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| <div class="section" id="module-apache_beam.io.hadoopfilesystem"> |
| <span id="apache-beam-io-hadoopfilesystem-module"></span><h1>apache_beam.io.hadoopfilesystem module<a class="headerlink" href="#module-apache_beam.io.hadoopfilesystem" title="Permalink to this headline">¶</a></h1> |
| <p><a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal notranslate"><span class="pre">FileSystem</span></code></a> implementation for accessing |
| Hadoop Distributed File System files.</p> |
| <dl class="class"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem"> |
| <em class="property">class </em><code class="descclassname">apache_beam.io.hadoopfilesystem.</code><code class="descname">HadoopFileSystem</code><span class="sig-paren">(</span><em>pipeline_options</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal notranslate"><span class="pre">apache_beam.io.filesystem.FileSystem</span></code></a></p> |
| <p><code class="docutils literal notranslate"><span class="pre">FileSystem</span></code> implementation that supports HDFS.</p> |
| <p>URL arguments to methods expect strings starting with <code class="docutils literal notranslate"><span class="pre">hdfs://</span></code>.</p> |
| <p>Initializes a connection to HDFS.</p> |
| <p>Connection configuration is done by passing pipeline options. |
| See <a class="reference internal" href="apache_beam.options.pipeline_options.html#apache_beam.options.pipeline_options.HadoopFileSystemOptions" title="apache_beam.options.pipeline_options.HadoopFileSystemOptions"><code class="xref py py-class docutils literal notranslate"><span class="pre">HadoopFileSystemOptions</span></code></a>.</p> |
| <dl class="classmethod"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.scheme"> |
| <em class="property">classmethod </em><code class="descname">scheme</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.scheme"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.scheme" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.join"> |
| <code class="descname">join</code><span class="sig-paren">(</span><em>base_url</em>, <em>*paths</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.join"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.join" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Join two or more pathname components.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>base_url</strong> – string path of the first component of the path. |
| Must start with hdfs://.</li> |
| <li><strong>paths</strong> – path components to be added</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">Full url after combining all the passed components.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.split"> |
| <code class="descname">split</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.split"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.split" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.mkdirs"> |
| <code class="descname">mkdirs</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.mkdirs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.mkdirs" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.has_dirs"> |
| <code class="descname">has_dirs</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.has_dirs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.has_dirs" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.create"> |
| <code class="descname">create</code><span class="sig-paren">(</span><em>url</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.create"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.create" title="Permalink to this definition">¶</a></dt> |
| <dd><table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">A Python File-like object.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.open"> |
| <code class="descname">open</code><span class="sig-paren">(</span><em>url</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.open"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.open" title="Permalink to this definition">¶</a></dt> |
| <dd><table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">A Python File-like object.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.copy"> |
| <code class="descname">copy</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.copy"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.copy" title="Permalink to this definition">¶</a></dt> |
| <dd><p>It is an error if any file to copy already exists at the destination.</p> |
| <p>Raises <code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> if any error occurred.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple"> |
| <li><strong>source_file_names</strong> – iterable of URLs.</li> |
| <li><strong>destination_file_names</strong> – iterable of URLs.</li> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.rename"> |
| <code class="descname">rename</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.rename"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.rename" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.exists"> |
| <code class="descname">exists</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.exists"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.exists" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Checks existence of url in HDFS.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>url</strong> – String in the form hdfs://…</td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">True if url exists as a file or directory in HDFS.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.size"> |
| <code class="descname">size</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.size"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.size" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.last_updated"> |
| <code class="descname">last_updated</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.last_updated"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.last_updated" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.checksum"> |
| <code class="descname">checksum</code><span class="sig-paren">(</span><em>url</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.checksum"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.checksum" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Fetches a checksum description for a URL.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">String describing the checksum.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="apache_beam.io.hadoopfilesystem.HadoopFileSystem.delete"> |
| <code class="descname">delete</code><span class="sig-paren">(</span><em>urls</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/hadoopfilesystem.html#HadoopFileSystem.delete"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.hadoopfilesystem.HadoopFileSystem.delete" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| </dd></dl> |
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