Question - What is Apache Oozie?
Answer -
Apache Oozie is nothing but a scheduler that helps to schedule jobs in Hadoop and bundles them as a single logical work. Oozie jobs can largely be divided into the following two categories:
Oozie Workflow: These jobs are a set of sequential actions that need to be executed.
Oozie Coordinator: These jobs are triggered as and when there is data available for them, until which, it rests.