What will you do when NameNode is down?

1021

---

What is the best hardware configuration to run Hadoop?

1631

---

Should we use RAID in Hadoop or not?

1065

---

How to change Replication Factor For below cases ?

1094

---

What are the basic available commands in Hadoop sqoop ?

974

---

On What concept the Hadoop framework works?

1208

---

How to write a Custom Key Class?

946

---

What if rack 2 and datanode fails?

1069

---

How client application interacts with the NameNode?

968

---

How is the option in Hadoop to skip the bad records?

951

---

How the HDFS Blocks are replicated?

974

---

Explain InputFormat?

1023

---

What is Rack awareness?

1004

---

How will format the HDFS ?

1078

---

what are the steps involved in commissioning adding

917

---