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https://issues.apache.org/jira/browse/HDFS-5189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572757#comment-14572757
 ] 

Hadoop QA commented on HDFS-5189:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  22m 13s | 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 3 new or modified test files. |
| {color:green}+1{color} | javac |   7m 26s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 36s | 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:green}+1{color} | site |   2m 57s | Site still builds. |
| {color:red}-1{color} | checkstyle |   3m 19s | The applied patch generated  1 
new checkstyle issues (total was 264, now 263). |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 31s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   5m  6s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests |  23m 16s | Tests passed in 
hadoop-common. |
| {color:red}-1{color} | hdfs tests | 160m 18s | Tests failed in hadoop-hdfs. |
| | | 236m 40s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.TestDistributedFileSystem |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12737519/HDFS-5189.1.patch |
| Optional Tests | site javadoc javac unit findbugs checkstyle |
| git revision | trunk / e830207 |
| checkstyle |  
https://builds.apache.org/job/PreCommit-HDFS-Build/11230/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
 |
| hadoop-common test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11230/artifact/patchprocess/testrun_hadoop-common.txt
 |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11230/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11230/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/11230/console |


This message was automatically generated.

> Rename the "CorruptBlocks" metric to "CorruptReplicas"
> ------------------------------------------------------
>
>                 Key: HDFS-5189
>                 URL: https://issues.apache.org/jira/browse/HDFS-5189
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.1.0-beta
>            Reporter: Harsh J
>            Assignee: J.Andreina
>            Priority: Minor
>         Attachments: HDFS-5189.1.patch
>
>
> The NameNode increments a "CorruptBlocks" metric even if only one of the 
> block's
> replicas is reported corrupt (genuine checksum fail, or even if a
> replica has a bad genstamp). In cases where this is incremented, fsck
> still reports a healthy state.
> This is confusing to users and causes false alarm as they feel this is to be 
> monitored (instead of MissingBlocks). The metric is truly trying to report 
> only corrupt replicas, not whole blocks, and ought to be renamed.
> FWIW, the "dfsadmin -report" reports a proper string of "Blocks with corrupt 
> replicas:" when printing this count.



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