How will you convert the string ’51.2’ to a float value in the price column?

845

---

Can I do transforms or add new functionality?

95

---

Why is space not freed up when I issue drop table?

66

---

Is avro supported?

75

---

Explain what is zookeeper in kafka? Can we use kafka without zookeeper?

509

---

Mention what is apache kafka?

489

---

Mention what is the traditional method of message transfer?

539

---

Mention what is the benefits of apache kafka over the traditional technique?

579

---

How many distinct layers are of storm’s codebase?

582

---

Explain how you can improve the throughput of a remote consumer?

507

---

List the various components in kafka?

499

---

Mention what is the maximum size of the message does kafka server can receive?

506

---

Explain about the execution plans of a pig script?
or
differentiate between the logical and physical plan of an apache pig script?

435

---

You have a file employee.txt in the hdfs directory with 100 records. You want to see only the first 10 records from the employee.txt file. How will you do this?

932

---

I have a relation r. How can I get the top 10 tuples from the relation r?

538

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