____ is a key feature in Oozie that allows integration with systems outside of Hadoop for triggering workflows.
- Coordinator
- Bundle
- EL (Expression Language)
- Callback
The correct option is 'Bundle.' In Oozie, a Bundle is a key feature that allows the integration with systems outside of Hadoop for triggering workflows. It helps in managing and coordinating multiple workflows as a single unit, facilitating more complex data processing scenarios.
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