What is combiner aggregator?

644

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When do you call the cleanup method?

554

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

578

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Mention what is the meaning of broker in kafka?

547

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What is zeromq?

558

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How do you define a partitioning key?

570

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

597

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Which components are used for stream flow of data?

603

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

597

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

627

---

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

813

---

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

626

---

What is struct and explain its purpose?

575

---

How can we kill a topology?

597

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While installing, why does apache have three config files - srm.conf, access.conf and httpd.conf?

611

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