Answer / Sabhajeet Sonkar

The main configuration parameters in MapReduce include input and output format classes, mapper, combiner, reducer, partitioner, and the number of mappers, reducers, sorting comparators, and other job-specific properties.

What is optimal size of a file for distributed cache?

1 Answers  

---

what is "map" and what is "reducer" in Hadoop?

1 Answers  

---

What is a mapreduce algorithm?

1 Answers  

---

Name job control options specified by mapreduce.

1 Answers  

---

Is reduce-only job possible in Hadoop MapReduce?

1 Answers  

---

What is an identity mapper and identity reducer?

1 Answers  

---

What is Shuffling and Sorting in a MapReduce?

1 Answers  

---

Mention Hadoop core components?

1 Answers  

---

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

1 Answers  

---

Explain the difference between a MapReduce InputSplit and HDFS block?

1 Answers  

---

What is reduce side join in mapreduce?

1 Answers  

---

What are mapreduce new and old apis while writing map reduce program?. Explain how it works

1 Answers  

---