What will you do when NameNode is down?

1059

---

What is the best hardware configuration to run Hadoop?

1667

---

Should we use RAID in Hadoop or not?

1112

---

How to change Replication Factor For below cases ?

1152

---

What are the basic available commands in Hadoop sqoop ?

1012

---

On What concept the Hadoop framework works?

1237

---

How to write a Custom Key Class?

975

---

What if rack 2 and datanode fails?

1103

---

How client application interacts with the NameNode?

993

---

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

986

---

How the HDFS Blocks are replicated?

1003

---

Explain InputFormat?

1071

---

What is Rack awareness?

1044

---

How will format the HDFS ?

1122

---

what are the steps involved in commissioning adding

949

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