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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13169) Randomize file list in SimpleCopyListing
Date Wed, 18 May 2016 09:07:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15288659#comment-15288659
] 

Hadoop QA commented on HADOOP-13169:
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| (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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s {color} | {color:red}
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} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red} 0m 44s {color} | {color:red}
root in branch-2 failed. {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 24s {color} |
{color:green} branch-2 passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 15s {color} |
{color:green} branch-2 passed with JDK v1.7.0_101 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 12s {color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 20s {color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 39s {color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 27s {color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 9s {color} | {color:green}
branch-2 passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 12s {color} |
{color:green} branch-2 passed with JDK v1.7.0_101 {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red} 0m 18s {color} | {color:red}
hadoop-distcp in the patch failed. {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 12s {color} |
{color:green} the patch passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 12s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 14s {color} |
{color:green} the patch passed with JDK v1.7.0_101 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 14s {color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 12s {color} | {color:red}
hadoop-tools/hadoop-distcp: The patch generated 2 new + 18 unchanged - 0 fixed = 20 total
(was 18) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 20s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 10s {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} 0m 37s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 10s {color} |
{color:green} the patch passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 13s {color} |
{color:green} the patch passed with JDK v1.7.0_101 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 8m 29s {color} | {color:green}
hadoop-distcp in the patch passed with JDK v1.8.0_91. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 7m 28s {color} | {color:green}
hadoop-distcp in the patch passed with JDK v1.7.0_101. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 17s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 23m 8s {color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:babe025 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12804597/HADOOP-13169-branch-2-002.patch
|
| JIRA Issue | HADOOP-13169 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux f3d0f59903a2 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 |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | branch-2 / e205421 |
| Default Java | 1.7.0_101 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_91 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_101
|
| mvninstall | https://builds.apache.org/job/PreCommit-HADOOP-Build/9483/artifact/patchprocess/branch-mvninstall-root.txt
|
| findbugs | v3.0.0 |
| mvninstall | https://builds.apache.org/job/PreCommit-HADOOP-Build/9483/artifact/patchprocess/patch-mvninstall-hadoop-tools_hadoop-distcp.txt
|
| checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/9483/artifact/patchprocess/diff-checkstyle-hadoop-tools_hadoop-distcp.txt
|
| JDK v1.7.0_101  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/9483/testReport/
|
| modules | C: hadoop-tools/hadoop-distcp U: hadoop-tools/hadoop-distcp |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/9483/console |
| Powered by | Apache Yetus 0.3.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Randomize file list in SimpleCopyListing
> ----------------------------------------
>
>                 Key: HADOOP-13169
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13169
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: tools/distcp
>            Reporter: Rajesh Balamohan
>            Priority: Minor
>         Attachments: HADOOP-13169-branch-2-001.patch, HADOOP-13169-branch-2-002.patch
>
>
> When copying files to S3, based on file listing some mappers can get into S3 partition
hotspots. This would be more visible, when data is copied from hive warehouse with lots of
partitions (e.g date partitions). In such cases, some of the tasks would tend to be a lot
more slower than others. It would be good to randomize the file paths which are written out
in SimpleCopyListing to avoid this issue.



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