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| <h1>Source code for airflow.contrib.hooks.spark_sql_hook</h1><div class="highlight"><pre> |
| <span></span><span class="c1"># -*- coding: utf-8 -*-</span> |
| <span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| <span class="c1">#</span> |
| <span class="kn">import</span> <span class="nn">subprocess</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.hooks.base_hook</span> <span class="k">import</span> <span class="n">BaseHook</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span> |
| |
| |
| <div class="viewcode-block" id="SparkSqlHook"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/spark_sql_hook/index.html#airflow.contrib.hooks.spark_sql_hook.SparkSqlHook">[docs]</a><span class="k">class</span> <span class="nc">SparkSqlHook</span><span class="p">(</span><span class="n">BaseHook</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> This hook is a wrapper around the spark-sql binary. It requires that the</span> |
| <span class="sd"> "spark-sql" binary is in the PATH.</span> |
| |
| <span class="sd"> :param sql: The SQL query to execute</span> |
| <span class="sd"> :type sql: str</span> |
| <span class="sd"> :param conf: arbitrary Spark configuration property</span> |
| <span class="sd"> :type conf: str (format: PROP=VALUE)</span> |
| <span class="sd"> :param conn_id: connection_id string</span> |
| <span class="sd"> :type conn_id: str</span> |
| <span class="sd"> :param total_executor_cores: (Standalone & Mesos only) Total cores for all executors</span> |
| <span class="sd"> (Default: all the available cores on the worker)</span> |
| <span class="sd"> :type total_executor_cores: int</span> |
| <span class="sd"> :param executor_cores: (Standalone & YARN only) Number of cores per</span> |
| <span class="sd"> executor (Default: 2)</span> |
| <span class="sd"> :type executor_cores: int</span> |
| <span class="sd"> :param executor_memory: Memory per executor (e.g. 1000M, 2G) (Default: 1G)</span> |
| <span class="sd"> :type executor_memory: str</span> |
| <span class="sd"> :param keytab: Full path to the file that contains the keytab</span> |
| <span class="sd"> :type keytab: str</span> |
| <span class="sd"> :param master: spark://host:port, mesos://host:port, yarn, or local</span> |
| <span class="sd"> :type master: str</span> |
| <span class="sd"> :param name: Name of the job.</span> |
| <span class="sd"> :type name: str</span> |
| <span class="sd"> :param num_executors: Number of executors to launch</span> |
| <span class="sd"> :type num_executors: int</span> |
| <span class="sd"> :param verbose: Whether to pass the verbose flag to spark-sql</span> |
| <span class="sd"> :type verbose: bool</span> |
| <span class="sd"> :param yarn_queue: The YARN queue to submit to (Default: "default")</span> |
| <span class="sd"> :type yarn_queue: str</span> |
| <span class="sd"> """</span> |
| <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> |
| <span class="n">sql</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">conn_id</span><span class="o">=</span><span class="s1">'spark_sql_default'</span><span class="p">,</span> |
| <span class="n">total_executor_cores</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">executor_cores</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">executor_memory</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">keytab</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">principal</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">master</span><span class="o">=</span><span class="s1">'yarn'</span><span class="p">,</span> |
| <span class="n">name</span><span class="o">=</span><span class="s1">'default-name'</span><span class="p">,</span> |
| <span class="n">num_executors</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">verbose</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">yarn_queue</span><span class="o">=</span><span class="s1">'default'</span> |
| <span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sql</span> <span class="o">=</span> <span class="n">sql</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_conf</span> <span class="o">=</span> <span class="n">conf</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="n">conn_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_total_executor_cores</span> <span class="o">=</span> <span class="n">total_executor_cores</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_executor_cores</span> <span class="o">=</span> <span class="n">executor_cores</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_executor_memory</span> <span class="o">=</span> <span class="n">executor_memory</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_keytab</span> <span class="o">=</span> <span class="n">keytab</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_principal</span> <span class="o">=</span> <span class="n">principal</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_master</span> <span class="o">=</span> <span class="n">master</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_num_executors</span> <span class="o">=</span> <span class="n">num_executors</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_verbose</span> <span class="o">=</span> <span class="n">verbose</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_yarn_queue</span> <span class="o">=</span> <span class="n">yarn_queue</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span> <span class="o">=</span> <span class="kc">None</span> |
| |
| <div class="viewcode-block" id="SparkSqlHook.get_conn"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/spark_sql_hook/index.html#airflow.contrib.hooks.spark_sql_hook.SparkSqlHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">pass</span></div> |
| |
| <div class="viewcode-block" id="SparkSqlHook._prepare_command"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/spark_sql_hook/index.html#airflow.contrib.hooks.spark_sql_hook.SparkSqlHook._prepare_command">[docs]</a> <span class="k">def</span> <span class="nf">_prepare_command</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cmd</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Construct the spark-sql command to execute. Verbose output is enabled</span> |
| <span class="sd"> as default.</span> |
| |
| <span class="sd"> :param cmd: command to append to the spark-sql command</span> |
| <span class="sd"> :type cmd: str</span> |
| <span class="sd"> :return: full command to be executed</span> |
| <span class="sd"> """</span> |
| <span class="n">connection_cmd</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"spark-sql"</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_conf</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">conf_el</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_conf</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s2">","</span><span class="p">):</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--conf"</span><span class="p">,</span> <span class="n">conf_el</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_total_executor_cores</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--total-executor-cores"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_total_executor_cores</span><span class="p">)]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_executor_cores</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--executor-cores"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_executor_cores</span><span class="p">)]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_executor_memory</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--executor-memory"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_executor_memory</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_keytab</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--keytab"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_keytab</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_principal</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--principal"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_principal</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_num_executors</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--num-executors"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_num_executors</span><span class="p">)]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sql</span><span class="p">:</span> |
| <span class="n">sql</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sql</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> |
| <span class="k">if</span> <span class="n">sql</span><span class="o">.</span><span class="n">endswith</span><span class="p">(</span><span class="s2">".sql"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">sql</span><span class="o">.</span><span class="n">endswith</span><span class="p">(</span><span class="s2">".hql"</span><span class="p">):</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"-f"</span><span class="p">,</span> <span class="n">sql</span><span class="p">]</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"-e"</span><span class="p">,</span> <span class="n">sql</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_master</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--master"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_master</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--name"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_verbose</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--verbose"</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_yarn_queue</span><span class="p">:</span> |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="p">[</span><span class="s2">"--queue"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_yarn_queue</span><span class="p">]</span> |
| |
| <span class="n">connection_cmd</span> <span class="o">+=</span> <span class="n">cmd</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Spark-Sql cmd: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">connection_cmd</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">connection_cmd</span></div> |
| |
| <div class="viewcode-block" id="SparkSqlHook.run_query"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/spark_sql_hook/index.html#airflow.contrib.hooks.spark_sql_hook.SparkSqlHook.run_query">[docs]</a> <span class="k">def</span> <span class="nf">run_query</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cmd</span><span class="o">=</span><span class="s2">""</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Remote Popen (actually execute the Spark-sql query)</span> |
| |
| <span class="sd"> :param cmd: command to remotely execute</span> |
| <span class="sd"> :param kwargs: extra arguments to Popen (see subprocess.Popen)</span> |
| <span class="sd"> """</span> |
| <span class="n">spark_sql_cmd</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_prepare_command</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">Popen</span><span class="p">(</span><span class="n">spark_sql_cmd</span><span class="p">,</span> |
| <span class="n">stdout</span><span class="o">=</span><span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">,</span> |
| <span class="n">stderr</span><span class="o">=</span><span class="n">subprocess</span><span class="o">.</span><span class="n">STDOUT</span><span class="p">,</span> |
| <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| |
| <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="nb">iter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_sp</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">readline</span><span class="p">,</span> <span class="s1">''</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">line</span><span class="p">)</span> |
| |
| <span class="n">returncode</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span><span class="o">.</span><span class="n">wait</span><span class="p">()</span> |
| |
| <span class="k">if</span> <span class="n">returncode</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s2">"Cannot execute </span><span class="si">{}</span><span class="s2"> on </span><span class="si">{}</span><span class="s2">. Process exit code: </span><span class="si">{}</span><span class="s2">."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span> |
| <span class="n">cmd</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_conn</span><span class="o">.</span><span class="n">host</span><span class="p">,</span> <span class="n">returncode</span></div> |
| <span class="p">)</span> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="SparkSqlHook.kill"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/spark_sql_hook/index.html#airflow.contrib.hooks.spark_sql_hook.SparkSqlHook.kill">[docs]</a> <span class="k">def</span> <span class="nf">kill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span><span class="o">.</span><span class="n">poll</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Killing the Spark-Sql job"</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sp</span><span class="o">.</span><span class="n">kill</span><span class="p">()</span></div></div> |
| </pre></div> |
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