaClient.contains"><code class="xref py py-obj docutils literal notranslate"><span class="pre">contains</span></code></a>(self, ObjectID object_id)</p></td> |
| <td><p>Check if the object is present and sealed in the PlasmaStore.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.create" title="pyarrow.plasma.PlasmaClient.create"><code class="xref py py-obj docutils literal notranslate"><span class="pre">create</span></code></a>(self, ObjectID object_id, …)</p></td> |
| <td><p>Create a new buffer in the PlasmaStore for a particular object ID.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.create_and_seal" title="pyarrow.plasma.PlasmaClient.create_and_seal"><code class="xref py py-obj docutils literal notranslate"><span class="pre">create_and_seal</span></code></a>(self, ObjectID object_id, …)</p></td> |
| <td><p>Store a new object in the PlasmaStore for a particular object ID.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.debug_string" title="pyarrow.plasma.PlasmaClient.debug_string"><code class="xref py py-obj docutils literal notranslate"><span class="pre">debug_string</span></code></a>(self)</p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.decode_notifications" title="pyarrow.plasma.PlasmaClient.decode_notifications"><code class="xref py py-obj docutils literal notranslate"><span class="pre">decode_notifications</span></code></a>(self, const uint8_t *buf)</p></td> |
| <td><p>Get the notification from the buffer.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.delete" title="pyarrow.plasma.PlasmaClient.delete"><code class="xref py py-obj docutils literal notranslate"><span class="pre">delete</span></code></a>(self, object_ids)</p></td> |
| <td><p>Delete the objects with the given IDs from other object store.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.disconnect" title="pyarrow.plasma.PlasmaClient.disconnect"><code class="xref py py-obj docutils literal notranslate"><span class="pre">disconnect</span></code></a>(self)</p></td> |
| <td><p>Disconnect this client from the Plasma store.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.evict" title="pyarrow.plasma.PlasmaClient.evict"><code class="xref py py-obj docutils literal notranslate"><span class="pre">evict</span></code></a>(self, int64_t num_bytes)</p></td> |
| <td><p>Evict some objects until to recover some bytes.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.get" title="pyarrow.plasma.PlasmaClient.get"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get</span></code></a>(self, object_ids, int timeout_ms=-1[, …])</p></td> |
| <td><p>Get one or more Python values from the object store.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.get_buffers" title="pyarrow.plasma.PlasmaClient.get_buffers"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_buffers</span></code></a>(self, object_ids[, timeout_ms, …])</p></td> |
| <td><p>Returns data buffer from the PlasmaStore based on object ID.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.get_metadata" title="pyarrow.plasma.PlasmaClient.get_metadata"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_metadata</span></code></a>(self, object_ids[, timeout_ms])</p></td> |
| <td><p>Returns metadata buffer from the PlasmaStore based on object ID.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.get_next_notification" title="pyarrow.plasma.PlasmaClient.get_next_notification"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_next_notification</span></code></a>(self)</p></td> |
| <td><p>Get the next notification from the notification socket.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.get_notification_socket" title="pyarrow.plasma.PlasmaClient.get_notification_socket"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_notification_socket</span></code></a>(self)</p></td> |
| <td><p>Get the notification socket.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.hash" title="pyarrow.plasma.PlasmaClient.hash"><code class="xref py py-obj docutils literal notranslate"><span class="pre">hash</span></code></a>(self, ObjectID object_id)</p></td> |
| <td><p>Compute the checksum of an object in the object store.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.list" title="pyarrow.plasma.PlasmaClient.list"><code class="xref py py-obj docutils literal notranslate"><span class="pre">list</span></code></a>(self)</p></td> |
| <td><p>Experimental: List the objects in the store.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.put" title="pyarrow.plasma.PlasmaClient.put"><code class="xref py py-obj docutils literal notranslate"><span class="pre">put</span></code></a>(self, value, ObjectID object_id=None, …)</p></td> |
| <td><p>Store a Python value into the object store.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.put_raw_buffer" title="pyarrow.plasma.PlasmaClient.put_raw_buffer"><code class="xref py py-obj docutils literal notranslate"><span class="pre">put_raw_buffer</span></code></a>(self, value, …)</p></td> |
| <td><p>Store Python buffer into the object store.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.seal" title="pyarrow.plasma.PlasmaClient.seal"><code class="xref py py-obj docutils literal notranslate"><span class="pre">seal</span></code></a>(self, ObjectID object_id)</p></td> |
| <td><p>Seal the buffer in the PlasmaStore for a particular object ID.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.set_client_options" title="pyarrow.plasma.PlasmaClient.set_client_options"><code class="xref py py-obj docutils literal notranslate"><span class="pre">set_client_options</span></code></a>(self, client_name, …)</p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.store_capacity" title="pyarrow.plasma.PlasmaClient.store_capacity"><code class="xref py py-obj docutils literal notranslate"><span class="pre">store_capacity</span></code></a>(self)</p></td> |
| <td><p>Get the memory capacity of the store.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.subscribe" title="pyarrow.plasma.PlasmaClient.subscribe"><code class="xref py py-obj docutils literal notranslate"><span class="pre">subscribe</span></code></a>(self)</p></td> |
| <td><p>Subscribe to notifications about sealed objects.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.to_capsule" title="pyarrow.plasma.PlasmaClient.to_capsule"><code class="xref py py-obj docutils literal notranslate"><span class="pre">to_capsule</span></code></a>(self)</p></td> |
| <td><p></p></td> |
| </tr> |
| </tbody> |
| </table> |
| <p class="rubric">Attributes</p> |
| <table class="longtable docutils align-default"> |
| <colgroup> |
| <col style="width: 10%" /> |
| <col style="width: 90%" /> |
| </colgroup> |
| <tbody> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.plasma.PlasmaClient.store_socket_name" title="pyarrow.plasma.PlasmaClient.store_socket_name"><code class="xref py py-obj docutils literal notranslate"><span class="pre">store_socket_name</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| </tbody> |
| </table> |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.contains"> |
| <code class="sig-name descname">contains</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">ObjectID object_id</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.contains" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Check if the object is present and sealed in the PlasmaStore.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – A string used to identify an object.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.create"> |
| <code class="sig-name descname">create</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">ObjectID object_id</em>, <em class="sig-param">int64_t data_size</em>, <em class="sig-param">string metadata=b''</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.create" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Create a new buffer in the PlasmaStore for a particular object ID.</p> |
| <p>The returned buffer is mutable until seal is called.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – The object ID used to identify an object.</p></li> |
| <li><p><strong>size</strong> (<em>int</em>) – The size in bytes of the created buffer.</p></li> |
| <li><p><strong>metadata</strong> (<em>bytes</em>) – An optional string of bytes encoding whatever metadata the user |
| wishes to encode.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Raises</dt> |
| <dd class="field-even"><ul class="simple"> |
| <li><p><strong>PlasmaObjectExists</strong> – This exception is raised if the object could not be created because |
| there already is an object with the same ID in the plasma store.</p></li> |
| <li><p><strong>PlasmaStoreFull</strong> – This exception is raised if the object could: not be created because the plasma store is unable to evict |
| enough objects to create room for it.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.create_and_seal"> |
| <code class="sig-name descname">create_and_seal</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">ObjectID object_id</em>, <em class="sig-param">string data</em>, <em class="sig-param">string metadata=b''</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.create_and_seal" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Store a new object in the PlasmaStore for a particular object ID.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – The object ID used to identify an object.</p></li> |
| <li><p><strong>data</strong> (<em>bytes</em>) – The object to store.</p></li> |
| <li><p><strong>metadata</strong> (<em>bytes</em>) – An optional string of bytes encoding whatever metadata the user |
| wishes to encode.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Raises</dt> |
| <dd class="field-even"><ul class="simple"> |
| <li><p><strong>PlasmaObjectExists</strong> – This exception is raised if the object could not be created because |
| there already is an object with the same ID in the plasma store.</p></li> |
| <li><p><strong>PlasmaStoreFull</strong> – This exception is raised if the object could: not be created because the plasma store is unable to evict |
| enough objects to create room for it.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.debug_string"> |
| <code class="sig-name descname">debug_string</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.debug_string" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.decode_notifications"> |
| <code class="sig-name descname">decode_notifications</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">const uint8_t *buf</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.decode_notifications" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the notification from the buffer.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><ul class="simple"> |
| <li><p><em>[ObjectID]</em> – The list of object IDs in the notification message.</p></li> |
| <li><p><em>c_vector[int64_t]</em> – The data sizes of the objects in the notification message.</p></li> |
| <li><p><em>c_vector[int64_t]</em> – The metadata sizes of the objects in the notification message.</p></li> |
| </ul> |
| </p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.delete"> |
| <code class="sig-name descname">delete</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">object_ids</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.delete" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Delete the objects with the given IDs from other object store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>object_ids</strong> (<em>list</em>) – A list of strings used to identify the objects.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.disconnect"> |
| <code class="sig-name descname">disconnect</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.disconnect" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Disconnect this client from the Plasma store.</p> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.evict"> |
| <code class="sig-name descname">evict</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">int64_t num_bytes</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.evict" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Evict some objects until to recover some bytes.</p> |
| <p>Recover at least num_bytes bytes if possible.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>num_bytes</strong> (<em>int</em>) – The number of bytes to attempt to recover.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.get"> |
| <code class="sig-name descname">get</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">object_ids</em>, <em class="sig-param">int timeout_ms=-1</em>, <em class="sig-param">serialization_context=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.get" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get one or more Python values from the object store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>object_ids</strong> (<em>list</em><em> or </em><a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – Object ID or list of object IDs associated to the values we get |
| from the store.</p></li> |
| <li><p><strong>timeout_ms</strong> (<em>int</em><em>, </em><em>default -1</em>) – The number of milliseconds that the get call should block before |
| timing out and returning. Pass -1 if the call should block and 0 |
| if the call should return immediately.</p></li> |
| <li><p><strong>serialization_context</strong> (<a class="reference internal" href="pyarrow.SerializationContext.html#pyarrow.SerializationContext" title="pyarrow.SerializationContext"><em>pyarrow.SerializationContext</em></a><em>, </em><em>default None</em>) – Custom serialization and deserialization context.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>list or object</em> – Python value or list of Python values for the data associated with |
| the object_ids and ObjectNotAvailable if the object was not |
| available.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.get_buffers"> |
| <code class="sig-name descname">get_buffers</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">object_ids</span></em>, <em class="sig-param"><span class="n">timeout_ms</span><span class="o">=</span><span class="default_value">- 1</span></em>, <em class="sig-param"><span class="n">with_meta</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.get_buffers" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Returns data buffer from the PlasmaStore based on object ID.</p> |
| <p>If the object has not been sealed yet, this call will block. The |
| retrieved buffer is immutable.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>object_ids</strong> (<em>list</em>) – A list of ObjectIDs used to identify some objects.</p></li> |
| <li><p><strong>timeout_ms</strong> (<em>int</em>) – The number of milliseconds that the get call should block before |
| timing out and returning. Pass -1 if the call should block and 0 |
| if the call should return immediately.</p></li> |
| <li><p><strong>with_meta</strong> (<em>bool</em>) – </p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>list</em> – If with_meta=False, this is a list of PlasmaBuffers for the data |
| associated with the object_ids and None if the object was not |
| available. If with_meta=True, this is a list of tuples of |
| PlasmaBuffer and metadata bytes.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.get_metadata"> |
| <code class="sig-name descname">get_metadata</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">object_ids</span></em>, <em class="sig-param"><span class="n">timeout_ms</span><span class="o">=</span><span class="default_value">- 1</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.get_metadata" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Returns metadata buffer from the PlasmaStore based on object ID.</p> |
| <p>If the object has not been sealed yet, this call will block. The |
| retrieved buffer is immutable.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>object_ids</strong> (<em>list</em>) – A list of ObjectIDs used to identify some objects.</p></li> |
| <li><p><strong>timeout_ms</strong> (<em>int</em>) – The number of milliseconds that the get call should block before |
| timing out and returning. Pass -1 if the call should block and 0 |
| if the call should return immediately.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>list</em> – List of PlasmaBuffers for the metadata associated with the |
| object_ids and None if the object was not available.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.get_next_notification"> |
| <code class="sig-name descname">get_next_notification</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.get_next_notification" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the next notification from the notification socket.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><ul class="simple"> |
| <li><p><em>ObjectID</em> – The object ID of the object that was stored.</p></li> |
| <li><p><em>int</em> – The data size of the object that was stored.</p></li> |
| <li><p><em>int</em> – The metadata size of the object that was stored.</p></li> |
| </ul> |
| </p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.get_notification_socket"> |
| <code class="sig-name descname">get_notification_socket</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.get_notification_socket" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the notification socket.</p> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.hash"> |
| <code class="sig-name descname">hash</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">ObjectID object_id</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.hash" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Compute the checksum of an object in the object store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – A string used to identify an object.</p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>bytes</em> – A digest string object’s hash. If the object isn’t in the object |
| store, the string will have length zero.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.list"> |
| <code class="sig-name descname">list</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.list" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Experimental: List the objects in the store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><p><em>dict</em> – Dictionary from ObjectIDs to an “info” dictionary describing the |
| object. The “info” dictionary has the following entries:</p> |
| <dl class="simple"> |
| <dt>data_size</dt><dd><p>size of the object in bytes</p> |
| </dd> |
| <dt>metadata_size</dt><dd><p>size of the object metadata in bytes</p> |
| </dd> |
| <dt>ref_count</dt><dd><p>Number of clients referencing the object buffer</p> |
| </dd> |
| <dt>create_time</dt><dd><p>Unix timestamp of the creation of the object</p> |
| </dd> |
| <dt>construct_duration</dt><dd><p>Time the creation of the object took in seconds</p> |
| </dd> |
| <dt>state</dt><dd><p>”created” if the object is still being created and |
| “sealed” if it is already sealed</p> |
| </dd> |
| </dl> |
| </p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.put"> |
| <code class="sig-name descname">put</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">value</em>, <em class="sig-param">ObjectID object_id=None</em>, <em class="sig-param">int memcopy_threads=6</em>, <em class="sig-param">serialization_context=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.put" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Store a Python value into the object store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>value</strong> (<em>object</em>) – A Python object to store.</p></li> |
| <li><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a><em>, </em><em>default None</em>) – If this is provided, the specified object ID will be used to refer |
| to the object.</p></li> |
| <li><p><strong>memcopy_threads</strong> (<em>int</em><em>, </em><em>default 6</em>) – The number of threads to use to write the serialized object into |
| the object store for large objects.</p></li> |
| <li><p><strong>serialization_context</strong> (<a class="reference internal" href="pyarrow.SerializationContext.html#pyarrow.SerializationContext" title="pyarrow.SerializationContext"><em>pyarrow.SerializationContext</em></a><em>, </em><em>default None</em>) – Custom serialization and deserialization context.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>The object ID associated to the Python object.</em></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.put_raw_buffer"> |
| <code class="sig-name descname">put_raw_buffer</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">value</em>, <em class="sig-param">ObjectID object_id=None</em>, <em class="sig-param">string metadata=b''</em>, <em class="sig-param">int memcopy_threads=6</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.put_raw_buffer" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Store Python buffer into the object store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>value</strong> (<em>Python object that implements the buffer protocol</em>) – A Python buffer object to store.</p></li> |
| <li><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a><em>, </em><em>default None</em>) – If this is provided, the specified object ID will be used to refer |
| to the object.</p></li> |
| <li><p><strong>metadata</strong> (<em>bytes</em>) – An optional string of bytes encoding whatever metadata the user |
| wishes to encode.</p></li> |
| <li><p><strong>memcopy_threads</strong> (<em>int</em><em>, </em><em>default 6</em>) – The number of threads to use to write the serialized object into |
| the object store for large objects.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><em>The object ID associated to the Python buffer object.</em></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.seal"> |
| <code class="sig-name descname">seal</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">ObjectID object_id</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.seal" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Seal the buffer in the PlasmaStore for a particular object ID.</p> |
| <p>Once a buffer has been sealed, the buffer is immutable and can only be |
| accessed through get.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>object_id</strong> (<a class="reference internal" href="pyarrow.plasma.ObjectID.html#pyarrow.plasma.ObjectID" title="pyarrow.plasma.ObjectID"><em>ObjectID</em></a>) – A string used to identify an object.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.set_client_options"> |
| <code class="sig-name descname">set_client_options</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">client_name</em>, <em class="sig-param">int64_t limit_output_memory</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.set_client_options" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.store_capacity"> |
| <code class="sig-name descname">store_capacity</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.store_capacity" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the memory capacity of the store.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><em>int</em> – The memory capacity of the store in bytes.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py attribute"> |
| <dt id="pyarrow.plasma.PlasmaClient.store_socket_name"> |
| <code class="sig-name descname">store_socket_name</code><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.store_socket_name" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.plasma.PlasmaClient.subscribe"> |
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| <dt id="pyarrow.plasma.PlasmaClient.to_capsule"> |
| <code class="sig-name descname">to_capsule</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.plasma.PlasmaClient.to_capsule" title="Permalink to this definition">¶</a></dt> |
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