What is formatting of the dfs?

829

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In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?

737

---

Does this lead to security issues?

741

---

How to change from su to cloudera?

719

---

Why password is needed in ssh localhost?

804

---

What happens to a namenode, when job tracker is down?

753

---

What does the command mapred.job.tracker do?

780

---

How to come out of the insert mode?

787

---

What is the full form of fsck?

702

---

Why do we need a password-less ssh in fully distributed environment?

709

---

Can you give us some more details about ssh communication between masters and the slaves?

703

---

Can you tell us more about ssh?

716

---

What is shark?

284

---

Name a few commonly used spark ecosystems?

286

---

What is hive on spark?

390

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