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https://issues.apache.org/jira/browse/HDFS-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14099964#comment-14099964
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Hadoop QA commented on HDFS-3862:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12662361/HDFS-3862.001.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 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
hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal:
org.apache.hadoop.ha.TestZKFailoverController
org.apache.hadoop.hdfs.server.namenode.ha.TestFailoverAndFencing
org.apache.hadoop.hdfs.tools.TestDFSHAAdmin
org.apache.hadoop.hdfs.tools.TestDFSHAAdminMiniCluster
org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover
The following test timeouts occurred in
hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs
hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal:
org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyCheckpoints
org.apache.hadoop.hdfs.server.namenode.ha.TestHAMetrics
org.apache.hadoop.hdfs.server.namenode.ha.TestHAStateTransitions
org.apache.hadoop.hdfs.server.namenode.ha.TestDelegationTokensWithHA
org.apache.hadoop.hdfs.server.namenode.TestValidateConfigurationSettings
org.apache.hadoop.contrib.bkjournal.TestBookKeeperAsHASharedDir
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/7656//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7656//console
This message is automatically generated.
> QJM: don't require a fencer to be configured if shared storage has built-in
> single-writer semantics
> ---------------------------------------------------------------------------------------------------
>
> Key: HDFS-3862
> URL: https://issues.apache.org/jira/browse/HDFS-3862
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Yi Liu
> Attachments: HDFS-3862.001.patch
>
>
> Currently, NN HA requires that the administrator configure a fencing method
> to ensure that only a single NameNode may write to the shared storage at a
> time. Some shared edits storage implementations (like QJM) inherently enforce
> single-writer semantics at the storage level, and thus the user should not be
> forced to specify one.
> We should extend the JournalManager interface so that the HA code can operate
> without a configured fencer if the JM has such built-in fencing.
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