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https://issues.apache.org/jira/browse/HDFS-4591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599694#comment-13599694
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Hadoop QA commented on HDFS-4591:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12573242/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 1 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:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-hdfs-project/hadoop-hdfs:
org.apache.hadoop.hdfs.server.datanode.TestDataDirs
org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyIsHot
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/4084//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4084//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
>
>
> 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.
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