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https://issues.apache.org/jira/browse/HDFS-8432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571927#comment-14571927
]
Hadoop QA commented on HDFS-8432:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 17m 44s | 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} | tests included | 0m 0s | The patch appears to
include 5 new or modified test files. |
| {color:green}+1{color} | javac | 7m 27s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 34s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 23s | The applied patch does
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle | 2m 14s | The applied patch generated 1
new checkstyle issues (total was 759, now 757). |
| {color:red}-1{color} | whitespace | 0m 4s | The patch has 6 line(s) that
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install | 1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 3m 14s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 12s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests | 161m 11s | Tests passed in hadoop-hdfs.
|
| | | 207m 14s | |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12737377/HDFS-8432.002.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / bc85959 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/11224/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HDFS-Build/11224/artifact/patchprocess/whitespace.txt
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/11224/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/11224/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.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/11224/console |
This message was automatically generated.
> Introduce a minimum compatible layout version to allow downgrade in more
> rolling upgrade use cases.
> ---------------------------------------------------------------------------------------------------
>
> Key: HDFS-8432
> URL: https://issues.apache.org/jira/browse/HDFS-8432
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode, rolling upgrades
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-8432-HDFS-Downgrade-Extended-Support.pdf,
> HDFS-8432.001.patch, HDFS-8432.002.patch
>
>
> Maintain the prior layout version during the upgrade window and reject
> attempts to use new features until after the upgrade has been finalized.
> This guarantees that the prior software version can read the fsimage and edit
> logs if the administrator decides to downgrade. This will make downgrade
> usable for the majority of NameNode layout version changes, which just
> involve introduction of new edit log operations.
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