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Hadoop QA commented on HDFS-4591: --------------------------------- {color:green}+1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12573454/HDFS-4591.patch against trunk revision . {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 3 new or modified test files. {color:green}+1 tests included appear to have a timeout.{color} {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javadoc{color}. The javadoc tool did not generate any 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 1.3.9) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:green}+1 core tests{color}. The patch passed unit tests in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs. {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4092//testReport/ Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4092//console This message is automatically generated. > HA clients can fail to fail over while Standby NN is performing long > checkpoint > ------------------------------------------------------------------------------- > > Key: HDFS-4591 > URL: https://issues.apache.org/jira/browse/HDFS-4591 > Project: Hadoop HDFS > Issue Type: Bug > Components: ha, namenode > Affects Versions: 2.0.4-alpha > Reporter: Aaron T. Myers > Assignee: Aaron T. Myers > Attachments: HDFS-4591.patch, HDFS-4591.patch, HDFS-4591.patch > > > Clients know to fail over to talk to the Active NN when they perform an RPC > to the Standby NN and it throws a StandbyException. However, most places in > the code that check if the NN is in the standby state do so inside the FSNS > fsLock. Since this lock is held for the duration of the saveNamespace during > a checkpoint, StandbyExceptions will not be thrown during this time. -- 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