[HADOOP-6884] Add LOG.isDebugEnabled() guard for each LOG.debug("...")

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Hadoop Flags: Reviewed
• Assignee: Erik Steffl
• Reporter: Erik Steffl
• Created: 27/Jul/10 22:45
• Updated: 12/Dec/11 06:18
• Resolved: 28/Aug/10 22:47

Description

Each LOG.debug("...") should be executed only if LOG.isDebugEnabled() is true, in some cases it's expensive to construct the string that is being printed to log. It's much easier to always use LOG.isDebugEnabled() because it's easier to check (rather than in each case reason whether it's necessary or not).

Issue Links

• is related to: HDFS-1361 Add -fileStatus operation to NNThroughputBenchmark
• relates to: HDFS-1320 Add LOG.isDebugEnabled() guard for each LOG.debug("...")