[HADOOP-2373] Name node silently changes state

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Fix Version/s: 0.17.0
• Assignee: Konstantin Shvachko
• Reporter: Robert Chansler
• Created: 07/Dec/07 02:58
• Updated: 08/Jul/09 16:42
• Resolved: 20/Mar/08 17:30

Description

1. The name node should create a log message when entering the "extension" period of safe mode after achieving the minimal replication threshold.

Logging state changes is a Good Idea. When diagnosing 2159, there is no evidence whether the name node is in the extension period or not.

2. When in safe mode, the name node should periodically explain why it is still in safe mode. (2159 again)

Issue Links

• relates to: HADOOP-2159 Namenode stuck in safemode