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https://issues.apache.org/jira/browse/HDFS-6515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15806329#comment-15806329
 ] 

Hadoop QA commented on HDFS-6515:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
12s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
15s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 12m 
59s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 10m 
10s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
33s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m  
5s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
33s{color} | {color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
16s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
28s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  9m 
42s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  9m 
42s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m  
0s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 
17s{color} | {color:green} hadoop-common in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 67m 53s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
35s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}131m 28s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| Timed out junit tests | 
org.apache.hadoop.hdfs.server.blockmanagement.TestBlockStatsMXBean |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:a9ad5d6 |
| JIRA Issue | HDFS-6515 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12677586/HDFS-6515-2.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 286e68157eeb 3.13.0-103-generic #150-Ubuntu SMP Thu Nov 24 
10:34:17 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 71a4acf |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/18086/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/18086/testReport/ |
| modules | C: hadoop-common-project/hadoop-common 
hadoop-hdfs-project/hadoop-hdfs U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/18086/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> testPageRounder   (org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache)
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-6515
>                 URL: https://issues.apache.org/jira/browse/HDFS-6515
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.4.0, 2.4.1, 3.0.0-alpha1
>         Environment: Linux on PPC64
> Tested with Hadoop 3.0.0 SNAPSHOT, on RHEL 6.5, on Ubuntu 14.04, on Fedora 
> 19, using mvn -Dtest=TestFsDatasetCache#testPageRounder -X test
>            Reporter: Tony Reix
>              Labels: BB2015-05-TBR, hadoop, test
>         Attachments: HDFS-6515-1.patch, HDFS-6515-2.patch
>
>
> I have an issue with test :
>    testPageRounder
>   (org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache)
> on Linux/PowerPC.
> On Linux/Intel, test runs fine.
> On Linux/PowerPC, I have:
> testPageRounder(org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache)  
> Time elapsed: 64.037 sec  <<< ERROR!
> java.lang.Exception: test timed out after 60000 milliseconds
> Looking at details, I see that some "Failed to cache " messages appear in the 
> traces. Only 10 on Intel, but 186 on PPC64.
> On PPC64, it looks like some thread is waiting for something that never 
> happens, generating a TimeOut.
> I'm now using IBM JVM, however I've just checked that the issue also appears 
> with OpenJDK.
> I'm now using Hadoop latest, however, the issue appeared within Hadoop 2.4.0 .
> I need help for understanding what the test is doing, what traces are 
> expected, in order to understand what/where is the root cause.



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