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https://issues.apache.org/jira/browse/HBASE-20332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16508629#comment-16508629
 ] 

Hadoop QA commented on HBASE-20332:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
14s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} shelldocs {color} | {color:blue}  0m  
0s{color} | {color:blue} Shelldocs was not available. {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 2 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
28s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
 8s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 
35s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
59s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  6m 
53s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
12s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
41s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m  
5s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  7m  
5s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} shellcheck {color} | {color:green}  0m 
 1s{color} | {color:green} There were no new shellcheck issues. {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} xml {color} | {color:green}  0m 
26s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  3m 
53s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}  
9m 59s{color} | {color:green} Patch does not cause any errors with Hadoop 2.7.4 
or 3.0.0. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  7m 
16s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}183m 
54s{color} | {color:green} root in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  8m 
28s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}253m 29s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-20332 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12927319/HBASE-20332.4.patch |
| Optional Tests |  asflicense  javac  javadoc  unit  shadedjars  hadoopcheck  
xml  compile  shellcheck  shelldocs  |
| uname | Linux 81436e2f74de 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9 
14:43:09 UTC 2018 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | master / eb13cdd7ed |
| maven | version: Apache Maven 3.5.3 
(3383c37e1f9e9b3bc3df5050c29c8aff9f295297; 2018-02-24T19:49:05Z) |
| Default Java | 1.8.0_171 |
| shellcheck | v0.4.4 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13194/testReport/ |
| Max. process+thread count | 4557 (vs. ulimit of 10000) |
| modules | C: hbase-checkstyle hbase-common hbase-hadoop2-compat hbase-client 
hbase-replication hbase-server hbase-mapreduce hbase-testing-util hbase-thrift 
hbase-rsgroup hbase-shell hbase-endpoint hbase-backup hbase-it hbase-rest 
hbase-examples hbase-external-blockcache hbase-shaded 
hbase-shaded/hbase-shaded-mapreduce hbase-shaded/hbase-shaded-check-invariants 
hbase-shaded/hbase-shaded-with-hadoop-check-invariants . U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13194/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> shaded mapreduce module shouldn't include hadoop
> ------------------------------------------------
>
>                 Key: HBASE-20332
>                 URL: https://issues.apache.org/jira/browse/HBASE-20332
>             Project: HBase
>          Issue Type: Sub-task
>          Components: mapreduce, shading
>    Affects Versions: 2.0.0
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>            Priority: Critical
>             Fix For: 3.0.0, 2.1.0
>
>         Attachments: HBASE-20332.0.patch, HBASE-20332.1.WIP.patch, 
> HBASE-20332.2.WIP.patch, HBASE-20332.3.patch, HBASE-20332.4.patch
>
>
> AFAICT, we should just entirely skip including hadoop in our shaded mapreduce 
> module
> 1) Folks expect to run yarn / mr apps via {{hadoop jar}} / {{yarn jar}}
> 2) those commands include all the needed Hadoop jars in your classpath by 
> default (both client side and in the containers)
> 3) If you try to use "user classpath first" for your job as a workaround 
> (e.g. for some library your application needs that hadoop provides) then our 
> inclusion of *some but not all* hadoop classes then causes everything to fall 
> over because of mixing rewritten and non-rewritten hadoop classes
> 4) if you don't use "user classpath first" then all of our 
> non-relocated-but-still-shaded hadoop classes are ignored anyways so we're 
> just wasting space



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