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https://issues.apache.org/jira/browse/YARN-9817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924524#comment-16924524
 ] 

Hadoop QA commented on YARN-9817:
---------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
37s{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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 3 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 18m 
37s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
27s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
22s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
31s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
12m 26s{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}  0m 
44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
23s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
26s{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} 
12m 56s{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}  0m 
49s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  9m 
48s{color} | {color:green} hadoop-mapreduce-client-app in the patch passed. 
{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} 60m 25s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.2 Server=19.03.2 Image:yetus/hadoop:bdbca0e53b4 |
| JIRA Issue | YARN-9817 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12979699/YARN-9817-001.patch |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux bac5ea5897fb 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 
11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / b71a7f1 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_222 |
| findbugs | v3.1.0-RC1 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/24755/testReport/ |
| Max. process+thread count | 568 (vs. ulimit of 5500) |
| modules | C: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/24755/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Fix failing testcases due to not initialized AsyncDispatcher -  
> ArithmeticException: / by zero
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-9817
>                 URL: https://issues.apache.org/jira/browse/YARN-9817
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 3.3.0, 3.2.1, 3.1.3
>            Reporter: Prabhu Joseph
>            Assignee: Prabhu Joseph
>            Priority: Major
>         Attachments: YARN-9817-001.patch
>
>
> Below testcases failing as Asyncdispatcher throws ArithmeticException: / by 
> zero
> {code}
>  hadoop.mapreduce.v2.app.TestRuntimeEstimators 
>  hadoop.mapreduce.v2.app.job.impl.TestJobImpl 
>  hadoop.mapreduce.v2.app.TestMRApp 
> {code}
> Error Message:
> {code}
> [ERROR] testUpdatedNodes(org.apache.hadoop.mapreduce.v2.app.TestMRApp)  Time 
> elapsed: 0.847 s  <<< ERROR!
> java.lang.ArithmeticException: / by zero
>       at 
> org.apache.hadoop.yarn.event.AsyncDispatcher$GenericEventHandler.handle(AsyncDispatcher.java:295)
>       at 
> org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:1015)
>       at 
> org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:141)
>       at 
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobEventDispatcher.handle(MRAppMaster.java:1544)
>       at 
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceStart(MRAppMaster.java:1263)
>       at 
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
>       at org.apache.hadoop.mapreduce.v2.app.MRApp.submit(MRApp.java:301)
>       at org.apache.hadoop.mapreduce.v2.app.MRApp.submit(MRApp.java:285)
>       at 
> org.apache.hadoop.mapreduce.v2.app.TestMRApp.testUpdatedNodes(TestMRApp.java:223)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
> {code}
> This happens when AsyncDispatcher is not initialized in the testcases and so 
> detailsInterval is taken as 0.



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