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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6363) Improve concurrency while checking inclusion and exclusion of datanodes
Date Sun, 03 May 2015 09:37:06 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525742#comment-14525742
] 

Hadoop QA commented on HDFS-6363:
---------------------------------

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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 20s | 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 47s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 44s | 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:red}-1{color} | checkstyle |   2m 15s | The applied patch generated  1004 new checkstyle
issues (total was 5, now 510). |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that end in whitespace.
Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 35s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   3m  8s | The patch does not introduce any new Findbugs
(version 2.0.3) warnings. |
| {color:green}+1{color} | native |   3m 23s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests | 166m 21s | Tests passed in hadoop-hdfs. |
| | | 210m 39s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12644086/HDFS-6363.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / a319771 |
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/10727/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/10727/artifact/patchprocess/whitespace.txt
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/10727/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/10727/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.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/10727/console |


This message was automatically generated.

> Improve concurrency while checking inclusion and exclusion of datanodes
> -----------------------------------------------------------------------
>
>                 Key: HDFS-6363
>                 URL: https://issues.apache.org/jira/browse/HDFS-6363
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HDFS-6363.patch
>
>
> HostFileManager holds two effectively immutable objects - includes and excludes. These
two objects can be safely published together using a volatile container instead of synchronizing
for all mutators and accessors.
> This improves the concurrency while using HostFileManager.



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