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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13208) S3A listFiles(recursive=true) to do a bulk listObjects instead of walking the pseudo-tree of directories
Date Wed, 13 Jul 2016 18:39:21 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15375514#comment-15375514
] 

Hadoop QA commented on HADOOP-13208:
------------------------------------

| (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 24s{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 8 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 14s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 42s{color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m  1s{color} |
{color:green} branch-2 passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 46s{color} |
{color:green} branch-2 passed with JDK v1.7.0_101 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 30s{color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 52s{color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 48s{color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 12s{color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 32s{color} |
{color:green} branch-2 passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 37s{color} |
{color:green} branch-2 passed with JDK v1.7.0_101 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 17s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 22s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 10s{color} |
{color:green} the patch passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  7m 10s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 35s{color} |
{color:green} the patch passed with JDK v1.7.0_101 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  6m 35s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 24s{color}
| {color:green} root: The patch generated 0 new + 58 unchanged - 52 fixed = 58 total (was
110) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 46s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 53s{color}
| {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  0s{color} | {color:red}
The patch has 49 line(s) that end in whitespace. Use git apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 47s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 38s{color} |
{color:green} the patch passed with JDK v1.8.0_91 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 49s{color} |
{color:green} the patch passed with JDK v1.7.0_101 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  8m  6s{color} | {color:red}
hadoop-common in the patch failed with JDK v1.7.0_101. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 19s{color} | {color:green}
hadoop-openstack in the patch passed with JDK v1.7.0_101. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 22s{color} | {color:green}
hadoop-aws in the patch passed with JDK v1.7.0_101. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 28s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}105m 37s{color} | {color:black}
{color} |
\\
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|| Reason || Tests ||
| JDK v1.8.0_91 Failed junit tests | hadoop.security.TestGroupsCaching |
|   | hadoop.metrics2.impl.TestGangliaMetrics |
| JDK v1.7.0_101 Failed junit tests | hadoop.metrics2.impl.TestGangliaMetrics |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:b59b8b7 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12817732/HADOOP-13208-branch-2-012.patch
|
| JIRA Issue | HADOOP-13208 |
| Optional Tests |  asflicense  mvnsite  compile  javac  javadoc  mvninstall  unit  findbugs
 checkstyle  |
| uname | Linux 3cf9ce5ebc45 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 / 694b4ab |
| 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
|
| findbugs | v3.0.0 |
| whitespace | https://builds.apache.org/job/PreCommit-HADOOP-Build/9988/artifact/patchprocess/whitespace-eol.txt
|
| unit | https://builds.apache.org/job/PreCommit-HADOOP-Build/9988/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common-jdk1.7.0_101.txt
|
| JDK v1.7.0_101  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/9988/testReport/
|
| modules | C: hadoop-common-project/hadoop-common hadoop-tools/hadoop-openstack hadoop-tools/hadoop-aws
U: . |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/9988/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> S3A listFiles(recursive=true) to do a bulk listObjects instead of walking the pseudo-tree
of directories
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-13208
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13208
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: HADOOP-13208-branch-2-001.patch, HADOOP-13208-branch-2-007.patch,
HADOOP-13208-branch-2-008.patch, HADOOP-13208-branch-2-009.patch, HADOOP-13208-branch-2-010.patch,
HADOOP-13208-branch-2-011.patch, HADOOP-13208-branch-2-012.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> A major cost in split calculation against object stores turns out be listing the directory
tree itself. That's because against S3, it takes S3A two HEADs and two lists to list the content
of any directory path (2 HEADs + 1 list for getFileStatus(); the next list to query the contents).
> Listing a directory could be improved slightly by combining the final two listings. However,
a listing of a directory tree will still be O(directories). In contrast, a recursive {{listFiles()}}
operation should be implementable by a bulk listing of all descendant paths; one List operation
per thousand descendants. 
> As the result of this call is an iterator, the ongoing listing can be implemented within
the iterator itself



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