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| <div class="section" id="module-airflow.operators.hive_stats_operator"> |
| <span id="airflow-operators-hive-stats-operator"></span><h1><a class="reference internal" href="#module-airflow.operators.hive_stats_operator" title="airflow.operators.hive_stats_operator"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.operators.hive_stats_operator</span></code></a><a class="headerlink" href="#module-airflow.operators.hive_stats_operator" title="Permalink to this headline">¶</a></h1> |
| <div class="section" id="module-contents"> |
| <h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline">¶</a></h2> |
| <dl class="class"> |
| <dt id="airflow.operators.hive_stats_operator.HiveStatsCollectionOperator"> |
| <em class="property">class </em><code class="sig-prename descclassname">airflow.operators.hive_stats_operator.</code><code class="sig-name descname">HiveStatsCollectionOperator</code><span class="sig-paren">(</span><em class="sig-param">table</em>, <em class="sig-param">partition</em>, <em class="sig-param">extra_exprs=None</em>, <em class="sig-param">col_blacklist=None</em>, <em class="sig-param">assignment_func=None</em>, <em class="sig-param">metastore_conn_id='metastore_default'</em>, <em class="sig-param">presto_conn_id='presto_default'</em>, <em class="sig-param">mysql_conn_id='airflow_db'</em>, <em class="sig-param">*args</em>, <em class="sig-param">**kwargs</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/operators/hive_stats_operator.html#HiveStatsCollectionOperator"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.operators.hive_stats_operator.HiveStatsCollectionOperator" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference internal" href="../../models/index.html#airflow.models.BaseOperator" title="airflow.models.BaseOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.models.BaseOperator</span></code></a></p> |
| <p>Gathers partition statistics using a dynamically generated Presto |
| query, inserts the stats into a MySql table with this format. Stats |
| overwrite themselves if you rerun the same date/partition.</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">TABLE</span> <span class="n">hive_stats</span> <span class="p">(</span> |
| <span class="n">ds</span> <span class="n">VARCHAR</span><span class="p">(</span><span class="mi">16</span><span class="p">),</span> |
| <span class="n">table_name</span> <span class="n">VARCHAR</span><span class="p">(</span><span class="mi">500</span><span class="p">),</span> |
| <span class="n">metric</span> <span class="n">VARCHAR</span><span class="p">(</span><span class="mi">200</span><span class="p">),</span> |
| <span class="n">value</span> <span class="n">BIGINT</span> |
| <span class="p">);</span> |
| </pre></div> |
| </div> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>table</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – the source table, in the format <code class="docutils literal notranslate"><span class="pre">database.table_name</span></code>. (templated)</p></li> |
| <li><p><strong>partition</strong> (<em>dict of {col:value}</em>) – the source partition. (templated)</p></li> |
| <li><p><strong>extra_exprs</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.8)"><em>dict</em></a>) – dict of expression to run against the table where |
| keys are metric names and values are Presto compatible expressions</p></li> |
| <li><p><strong>col_blacklist</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#list" title="(in Python v3.8)"><em>list</em></a>) – list of columns to blacklist, consider |
| blacklisting blobs, large json columns, …</p></li> |
| <li><p><strong>assignment_func</strong> (<em>function</em>) – a function that receives a column name and |
| a type, and returns a dict of metric names and an Presto expressions. |
| If None is returned, the global defaults are applied. If an |
| empty dictionary is returned, no stats are computed for that |
| column.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| <dl class="attribute"> |
| <dt id="airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.template_fields"> |
| <code class="sig-name descname">template_fields</code><em class="property"> = ['table', 'partition', 'ds', 'dttm']</em><a class="reference internal" href="../../../../_modules/airflow/operators/hive_stats_operator.html#HiveStatsCollectionOperator.template_fields"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.template_fields" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.ui_color"> |
| <code class="sig-name descname">ui_color</code><em class="property"> = #aff7a6</em><a class="reference internal" href="../../../../_modules/airflow/operators/hive_stats_operator.html#HiveStatsCollectionOperator.ui_color"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.ui_color" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.get_default_exprs"> |
| <code class="sig-name descname">get_default_exprs</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">col</em>, <em class="sig-param">col_type</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/operators/hive_stats_operator.html#HiveStatsCollectionOperator.get_default_exprs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.get_default_exprs" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.execute"> |
| <code class="sig-name descname">execute</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">context=None</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/operators/hive_stats_operator.html#HiveStatsCollectionOperator.execute"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.operators.hive_stats_operator.HiveStatsCollectionOperator.execute" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
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