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https://issues.apache.org/jira/browse/HDFS-8914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14969773#comment-14969773
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Hadoop QA commented on HDFS-8914:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 3m 39s | Pre-patch trunk compilation is
healthy. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:green}+1{color} | release audit | 0m 23s | The applied patch does
not increase the total number of release audit warnings. |
| {color:green}+1{color} | site | 3m 37s | Site still builds. |
| {color:green}+1{color} | whitespace | 0m 0s | The patch has no lines that
end in whitespace. |
| | | 7m 43s | |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12768106/HDFS-8914.2.patch |
| Optional Tests | site |
| git revision | trunk / 960201b |
| Java | 1.7.0_55 |
| uname | Linux asf905.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP
PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/13133/console |
This message was automatically generated.
> Documentation conflict regarding fail-over of Namenode
> ------------------------------------------------------
>
> Key: HDFS-8914
> URL: https://issues.apache.org/jira/browse/HDFS-8914
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: documentation
> Affects Versions: 2.7.1
> Environment: Documentation page in live
> Reporter: Ravindra Babu
> Assignee: Lars Francke
> Priority: Trivial
> Attachments: HDFS-8914.1.patch, HDFS-8914.2.patch
>
>
> Please refer to these two links and correct one of them.
> http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html
> The NameNode machine is a single point of failure for an HDFS cluster. If the
> NameNode machine fails, manual intervention is necessary. Currently,
> automatic restart and failover of the NameNode software to another machine is
> not supported.
> http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html
> The HDFS High Availability feature addresses the above problems by providing
> the option of running two redundant NameNodes in the same cluster in an
> Active/Passive configuration with a hot standby. This allows a fast failover
> to a new NameNode in the case that a machine crashes, or a graceful
> administrator-initiated failover for the purpose of planned maintenance.
> Please update hdfsDesign article with same facts to avoid confusion in
> Reader's mind..
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