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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-7070) Batch calls to RackResolver from AM
Date Fri, 30 Mar 2018 10:24:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16420354#comment-16420354
] 

Hadoop QA commented on MAPREDUCE-7070:
--------------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  2m 52s{color} | {color:blue}
Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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:brown} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 54s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m  2s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 27m 14s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 55s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 20s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 13m 37s{color}
| {color:green} branch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 10s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  3s{color} |
{color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 19s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m  8s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 27m 32s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 27m 32s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  2m 47s{color}
| {color:orange} root: The patch generated 2 new + 302 unchanged - 0 fixed = 304 total (was
302) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 16s{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} shadedclient {color} | {color:green}  9m  0s{color}
| {color:green} patch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 25s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  6s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 18s{color} | {color:green}
hadoop-yarn-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 50s{color} | {color:green}
hadoop-mapreduce-client-app in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 36s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}132m 38s{color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8620d2b |
| JIRA Issue | MAPREDUCE-7070 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12916986/MAPREDUCE-7070.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  shadedclient
 findbugs  checkstyle  |
| uname | Linux 4bf4f5ac9fb3 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 2216bde |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| checkstyle | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7376/artifact/out/diff-checkstyle-root.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7376/testReport/
|
| Max. process+thread count | 594 (vs. ulimit of 10000) |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
U: . |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7376/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Batch calls to RackResolver from AM
> -----------------------------------
>
>                 Key: MAPREDUCE-7070
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7070
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: applicationmaster, performance
>            Reporter: Greg Phillips
>            Priority: Minor
>         Attachments: MAPREDUCE-7070.patch
>
>
> TaskAttemptImpl calls RackResolver once for every split location. This results in many
shells being spawned by the Application Master when the topology script is enabled. The worst
case scenario would entail one call to the topology script for each Datanode. The NameNode
is also topology aware, and uses batch calls to the topology script to improve performance.



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