Answer / Veerander Kumar Yadav

NameNode is the master node that manages the file system namespace, regulates access to files, and maintains the metadata for all files and directories in the HDFS. DataNodes are worker nodes that store and serve data blocks to clients upon request.

What is throughput? How does HDFS provide good throughput?

1 Answers  

---

Define HDFS and talk about their respective components?

1 Answers  

---

Explain how indexing is done in hdfs?

1 Answers  

---

How one can format Hadoop HDFS?

1 Answers  

---

What is the difference between nas (network attached storage) and hdfs?

1 Answers  

---

What is a task tracker?

1 Answers  

---

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

1 Answers  

---

How can one copy a file into HDFS with a different block size to that of existing block size configuration?

1 Answers  

---

Explain what is difference between an input split and hdfs block?

1 Answers  

---

Can we have different replication factor of the existing files in hdfs?

1 Answers  

---

Why does hive not store metadata information in hdfs?

1 Answers  

---

Why HDFS performs replication, although it results in data redundancy?

1 Answers  

---