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

887

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Can I do transforms or add new functionality?

95

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

66

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Is avro supported?

75

---

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

537

---

Mention what is apache kafka?

522

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Mention what is the traditional method of message transfer?

574

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

613

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How many distinct layers are of storm’s codebase?

609

---

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

551

---

List the various components in kafka?

539

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

537

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

475

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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?

961

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

570

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