Todd Lipcon created HDFS-4486: --------------------------------- Summary: Add log category for long-running DFSClient notices Key: HDFS-4486 URL: https://issues.apache.org/jira/browse/HDFS-4486 Project: Hadoop HDFS Issue Type: Improvement Reporter: Todd Lipcon Priority: Minor
There are a number of features in the DFS client which are transparent but can make a fairly big difference for performance -- two in particular are short circuit reads and native checksumming. Because we don't want log spew for clients like "hadoop fs -cat" we currently log only at DEBUG level when these features are disabled. This makes it difficult to troubleshoot/verify for long-running perf-sensitive clients like HBase. One simple solution is to add a new log category - eg o.a.h.h.DFSClient.PerformanceAdvisory - which long-running clients could enable at DEBUG level without getting the full debug spew. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira