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Hadoop QA commented on HDFS-4486: --------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12663785/HDFS-4486-20140822-2.patch against trunk revision . {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:red}-1 tests included{color}. The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javadoc{color}. There were no new javadoc warning messages. {color:green}+1 eclipse:eclipse{color}. The patch built with eclipse:eclipse. {color:green}+1 findbugs{color}. The patch does not introduce any new Findbugs (version 2.0.3) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:red}-1 core tests{color}. The patch failed these unit tests in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs: org.apache.hadoop.security.token.delegation.web.TestWebDelegationToken The following test timeouts occurred in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs: org.apache.hadoop.hdfs.server.datanode.TestDataNodeMultipleRegistrations {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7731//testReport/ Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7731//console This message is automatically generated. > 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 > Assignee: Zhe Zhang > Priority: Minor > Attachments: HDFS-4486-20140820.patch, HDFS-4486-20140821.patch, > HDFS-4486-20140822-2.patch, HDFS-4486-20140822.patch, > hdfs-4486-20140821-2.patch > > > 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 was sent by Atlassian JIRA (v6.2#6252)