[HDFS-11088] Quash unnecessary safemode WARN message during NameNode startup

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.9.0, 3.0.0-alpha2
• Labels: newbie
• Target Version/s: 3.0.0-alpha2
• Assignee: Yiqun Lin
• Reporter: Andrew Wang
• Created: 01/Nov/16 23:47
• Updated: 04/Nov/16 03:18
• Resolved: 03/Nov/16 22:32

Description

I tried starting a NameNode on a freshly formatted cluster, and it produced this WARN log:

16/11/01 16:42:44 WARN blockmanagement.BlockManagerSafeMode: forceExit used when normal exist would suffice. Treating force exit as normal safe mode exit.

I didn't do any special commands related to safemode, so this log should be quashed.

I didn't try the branch-2's, but it's likely this issue exists there as well.