Wednesday, July 10, 2013

Apache Oozie - Part 9c: Coordinator job - dataset availability triggered


1.0. What's covered in the blog?

1) Apache documentation on cooridnator jobs that execute workflows upon availability of datasets
2) A sample program that includes components of a oozie, dataset availability initiated, coordinator job - scripts/code, sample dataset and commands;  Oozie actions covered: hdfs action, email action, sqoop action (mysql database); 

Version:
Oozie 3.3.0;

Related blogs:

Blog 1: Oozie workflow - hdfs and email actions
Blog 2: Oozie workflow - hdfs, email and hive actions
Blog 3: Oozie workflow - sqoop action (Hive-mysql; sqoop export)
Blog 4: Oozie workflow - java map-reduce (new API) action
Blog 5: Oozie workflow - streaming map-reduce (python) action 
Blog 6: Oozie workflow - java main action
Blog 7: Oozie workflow - Pig action
Blog 8: Oozie sub-workflow
Blog 9a: Oozie coordinator job - time-triggered sub-workflow, fork-join control and decision control
Blog 9b: Oozie coordinator jobs - file triggered 
Blog 9c: Oozie coordinator jobs - dataset availability triggered
Blog 10: Oozie bundle jobs
Blog 11: Oozie Java API for interfacing with oozie workflows
Blog 12: Oozie workflow - shell action +passing output from one action to another
Blog 13: Oozie workflow - SSH action


2.0. Apache documentation on dataset availability triggered coordinator jobs

http://oozie.apache.org/docs/3.3.0/CoordinatorFunctionalSpec.html

3.0. Sample coordinator application


Highlights:
The coordinator application has a start time, and when the start time condition is met, it will transition to waiting state where it will look for the availability of a dataset.  Once the dataset is available, it will run the workflow specified.


Sample application - pictorial overview:


Coordinator application components:




















Coordinator application details:



Oozie web console output:
Screenshots from the execution of the sample program..


















Upon availability of the dataset...









4 comments:

  1. Hey Anagha,

    Your blogs are extremely well written and make the topics very easy to understand. Appreciate your work a lot. :) Thank you

    ReplyDelete
  2. thakyou it vry nice blog for beginners
    https://www.emexotechnologies.com/courses/big-data-analytics-training/big-data-hadoop-training/

    ReplyDelete
  3. Good Post! Thank you so much for sharing this pretty post, it was so good to read and useful to improve my knowledge as updated one, keep blogging.

    https://www.emexotechnologies.com/online-courses/big-data-hadoop-training-in-electronic-city/

    ReplyDelete
  4. Good Post! Thank you so much for sharing this pretty post, it was so good to read and useful to improve my knowledge as updated one, keep blogging.

    Big Data Hadoop training in electronic city

    ReplyDelete