[HDFS-13712] BlockReaderRemote.read() logging improvement

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.2.0, 3.1.1, 3.0.4
• Component/s: hdfs-client
• Target Version/s: 3.2.0, 3.1.1, 3.0.4
• Assignee: Gergo Repas
• Reporter: Gergo Repas
• Created: 02/Jul/18 12:53
• Updated: 03/Jul/18 09:37
• Resolved: 03/Jul/18 09:08

Description

Logger.isTraceEnabled() shows up as a hot method via calls from BlockReaderRemote.read(). The attached patch reduces the number of such calls when trace-logging is turned off, and is on-par when the trace-logging is turned on.