How does pipe operation writes the result to standard output in Apache Spark?

338

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Explain how you can get exactly once messaging from kafka during data production?

486

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What is combiner aggregator?

556

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When do you call the cleanup method?

492

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What are the key benefits of using storm for real time processing?

502

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Mention what is the meaning of broker in kafka?

474

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What is zeromq?

493

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How do you define a partitioning key?

510

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Explain how to write the output into a file using storm?

513

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Which components are used for stream flow of data?

535

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Mention what is the difference between apache kafka and apache storm?

513

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Explain when using field grouping in storm, is there any time-out or limit to known field values?

558

---

Explain how you can reduce churn in isr? When does broker leave the isr?

701

---

Is it necessary to kill the topology while updating the running topology?

536

---

What is struct and explain its purpose?

477

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