[HDFS-12351] Explicitly describe the minimal number of DataNodes required to support an EC policy in EC document.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha3
• Fix Version/s: 3.1.0
• Component/s: documentation, erasure-coding
• Hadoop Flags: Reviewed
• Assignee: Hanisha Koneru
• Reporter: Lei (Eddy) Xu
• Created: 24/Aug/17 21:30
• Updated: 02/Jan/18 21:14
• Resolved: 02/Jan/18 20:55

Description

Should explicitly call out the minimal number of DataNodes (ie.. 5 for RS(3,2)) in EC document, to make it easy to understand for non-storage people.