Top 9 Oozie Interview Questions & Answers [For Freshers & Experienced in 2024]
Updated on Nov 22, 2022 | 8 min read | 8.9k views
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Updated on Nov 22, 2022 | 8 min read | 8.9k views
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Oozie is the workflow that helps in the execution of Hadoop jobs. The jobs can be scheduled for the execution later, monitored, and handled from anywhere. Go through these Apache Oozie Interview Questions and increase your chances of getting selected.
If you are making a career in Oozie and preparing for the interview, then read these Apache Oozie Interview Questions as it will help you in revising your Oozie concepts in the right manner. Apache Oozie is a scheduler system that helps in the execution of Hadoop jobs. The action nodes and control flow nodes make up the complete workflow of Apache Oozie.
The Apache Oozie Interview Questions given in this article will help you clear your concepts related to Oozie. If you want to learn more about apache Oozie, then do not worry as we offer courses too that you can apply for and make your concepts clear along with building your skills.
Not only Oozie, but we have numerous courses related to all the technical topics, so, if you are preparing for the role of Hadoop Admin, Hadoop consultant, Hadoop Architect, or any related role, then go for our courses prepared by faculty expertise in the fields. Also, do remember to go through the Apache Oozie Interview Questions shared in this article before going for an interview.
Apache Oozie is a scheduler that lets users schedule and executes Hadoop jobs. Users can execute multiple tasks parallelly so that more than one job can be executed simultaneously. It is a scalable, extensible, and reliable system that supports different types of Hadoop jobs. These jobs include MapReduce jobs, Hive, Streaming jobs, Scoop, and Pig.
Apache Oozie provides a great way to handle multiple jobs. There are different types of jobs that users want to schedule to be run later or the tasks that need to follow a specific sequence during execution. These kinds of executions can be made easy with the help of Apache Oozie. Using Apache Oozie, the administrator or the user can execute the various independent jobs parallelly, run the jobs back to back following a certain sequence, or can control the jobs from anywhere thus, making it very useful.
Read: Hadoop Developer Salary in India
The Apache Oozie workflow consists of the control flow nodes and action nodes.
Below is the explanation of these nodes:
The fork and join nodes in Oozie get used in pairs. The fork node splits the execution path into many concurrent execution paths. The join node joins the two or more concurrent execution paths into a single one. The join node is the children of the fork nodes that concurrently join to make join nodes.
Below is the list of some useful EL functions of Oozie workflow:
Read: Hadoop Interview Questions & Answers
Below is the list of action nodes that Apache Oozie workflow supports in and helps in the computation tasks:
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Oozie bundle allows the user to execute the job in batches. The Oozie bundle jobs are started, stopped, suspended, resumed, re-run, or killed in batches, thus providing better operational control.
The pipeline in Oozie helps in connecting the multiple jobs in a workflow that executes regularly but during different intervals. In this pipeline, the output of multiple executions of workflow becomes the input of the next scheduled job in the workflow that gets executed back to back in the pipeline. The joined chain of workflows forms the Oozie pipeline of jobs.
The job in the Apache Oozie workflow transition through the blow states:
Also Read: Apache Spark Developer Salary in India: For Freshers & Experienced
These Apache Oozie Interview Questions will be helpful to you in making you interview-ready for your next personal interview. These are the questions that interviewers ask very frequently to the interviewee in Oozie-related interviews. You must have a look at these Apache Oozie interview questions before appearing for an interview as these questions will help you in the revision of the concepts and boost your confidence.
Also, do not forget to visit our website to know more about the related courses. We wish you all the very best for your interview and happy learning!
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