What are the abstractions of Apache Spark?

307

---

What is SparkContext in Apache Spark?

309

---

What are the components of Apache Spark Ecosystem?

403

---

Explain the RDD properties?

311

---

What does ‘jps’ command do?

703

---

Mention what is the use of Context Object?

722

---

What is commodity hardware?

666

---

Explain what is sqoop in Hadoop ?

739

---

Explain how do ‘map’ and ‘reduce’ works?

749

---

Explain what is the purpose of RecordReader in Hadoop?

753

---

How to restart Namenode?

756

---

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

764

---

Mention what are the data components used by Hadoop?

663

---

What does /etc /init.d do?

709

---

What is a Combiner?

750

---