What is combiner aggregator?

600

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When do you call the cleanup method?

530

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

546

---

Mention what is the meaning of broker in kafka?

507

---

What is zeromq?

529

---

How do you define a partitioning key?

546

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

565

---

Which components are used for stream flow of data?

580

---

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

559

---

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

595

---

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

752

---

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

581

---

What is struct and explain its purpose?

519

---

How can we kill a topology?

553

---

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

579

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