What is a combiner and where you should use it?

672

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When should you use sequencefileinputformat?

672

---

What is the purpose of textinputformat?

712

---

What is reduce side join in mapreduce?

622

---

What do you mean by inputformat?

624

---

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

673

---

What is a distributed cache in mapreduce framework?

617

---

What do you mean by data locality?

685

---

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

616

---

What is pig statistics?

535

---

List the relational operators in pig.

647

---

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

567

---

List the diagnostic operators in pig.

596

---

Why do we need indexing?

724

---

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?

782

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