What is a combiner and where you should use it?

658

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When should you use sequencefileinputformat?

657

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What is the purpose of textinputformat?

700

---

What is reduce side join in mapreduce?

610

---

What do you mean by inputformat?

610

---

What are the various configuration parameters required to run a mapreduce job?

654

---

What is a distributed cache in mapreduce framework?

601

---

What do you mean by data locality?

671

---

How can we assure that the values regarding a particular key goes to the same reducer?

605

---

What is pig statistics?

527

---

List the relational operators in pig.

627

---

What are all stats classes in the java api package available?

558

---

List the diagnostic operators in pig.

586

---

Why do we need indexing?

709

---

What will happen in case you have not issued the command: ‘set hive.enforce.bucketing=true;’ before bucketing a table in hive in apache hive 0.x or 1.x?

771

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