What is combiner aggregator?

590

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When do you call the cleanup method?

522

---

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

538

---

Mention what is the meaning of broker in kafka?

505

---

What is zeromq?

522

---

How do you define a partitioning key?

533

---

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

544

---

Which components are used for stream flow of data?

573

---

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

551

---

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

583

---

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

740

---

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

576

---

What is struct and explain its purpose?

510

---

How can we kill a topology?

541

---

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

567

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