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https://issues.apache.org/jira/browse/HDFS-4015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14970211#comment-14970211
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Hadoop QA commented on HDFS-4015:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch | 28m 33s | Pre-patch trunk has 1 extant
Findbugs (version 3.0.0) warnings. |
| {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 2 new or modified test files. |
| {color:green}+1{color} | javac | 9m 55s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 12m 16s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 27s | The applied patch does
not increase the total number of release audit warnings. |
| {color:green}+1{color} | site | 4m 2s | Site still builds. |
| {color:red}-1{color} | checkstyle | 3m 10s | The applied patch generated 3
new checkstyle issues (total was 138, now 138). |
| {color:green}+1{color} | whitespace | 0m 2s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 2m 13s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 39s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 5m 11s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 32s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 53m 57s | Tests failed in hadoop-hdfs. |
| {color:green}+1{color} | hdfs tests | 0m 37s | Tests passed in
hadoop-hdfs-client. |
| | | 124m 39s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.TestReplaceDatanodeOnFailure |
| | hadoop.cli.TestHDFSCLI |
| | hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12768132/HDFS-4015.006.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle site |
| git revision | trunk / 124a412 |
| Pre-patch Findbugs warnings |
https://builds.apache.org/job/PreCommit-HDFS-Build/13140/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/13140/artifact/patchprocess/diffcheckstylehadoop-hdfs-client.txt
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13140/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| hadoop-hdfs-client test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13140/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/13140/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.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/13140/console |
This message was automatically generated.
> Safemode should count and report orphaned blocks
> ------------------------------------------------
>
> Key: HDFS-4015
> URL: https://issues.apache.org/jira/browse/HDFS-4015
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.0.0
> Reporter: Todd Lipcon
> Assignee: Anu Engineer
> Attachments: HDFS-4015.001.patch, HDFS-4015.002.patch,
> HDFS-4015.003.patch, HDFS-4015.004.patch, HDFS-4015.005.patch,
> HDFS-4015.006.patch
>
>
> The safemode status currently reports the number of unique reported blocks
> compared to the total number of blocks referenced by the namespace. However,
> it does not report the inverse: blocks which are reported by datanodes but
> not referenced by the namespace.
> In the case that an admin accidentally starts up from an old image, this can
> be confusing: safemode and fsck will show "corrupt files", which are the
> files which actually have been deleted but got resurrected by restarting from
> the old image. This will convince them that they can safely force leave
> safemode and remove these files -- after all, they know that those files
> should really have been deleted. However, they're not aware that leaving
> safemode will also unrecoverably delete a bunch of other block files which
> have been orphaned due to the namespace rollback.
> I'd like to consider reporting something like: "900000 of expected 1000000
> blocks have been reported. Additionally, 10000 blocks have been reported
> which do not correspond to any file in the namespace. Forcing exit of
> safemode will unrecoverably remove those data blocks"
> Whether this statistic is also used for some kind of "inverse safe mode" is
> the logical next step, but just reporting it as a warning seems easy enough
> to accomplish and worth doing.
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