[HDFS-3447] StandbyException should not be logged at ERROR level on server

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.0.0-alpha
• Component/s: ha
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 20/May/12 06:56
• Updated: 24/Apr/18 01:33

Description

Currently, the standby NN will log StandbyExceptions at ERROR level any time a client tries to connect to it. So, if the second NN in an HA pair is active, the first NN will spew a lot of these errors in the log, as each client gets redirected to the proper NN. Instead, this should be at INFO level, and should probably be logged in a less "scary" manner (eg "Received READ request from client 1.2.3.4, but in Standby state. Redirecting client to other NameNode.")

Issue Links

• is related to: HDFS-8910 Downgrade log "Operation category READ is not supported in state..." to DEBUG level.