What is formatting of the dfs?

822

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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?

735

---

Does this lead to security issues?

736

---

How to change from su to cloudera?

719

---

Why password is needed in ssh localhost?

787

---

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

745

---

What does the command mapred.job.tracker do?

772

---

How to come out of the insert mode?

782

---

What is the full form of fsck?

700

---

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

706

---

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

699

---

Can you tell us more about ssh?

713

---

What is shark?

284

---

Name a few commonly used spark ecosystems?

284

---

What is hive on spark?

387

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