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___________ nodes are the mechanism by which a workflow triggers the execution of a computation/processing task.

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___________ nodes are the mechanism by which a workflow triggers the execution of a computation/processing task.

(a) Server

(b) Client

(c) Mechanism

(d) Action

I got this question in an online quiz.

The query is from Oozie with Hadoop in section Oozie, Orchestration, Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications of Hadoop

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The correct answer is (d) Action

The explanation is: Oozie provides support for the following types of actions: Hadoop map-reduce, Hadoop file system, Pig, Java and Oozie sub-workflow.

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