[ 
https://issues.apache.org/jira/browse/HADOOP-13500?focusedWorklogId=693131&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-693131
 ]

ASF GitHub Bot logged work on HADOOP-13500:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Dec/21 10:52
            Start Date: 09/Dec/21 10:52
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on pull request #3775:
URL: https://github.com/apache/hadoop/pull/3775#issuecomment-989738173


   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  1s |  |  No case conflicting files 
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any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
include 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | -1 :x: |  mvninstall  |  32m 55s | 
[/branch-mvninstall-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/artifact/out/branch-mvninstall-root.txt)
 |  root in trunk failed.  |
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Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
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Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
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Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   1m  0s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  22m 29s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javac  |  22m 29s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  20m 21s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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issues.  |
   | -0 :warning: |  checkstyle  |   1m  3s | 
[/results-checkstyle-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/artifact/out/results-checkstyle-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common-project/hadoop-common: The patch generated 2 new + 217 
unchanged - 4 fixed = 219 total (was 221)  |
   | +1 :green_heart: |  mvnsite  |   1m 37s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   1m  4s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 38s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
   | +1 :green_heart: |  spotbugs  |   2m 44s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  23m 54s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | -1 :x: |  unit  |  17m 39s | 
[/patch-unit-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common in the patch passed.  |
   | +1 :green_heart: |  asflicense  |   1m  0s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 201m 53s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.ipc.TestIPC |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/3775 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell |
   | uname | Linux cc2b4759a499 4.15.0-156-generic #163-Ubuntu SMP Thu Aug 19 
23:31:58 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / 04c1d9d2bba363436b0dc7d9cf7731953bddc257 |
   | Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   | Multi-JDK versions | 
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 
/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/testReport/ |
   | Max. process+thread count | 1258 (vs. ulimit of 5500) |
   | modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3775/1/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 693131)
    Time Spent: 40m  (was: 0.5h)

> Concurrency issues when using Configuration iterator
> ----------------------------------------------------
>
>                 Key: HADOOP-13500
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13500
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>            Reporter: Jason Darrell Lowe
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> It is possible to encounter a ConcurrentModificationException while trying to 
> iterate a Configuration object.  The iterator method tries to walk the 
> underlying Property object without proper synchronization, so another thread 
> simultaneously calling the set method can trigger it.



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