[ 
https://issues.apache.org/jira/browse/HDFS-9274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966582#comment-14966582
 ] 

Hadoop QA commented on HDFS-9274:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  15m 58s | Pre-patch trunk compilation is 
healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any 
@author tags. |
| {color:red}-1{color} | tests included |   0m  0s | The patch doesn't appear 
to include any new or modified tests.  Please justify why no new tests are 
needed for this patch. Also please list what manual steps were performed to 
verify this patch. |
| {color:green}+1{color} | javac |   7m 57s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |  10m 41s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 24s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 30s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 35s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | native |   3m 14s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests |  49m 32s | Tests passed in hadoop-hdfs. 
|
| | |  89m 55s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12767719/HDFS-9274.001.patch |
| Optional Tests | javadoc javac unit |
| git revision | trunk / 0c4af0f |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13104/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13104/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf904.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/13104/console |


This message was automatically generated.

> Default value of dfs.datanode.directoryscan.throttle.limit.ms.per.sec should 
> be consistent
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9274
>                 URL: https://issues.apache.org/jira/browse/HDFS-9274
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>            Reporter: Yi Liu
>            Assignee: Yi Liu
>            Priority: Trivial
>         Attachments: HDFS-9274.001.patch
>
>
> Always see following error log while running:
> {noformat}
> ERROR datanode.DirectoryScanner (DirectoryScanner.java:<init>(430)) - 
> dfs.datanode.directoryscan.throttle.limit.ms.per.sec set to value below 1 
> ms/sec. Assuming default value of 1000
> {noformat}
> {code}
> <property>
>   <name>dfs.datanode.directoryscan.throttle.limit.ms.per.sec</name>
>   <value>0</value>
> ...
> {code}
> The default value should be 1000 and consistent with 
> DFS_DATANODE_DIRECTORYSCAN_THROTTLE_LIMIT_MS_PER_SEC_DEFAULT



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