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https://issues.apache.org/jira/browse/HADOOP-18748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17725020#comment-17725020
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ASF GitHub Bot commented on HADOOP-18748:
-----------------------------------------

hadoop-yetus commented on PR #5685:
URL: https://github.com/apache/hadoop/pull/5685#issuecomment-1557525853

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  0s |  |  No case conflicting files 
found.  |
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|
   | +1 :green_heart: |  @author  |   0m  0s |  |  The patch does not contain 
any @author tags.  |
   | -1 :x: |  test4tests  |   0m  0s |  |  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.  
|
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  35m  2s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |  16m 38s |  |  trunk passed with JDK 
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1  |
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Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09  |
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Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1  |
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Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09  |
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when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 52s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  16m 12s |  |  the patch passed with JDK 
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1  |
   | +1 :green_heart: |  javac  |  16m 12s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  15m 33s |  |  the patch passed with JDK 
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09  |
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   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks 
issues.  |
   | -0 :warning: |  checkstyle  |   1m  2s | 
[/results-checkstyle-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5685/2/artifact/out/results-checkstyle-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common-project/hadoop-common: The patch generated 3 new + 108 
unchanged - 0 fixed = 111 total (was 108)  |
   | +1 :green_heart: |  mvnsite  |   1m 40s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   1m 11s |  |  the patch passed with JDK 
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1  |
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Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09  |
   | -1 :x: |  spotbugs  |   2m 45s | 
[/new-spotbugs-hadoop-common-project_hadoop-common.html](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5685/2/artifact/out/new-spotbugs-hadoop-common-project_hadoop-common.html)
 |  hadoop-common-project/hadoop-common generated 1 new + 0 unchanged - 0 fixed 
= 1 total (was 0)  |
   | +1 :green_heart: |  shadedclient  |  22m 27s |  |  patch has no errors 
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   |||| _ Other Tests _ |
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passed.  |
   | +1 :green_heart: |  asflicense  |   1m  0s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 181m 19s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | SpotBugs | module:hadoop-common-project/hadoop-common |
   |  |  Inconsistent synchronization of 
org.apache.hadoop.conf.Configuration.overlay; locked 75% of time  
Unsynchronized access at Configuration.java:75% of time  Unsynchronized access 
at Configuration.java:[line 745] |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.43 ServerAPI=1.43 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5685/2/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/5685 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
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/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5685/2/testReport/ |
   | Max. process+thread count | 1263 (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-5685/2/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> Configuration.get is slow
> -------------------------
>
>                 Key: HADOOP-18748
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18748
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>            Reporter: Alkis Evlogimenos
>            Priority: Major
>              Labels: pull-request-available
>
> `Configuration.get` is slow mainly because of the overhead of 
> `handleDeprecation` and eager creation of `overlay` even when null.



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