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https://issues.apache.org/jira/browse/HADOOP-9570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16861341#comment-16861341
 ] 

Hadoop QA commented on HADOOP-9570:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 18m 
46s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Findbugs executables are 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: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} branch-2.8 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 12m 
27s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m 
12s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
24s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
6s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
57s{color} | {color:green} branch-2.8 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m  
0s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  8m  
0s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 21s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch 
generated 1 new + 159 unchanged - 0 fixed = 160 total (was 159) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
6s{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} javadoc {color} | {color:green}  0m 
58s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  9m 52s{color} 
| {color:red} hadoop-common in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 
27s{color} | {color:red} The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 64m 25s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.util.TestDiskCheckerWithDiskIo |
|   | hadoop.conf.TestConfigurationSubclass |
|   | hadoop.util.curator.TestChildReaper |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:ca68fb3 |
| JIRA Issue | HADOOP-9570 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12971495/HADOOP-9570.branch-2.8.001.patch
 |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 4fb9cf482343 4.4.0-141-generic #167~14.04.1-Ubuntu SMP Mon Dec 
10 13:20:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-2.8 / 8756254 |
| maven | version: Apache Maven 3.0.5 |
| Default Java | 1.7.0_201 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16315/artifact/out/diff-checkstyle-hadoop-common-project_hadoop-common.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16315/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16315/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16315/artifact/out/patch-asflicense-problems.txt
 |
| Max. process+thread count | 1463 (vs. ulimit of 10000) |
| modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16315/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Configuration.addResource() should only parse the new resource
> --------------------------------------------------------------
>
>                 Key: HADOOP-9570
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9570
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>         Environment: Ubuntu LXC
>            Reporter: Gopal V
>            Assignee: Daryn Sharp
>            Priority: Minor
>         Attachments: HADOOP-9570.branch-2.8.001.patch, 
> HADOOP-9570.branch-2.8.patch, HADOOP-9750.patch
>
>
> Hadoop configuration parsing re-parses all configuration files when a new 
> resource is added to the configuration object.
> This is wasteful and runs through every deprecation check unnecessarily.
> {code}
> JobConf clone = new JobConf(job);
> clone.addResource(...);
> {code}
> will reparse every file including core-site, hdfs-site etc.
> Resource addition can be taken care of cleanly, if the addResourceObject() 
> call applies the new resource, followed by applying the overlay, without 
> re-parsing any of the older files already loaded into the hashtable.



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