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| <div class="section" id="module-airflow.executors.celery_executor"> |
| <span id="airflow-executors-celery-executor"></span><h1><a class="reference internal" href="#module-airflow.executors.celery_executor" title="airflow.executors.celery_executor"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.executors.celery_executor</span></code></a><a class="headerlink" href="#module-airflow.executors.celery_executor" 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="data"> |
| <dt id="airflow.executors.celery_executor.CELERY_FETCH_ERR_MSG_HEADER"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">CELERY_FETCH_ERR_MSG_HEADER</code><em class="property"> = Error fetching Celery task state</em><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CELERY_FETCH_ERR_MSG_HEADER"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CELERY_FETCH_ERR_MSG_HEADER" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="data"> |
| <dt id="airflow.executors.celery_executor.CELERY_SEND_ERR_MSG_HEADER"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">CELERY_SEND_ERR_MSG_HEADER</code><em class="property"> = Error sending Celery task</em><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CELERY_SEND_ERR_MSG_HEADER"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CELERY_SEND_ERR_MSG_HEADER" title="Permalink to this definition">¶</a></dt> |
| <dd><p>To start the celery worker, run the command: |
| airflow worker</p> |
| </dd></dl> |
| |
| <dl class="data"> |
| <dt id="airflow.executors.celery_executor.celery_configuration"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">celery_configuration</code><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#celery_configuration"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.celery_configuration" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="data"> |
| <dt id="airflow.executors.celery_executor.app"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">app</code><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#app"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.app" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="function"> |
| <dt id="airflow.executors.celery_executor.execute_command"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">execute_command</code><span class="sig-paren">(</span><em class="sig-param">command_to_exec</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#execute_command"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.execute_command" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="class"> |
| <dt id="airflow.executors.celery_executor.ExceptionWithTraceback"> |
| <em class="property">class </em><code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">ExceptionWithTraceback</code><span class="sig-paren">(</span><em class="sig-param">exception</em>, <em class="sig-param">exception_traceback</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#ExceptionWithTraceback"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.ExceptionWithTraceback" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.7)"><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></a></p> |
| <p>Wrapper class used to propagate exceptions to parent processes from subprocesses.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>exception</strong> (<a class="reference external" href="https://docs.python.org/3/library/exceptions.html#Exception" title="(in Python v3.7)"><em>Exception</em></a>) – The exception to wrap</p></li> |
| <li><p><strong>exception_traceback</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The stacktrace to wrap</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="airflow.executors.celery_executor.fetch_celery_task_state"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">fetch_celery_task_state</code><span class="sig-paren">(</span><em class="sig-param">celery_task</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#fetch_celery_task_state"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.fetch_celery_task_state" title="Permalink to this definition">¶</a></dt> |
| <dt> |
| <code class="sig-name descname">Fetch and return the state of the given celery task. The scope of this function is</code></dt> |
| <dt> |
| <code class="sig-name descname">global so that it can be called by subprocesses in the pool.</code></dt> |
| <dd><dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>celery_task</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#tuple" title="(in Python v3.7)"><em>tuple</em></a><em>(</em><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a><em>, </em><em>celery.result.AsyncResult</em><em>)</em>) – a tuple of the Celery task key and the async Celery object used |
| to fetch the task’s state</p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p>a tuple of the Celery task key and the Celery state of the task</p> |
| </dd> |
| <dt class="field-odd">Return type</dt> |
| <dd class="field-odd"><p><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#tuple" title="(in Python v3.7)">tuple</a>[<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)">str</a>, <a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)">str</a>]</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="airflow.executors.celery_executor.send_task_to_executor"> |
| <code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">send_task_to_executor</code><span class="sig-paren">(</span><em class="sig-param">task_tuple</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#send_task_to_executor"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.send_task_to_executor" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="class"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor"> |
| <em class="property">class </em><code class="sig-prename descclassname">airflow.executors.celery_executor.</code><code class="sig-name descname">CeleryExecutor</code><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference internal" href="../base_executor/index.html#airflow.executors.base_executor.BaseExecutor" title="airflow.executors.base_executor.BaseExecutor"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.executors.base_executor.BaseExecutor</span></code></a></p> |
| <p>CeleryExecutor is recommended for production use of Airflow. It allows |
| distributing the execution of task instances to multiple worker nodes.</p> |
| <p>Celery is a simple, flexible and reliable distributed system to process |
| vast amounts of messages, while providing operations with the tools |
| required to maintain such a system.</p> |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor.start"> |
| <code class="sig-name descname">start</code><span class="sig-paren">(</span><em class="sig-param">self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor.start"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor.start" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor._num_tasks_per_send_process"> |
| <code class="sig-name descname">_num_tasks_per_send_process</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">to_send_count</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor._num_tasks_per_send_process"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor._num_tasks_per_send_process" title="Permalink to this definition">¶</a></dt> |
| <dd><p>How many Celery tasks should each worker process send.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p>Number of tasks that should be sent per process</p> |
| </dd> |
| <dt class="field-even">Return type</dt> |
| <dd class="field-even"><p><a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)">int</a></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor._num_tasks_per_fetch_process"> |
| <code class="sig-name descname">_num_tasks_per_fetch_process</code><span class="sig-paren">(</span><em class="sig-param">self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor._num_tasks_per_fetch_process"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor._num_tasks_per_fetch_process" title="Permalink to this definition">¶</a></dt> |
| <dd><p>How many Celery tasks should be sent to each worker process.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p>Number of tasks that should be used per process</p> |
| </dd> |
| <dt class="field-even">Return type</dt> |
| <dd class="field-even"><p><a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)">int</a></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor.trigger_tasks"> |
| <code class="sig-name descname">trigger_tasks</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">open_slots</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor.trigger_tasks"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor.trigger_tasks" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Overwrite trigger_tasks function from BaseExecutor</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>open_slots</strong> – Number of open slots</p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor.sync"> |
| <code class="sig-name descname">sync</code><span class="sig-paren">(</span><em class="sig-param">self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor.sync"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor.sync" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.executors.celery_executor.CeleryExecutor.end"> |
| <code class="sig-name descname">end</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">synchronous=False</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/executors/celery_executor.html#CeleryExecutor.end"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.executors.celery_executor.CeleryExecutor.end" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
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