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https://issues.apache.org/jira/browse/HDFS-8520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14579227#comment-14579227
 ] 

Hadoop QA commented on HDFS-8520:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch |  17m  8s | Findbugs (version ) appears to 
be broken on trunk. |
| {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 41s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 54s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   1m 57s | There were no new checkstyle 
issues. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 39s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | 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} | common tests |  23m 24s | Tests passed in 
hadoop-common. |
| {color:red}-1{color} | hdfs tests | 162m 11s | Tests failed in hadoop-hdfs. |
| | | 230m  3s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.namenode.TestClusterId |
|   | hadoop.hdfs.server.namenode.TestFileTruncate |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12738583/HDFS-8520-2.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 8d0ef31 |
| hadoop-common test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11291/artifact/patchprocess/testrun_hadoop-common.txt
 |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11291/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11291/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/11291/console |


This message was automatically generated.

> Patch for PPC64 block size
> --------------------------
>
>                 Key: HDFS-8520
>                 URL: https://issues.apache.org/jira/browse/HDFS-8520
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>         Environment: RHEL 7.1 /PPC64
>            Reporter: Tony Reix
>            Assignee: Tony Reix
>             Fix For: 2.7.1
>
>         Attachments: HDFS-8520-2.patch, HDFS-8520.patch
>
>
> The attached patch enables Hadoop to work on PPC64.
> That deals with SystemPageSize and BloclSize , which are not 4096 on PPC64.
> There are changes in 3 files:
> - 
> hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIO.java
> - 
> hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestFsDatasetCache.java
> - 
> hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCacheDirectives.java
> where 4096 is replaced by getOperatingSystemPageSize() or by using PAGE_SIZE
> The patch has been built on branch-2.7 .



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