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https://issues.apache.org/jira/browse/HADOOP-19134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17840554#comment-17840554
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ASF GitHub Bot commented on HADOOP-19134:
-----------------------------------------

hadoop-yetus commented on PR #6692:
URL: https://github.com/apache/hadoop/pull/6692#issuecomment-2075737382

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m 22s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  spotbugs  |   0m 01s |  |  spotbugs executables are not 
available.  |
   | +0 :ok: |  codespell  |   0m 01s |  |  codespell was not available.  |
   | +0 :ok: |  detsecrets  |   0m 01s |  |  detect-secrets was not available.  
|
   | +1 :green_heart: |  @author  |   0m 00s |  |  The patch does not contain 
any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m 00s |  |  The patch appears to 
include 55 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +0 :ok: |  mvndep  |   3m 06s |  |  Maven dependency ordering for branch  |
   | +1 :green_heart: |  mvninstall  | 108m 51s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |  47m 49s |  |  trunk passed  |
   | +1 :green_heart: |  checkstyle  |   7m 17s |  |  trunk passed  |
   | -1 :x: |  mvnsite  |   5m 17s | 
[/branch-mvnsite-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/branch-mvnsite-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common in trunk failed.  |
   | +1 :green_heart: |  javadoc  |  95m 17s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  | 373m 49s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +0 :ok: |  mvndep  |   2m 48s |  |  Maven dependency ordering for patch  |
   | -1 :x: |  mvninstall  |   3m 14s | 
[/patch-mvninstall-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/patch-mvninstall-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt)
 |  hadoop-yarn-common in the patch failed.  |
   | -1 :x: |  compile  |  29m 37s | 
[/patch-compile-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/patch-compile-root.txt)
 |  root in the patch failed.  |
   | -1 :x: |  javac  |  29m 37s | 
[/patch-compile-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/patch-compile-root.txt)
 |  root in the patch failed.  |
   | +1 :green_heart: |  blanks  |   0m 01s |  |  The patch has no blanks 
issues.  |
   | +1 :green_heart: |  checkstyle  |   6m 06s |  |  the patch passed  |
   | -1 :x: |  mvnsite  |   4m 06s | 
[/patch-mvnsite-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/patch-mvnsite-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common in the patch failed.  |
   | -1 :x: |  mvnsite  |   4m 28s | 
[/patch-mvnsite-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/artifact/out/patch-mvnsite-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt)
 |  hadoop-yarn-common in the patch failed.  |
   | +1 :green_heart: |  javadoc  |  74m 51s |  |  the patch passed  |
   | -1 :x: |  shadedclient  | 220m 04s |  |  patch has errors when building 
and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  asflicense  |   5m 14s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 872m 01s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | GITHUB PR | https://github.com/apache/hadoop/pull/6692 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | MINGW64_NT-10.0-17763 15c8e8eb8429 3.4.10-87d57229.x86_64 
2024-02-14 20:17 UTC x86_64 Msys |
   | Build tool | maven |
   | Personality | /c/hadoop/dev-support/bin/hadoop.sh |
   | git revision | trunk / 45ab789535db417d71f833a5655fb49e1e4086f3 |
   | Default Java | Azul Systems, Inc.-1.8.0_332-b09 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/testReport/
 |
   | modules | C: hadoop-common-project/hadoop-common 
hadoop-common-project/hadoop-kms hadoop-hdfs-project/hadoop-hdfs 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router 
hadoop-mapreduce-project/hadoop-mapreduce-examples 
hadoop-tools/hadoop-streaming U: . |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6692/1/console
 |
   | versions | git=2.44.0.windows.1 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> use StringBuilder instead of StringBuffer
> -----------------------------------------
>
>                 Key: HADOOP-19134
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19134
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: PJ Fanning
>            Priority: Major
>              Labels: pull-request-available
>
> StringBuilder is basically the same as StringBuffer but doesn't use 
> synchronized. String appending rarely needs locking like this.
> There are some public and package private APIs that use StringBuffers as 
> input or return types - I have left these alone for compatibility reasons.



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