What is a combiner and where you should use it?

725

---

When should you use sequencefileinputformat?

715

---

What is the purpose of textinputformat?

747

---

What is reduce side join in mapreduce?

659

---

What do you mean by inputformat?

661

---

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

722

---

What is a distributed cache in mapreduce framework?

666

---

What do you mean by data locality?

727

---

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

663

---

What is pig statistics?

568

---

List the relational operators in pig.

675

---

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

603

---

List the diagnostic operators in pig.

634

---

Why do we need indexing?

752

---

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?

826

---