Illustrate a simple example of the working of MapReduce.

576

---

For a Hadoop job, how will you write a custom partitioner?

607

---

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

652

---

what is the Hadoop MapReduce APIs contract for a key and value class?

623

---

When is it suggested to use a combiner in a MapReduce job?

585

---

What is the process of changing the split size if there is limited storage space on Commodity Hardware?

651

---

how Hadoop is different from other data processing tools?

596

---

List the configuration parameters that have to be specified when running a MapReduce job.

568

---

what is a sequence file in Hadoop?

634

---

What are the key differences between Pig vs MapReduce?

559

---

When is it not recommended to use MapReduce paradigm for large

575

---

what happens in textinformat ?

618

---

Explain the differences between a combiner and reducer

605

---

What is a TaskInstance?

629

---

What is the default input type in MapReduce?

617

---