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

365

---

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

521

---

What is combiner aggregator?

590

---

When do you call the cleanup method?

522

---

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

539

---

Mention what is the meaning of broker in kafka?

505

---

What is zeromq?

523

---

How do you define a partitioning key?

537

---

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

544

---

Which components are used for stream flow of data?

575

---

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?

585

---

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

744

---

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

576

---

What is struct and explain its purpose?

510

---