Apache Airflow Interview Questions<\/title>\r\n \r\n<\/head>\r\n<body>\r\n <header>\r\n <h1 id=\"apache-airflow\">Apache Airflow<\/h1>\r\n <\/header>\r\n\r\n <nav>\r\n <ul>\r\n <li><a href=\"#What-is-Airflow\">What is Airflow?<\/a><\/li>\r\n <li><a href=\"#What-issues-does-Airflow-resolve\">What issues does Airflow resolve?<\/a><\/li>\r\n <li><a href=\"#Explain-how-workflow-is-designed-in-Airflow\">Explain how workflow is designed in Airflow?<\/a><\/li>\r\n <li><a href=\"#Explain-Airflow-Architecture-and-its-components\">Explain Airflow Architecture and its components?<\/a><\/li>\r\n <li><a href=\"#What-are-the-types-of-Executors-in-Airflow\">What are the types of Executors in Airflow?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-SequentialExecutor\">What are the pros and cons of SequentialExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-LocalExecutor\">What are the pros and cons of LocalExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-CeleryExecutor\">What are the pros and cons of CeleryExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-KubernetesExecutor\">What are the pros and cons of KubernetesExecutor?<\/a><\/li>\r\n <li><a href=\"#How-to-define-a-workflow-in-Airflow\">How to define a workflow in Airflow?<\/a><\/li>\r\n <li><a href=\"#How-do-you-make-the-module-available-to-airflow-if-youre-using-Docker-Compose\">How do you make the module available to airflow if you\u2019re using Docker Compose?<\/a><\/li>\r\n <li><a href=\"#How-to-schedule-DAG-in-Airflow\">How to schedule DAG in Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-XComs-In-Airflow\">What is XComs In Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-xcom_pull-in-XCom-Airflow\">What is xcom_pull in XCom Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-Jinja-templates\">What is Jinja templates?<\/a><\/li>\r\n <li><a href=\"#How-to-use-Airflow-XComs-in-Jinja-templates\">How to use Airflow XComs in Jinja templates?<\/a><\/li>\r\n <\/ul>\r\n <\/nav>\r\n\r\n <section id=\"What-is-Airflow\">\r\n <h2>What is Airflow?<\/h2>\r\n <p>Apache Airflow is an open-source workflow management platform…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-issues-does-Airflow-resolve\">\r\n <h2>What issues does Airflow resolve?<\/h2>\r\n <p>Crons are an old technique of task scheduling…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"Explain-how-workflow-is-designed-in-Airflow\">\r\n <h2>Explain how workflow is designed in Airflow?<\/h2>\r\n <p>A directed acyclic graph (DAG) is used to design an Airflow workflow…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"Explain-Airflow-Architecture-and-its-components\">\r\n <h2>Explain Airflow Architecture and its components?<\/h2>\r\n <p>There are four major components to airflow. + Webserver + This is the Airflow UI built on the Flask…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-types-of-Executors-in-Airflow\">\r\n <h2>What are the types of Executors in Airflow?<\/h2>\r\n <p>The executors are the components that actually execute the tasks…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-SequentialExecutor\">\r\n <h2>What are the pros and cons of SequentialExecutor?<\/h2>\r\n <p>Pros: + It\u2019s simple and straightforward to set up. + It\u2019s a good way to test DAGs while they\u2019re being developed…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-LocalExecutor\">\r\n <h2>What are the pros and cons of LocalExecutor?<\/h2>\r\n <p>Pros: + Able to perform multiple tasks. + Can be used to run DAGs during development…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-CeleryExecutor\">\r\n <h2>What are the pros and cons of CeleryExecutor?<\/h2>\r\n <p>Pros: + It allows for scalability. + Celery is responsible for managing the workers…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-KubernetesExecutor\">\r\n <h2>What are the pros and cons of KubernetesExecutor?<\/h2>\r\n <p>Pros: It combines the benefits of CeleryExecutor and LocalExecutor in terms of scalability and simplicity…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-define-a-workflow-in-Airflow\">\r\n <h2>How to define a workflow in Airflow?<\/h2>\r\n <p>Python files are used to define workflows. DAG (Directed Acyclic Graph)…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"how-do-you-make-the-module-available-to-airflow-if-youre-using-docker-compose\">\r\n <h2>How do you make the module available to airflow if you\u2019re using Docker Compose?<\/h2>\r\n <p>If we are using Docker Compose, then we will need to use a custom image with our own additional dependencies…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-schedule-DAG-in-Airflow\">\r\n <h2>How to schedule DAG in Airflow?<\/h2>\r\n <p>DAGs could be scheduled by passing a timedelta or a cron expression (or one of the @ presets)…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-XComs-In-Airflow\">\r\n <h2>What is XComs In Airflow?<\/h2>\r\n <p>XCom (short for cross-communication) are messages that allow data to be sent between tasks…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-xcom_pull-in-XCom-Airflow\">\r\n <h2>What is xcom_pull in XCom Airflow?<\/h2>\r\n <p>The xcom push and xcom pull methods on Task Instances are used to explicitly \u201cpush\u201d and \u201cpull\u201d XComs…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-Jinja-templates\">\r\n <h2>What is Jinja templates?<\/h2>\r\n <p>Jinja is a templating engine that is quick, expressive, and extendable…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-use-Airflow-XComs-in-Jinja-templates\">\r\n <h2>How to use Airflow XComs in Jinja templates?<\/h2>\r\n <p>We can use XComs in Jinja templates as given below: + SELECT * FROM {{ task_instance.xcom_pull(task_ids=’foo’, key=’table_name’) }}<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n<\/body>\r\n<\/html>\r\n\r\n\r\n<\/p>","protected":false},"excerpt":{"rendered":"<p> Apache Airflow Interview Questions Apache Airflow What is Airflow? What issues does Airflow resolve? Explain how workflow is designed in Airflow? Explain Airflow Architecture and its components? What are the types of Executors in Airflow? What are the pros and cons of SequentialExecutor? What are the pros and cons of LocalExecutor? What […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141"}],"collection":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/comments?post=141"}],"version-history":[{"count":9,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":175,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions\/175"}],"wp:attachment":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":141,"date":"2023-07-26T03:25:44","date_gmt":"2023-07-26T02:25:44","guid":{"rendered":"https:\/\/techedges.in\/?p=141"},"modified":"2023-07-26T04:40:36","modified_gmt":"2023-07-26T03:40:36","slug":"sky-high-success-mastering-apache-airflow-interview-questions-with-flying-colors","status":"publish","type":"post","link":"https:\/\/techedges.in\/index.php\/2023\/07\/26\/sky-high-success-mastering-apache-airflow-interview-questions-with-flying-colors\/","title":{"rendered":"Sky-High Success: Mastering Apache Airflow Interview Questions with Flying Colors!"},"content":{"rendered":"

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<\/p>\r\n\r\n\r\n\r\n Apache Airflow Interview Questions<\/title>\r\n \r\n<\/head>\r\n<body>\r\n <header>\r\n <h1 id=\"apache-airflow\">Apache Airflow<\/h1>\r\n <\/header>\r\n\r\n <nav>\r\n <ul>\r\n <li><a href=\"#What-is-Airflow\">What is Airflow?<\/a><\/li>\r\n <li><a href=\"#What-issues-does-Airflow-resolve\">What issues does Airflow resolve?<\/a><\/li>\r\n <li><a href=\"#Explain-how-workflow-is-designed-in-Airflow\">Explain how workflow is designed in Airflow?<\/a><\/li>\r\n <li><a href=\"#Explain-Airflow-Architecture-and-its-components\">Explain Airflow Architecture and its components?<\/a><\/li>\r\n <li><a href=\"#What-are-the-types-of-Executors-in-Airflow\">What are the types of Executors in Airflow?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-SequentialExecutor\">What are the pros and cons of SequentialExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-LocalExecutor\">What are the pros and cons of LocalExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-CeleryExecutor\">What are the pros and cons of CeleryExecutor?<\/a><\/li>\r\n <li><a href=\"#What-are-the-pros-and-cons-of-KubernetesExecutor\">What are the pros and cons of KubernetesExecutor?<\/a><\/li>\r\n <li><a href=\"#How-to-define-a-workflow-in-Airflow\">How to define a workflow in Airflow?<\/a><\/li>\r\n <li><a href=\"#How-do-you-make-the-module-available-to-airflow-if-youre-using-Docker-Compose\">How do you make the module available to airflow if you\u2019re using Docker Compose?<\/a><\/li>\r\n <li><a href=\"#How-to-schedule-DAG-in-Airflow\">How to schedule DAG in Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-XComs-In-Airflow\">What is XComs In Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-xcom_pull-in-XCom-Airflow\">What is xcom_pull in XCom Airflow?<\/a><\/li>\r\n <li><a href=\"#What-is-Jinja-templates\">What is Jinja templates?<\/a><\/li>\r\n <li><a href=\"#How-to-use-Airflow-XComs-in-Jinja-templates\">How to use Airflow XComs in Jinja templates?<\/a><\/li>\r\n <\/ul>\r\n <\/nav>\r\n\r\n <section id=\"What-is-Airflow\">\r\n <h2>What is Airflow?<\/h2>\r\n <p>Apache Airflow is an open-source workflow management platform…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-issues-does-Airflow-resolve\">\r\n <h2>What issues does Airflow resolve?<\/h2>\r\n <p>Crons are an old technique of task scheduling…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"Explain-how-workflow-is-designed-in-Airflow\">\r\n <h2>Explain how workflow is designed in Airflow?<\/h2>\r\n <p>A directed acyclic graph (DAG) is used to design an Airflow workflow…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"Explain-Airflow-Architecture-and-its-components\">\r\n <h2>Explain Airflow Architecture and its components?<\/h2>\r\n <p>There are four major components to airflow. + Webserver + This is the Airflow UI built on the Flask…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-types-of-Executors-in-Airflow\">\r\n <h2>What are the types of Executors in Airflow?<\/h2>\r\n <p>The executors are the components that actually execute the tasks…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-SequentialExecutor\">\r\n <h2>What are the pros and cons of SequentialExecutor?<\/h2>\r\n <p>Pros: + It\u2019s simple and straightforward to set up. + It\u2019s a good way to test DAGs while they\u2019re being developed…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-LocalExecutor\">\r\n <h2>What are the pros and cons of LocalExecutor?<\/h2>\r\n <p>Pros: + Able to perform multiple tasks. + Can be used to run DAGs during development…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-CeleryExecutor\">\r\n <h2>What are the pros and cons of CeleryExecutor?<\/h2>\r\n <p>Pros: + It allows for scalability. + Celery is responsible for managing the workers…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-are-the-pros-and-cons-of-KubernetesExecutor\">\r\n <h2>What are the pros and cons of KubernetesExecutor?<\/h2>\r\n <p>Pros: It combines the benefits of CeleryExecutor and LocalExecutor in terms of scalability and simplicity…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-define-a-workflow-in-Airflow\">\r\n <h2>How to define a workflow in Airflow?<\/h2>\r\n <p>Python files are used to define workflows. DAG (Directed Acyclic Graph)…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"how-do-you-make-the-module-available-to-airflow-if-youre-using-docker-compose\">\r\n <h2>How do you make the module available to airflow if you\u2019re using Docker Compose?<\/h2>\r\n <p>If we are using Docker Compose, then we will need to use a custom image with our own additional dependencies…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-schedule-DAG-in-Airflow\">\r\n <h2>How to schedule DAG in Airflow?<\/h2>\r\n <p>DAGs could be scheduled by passing a timedelta or a cron expression (or one of the @ presets)…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-XComs-In-Airflow\">\r\n <h2>What is XComs In Airflow?<\/h2>\r\n <p>XCom (short for cross-communication) are messages that allow data to be sent between tasks…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-xcom_pull-in-XCom-Airflow\">\r\n <h2>What is xcom_pull in XCom Airflow?<\/h2>\r\n <p>The xcom push and xcom pull methods on Task Instances are used to explicitly \u201cpush\u201d and \u201cpull\u201d XComs…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"What-is-Jinja-templates\">\r\n <h2>What is Jinja templates?<\/h2>\r\n <p>Jinja is a templating engine that is quick, expressive, and extendable…<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n\r\n <section id=\"How-to-use-Airflow-XComs-in-Jinja-templates\">\r\n <h2>How to use Airflow XComs in Jinja templates?<\/h2>\r\n <p>We can use XComs in Jinja templates as given below: + SELECT * FROM {{ task_instance.xcom_pull(task_ids=’foo’, key=’table_name’) }}<\/p>\r\n <p><a href=\"#apache-airflow\">Back to Table of Contents<\/a><\/p>\r\n <\/section>\r\n<\/body>\r\n<\/html>\r\n\r\n\r\n<\/p>","protected":false},"excerpt":{"rendered":"<p> Apache Airflow Interview Questions Apache Airflow What is Airflow? What issues does Airflow resolve? Explain how workflow is designed in Airflow? Explain Airflow Architecture and its components? What are the types of Executors in Airflow? What are the pros and cons of SequentialExecutor? What are the pros and cons of LocalExecutor? What […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141"}],"collection":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/comments?post=141"}],"version-history":[{"count":9,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":175,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions\/175"}],"wp:attachment":[{"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techedges.in\/index.php\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}