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| <div class="section" id="pyspark-sql-streaming-datastreamreader-orc"> |
| <h1>pyspark.sql.streaming.DataStreamReader.orc<a class="headerlink" href="#pyspark-sql-streaming-datastreamreader-orc" title="Permalink to this headline">¶</a></h1> |
| <dl class="py method"> |
| <dt id="pyspark.sql.streaming.DataStreamReader.orc"> |
| <code class="sig-prename descclassname">DataStreamReader.</code><code class="sig-name descname">orc</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">path</span><span class="p">:</span> <span class="n">str</span></em>, <em class="sig-param"><span class="n">mergeSchema</span><span class="p">:</span> <span class="n">Optional<span class="p">[</span>bool<span class="p">]</span></span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">pathGlobFilter</span><span class="p">:</span> <span class="n">Union[bool, str, None]</span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">recursiveFileLookup</span><span class="p">:</span> <span class="n">Union[bool, str, None]</span> <span class="o">=</span> <span class="default_value">None</span></em><span class="sig-paren">)</span> → DataFrame<a class="reference internal" href="../../../_modules/pyspark/sql/streaming/readwriter.html#DataStreamReader.orc"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#pyspark.sql.streaming.DataStreamReader.orc" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Loads a ORC file stream, returning the result as a <code class="xref py py-class docutils literal notranslate"><span class="pre">DataFrame</span></code>.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 2.3.0.</span></p> |
| </div> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Other Parameters</dt> |
| <dd class="field-odd"><dl class="simple"> |
| <dt><strong>Extra options</strong></dt><dd><p>For the extra options, refer to |
| <a class="reference external" href="https://spark.apache.org/docs/latest/sql-data-sources-orc.html#data-source-option">Data Source Option</a> |
| in the version you use.</p> |
| </dd> |
| </dl> |
| </dd> |
| </dl> |
| <p class="rubric">Examples</p> |
| <p>Load a data stream from a temporary ORC file.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">tempfile</span> |
| <span class="gp">>>> </span><span class="kn">import</span> <span class="nn">time</span> |
| <span class="gp">>>> </span><span class="k">with</span> <span class="n">tempfile</span><span class="o">.</span><span class="n">TemporaryDirectory</span><span class="p">()</span> <span class="k">as</span> <span class="n">d</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="c1"># Write a temporary ORC file to read it.</span> |
| <span class="gp">... </span> <span class="n">spark</span><span class="o">.</span><span class="n">range</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span><span class="o">.</span><span class="n">write</span><span class="o">.</span><span class="n">mode</span><span class="p">(</span><span class="s2">"overwrite"</span><span class="p">)</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="s2">"orc"</span><span class="p">)</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="n">d</span><span class="p">)</span> |
| <span class="gp">...</span> |
| <span class="gp">... </span> <span class="c1"># Start a streaming query to read the ORC file.</span> |
| <span class="gp">... </span> <span class="n">q</span> <span class="o">=</span> <span class="n">spark</span><span class="o">.</span><span class="n">readStream</span><span class="o">.</span><span class="n">schema</span><span class="p">(</span><span class="s2">"id LONG"</span><span class="p">)</span><span class="o">.</span><span class="n">orc</span><span class="p">(</span><span class="n">d</span><span class="p">)</span><span class="o">.</span><span class="n">writeStream</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="s2">"console"</span><span class="p">)</span><span class="o">.</span><span class="n">start</span><span class="p">()</span> |
| <span class="gp">... </span> <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">... </span> <span class="n">q</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
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