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https://issues.apache.org/jira/browse/HADOOP-19134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17874612#comment-17874612
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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-2295131875

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6692/7/artifact/out/Dockerfile
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   | GITHUB PR | https://github.com/apache/hadoop/pull/6692 |
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   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6692/7/testReport/ |
   | Max. process+thread count | 4468 (vs. ulimit of 5500) |
   | 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 
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hadoop-tools/hadoop-streaming hadoop-tools/hadoop-rumen 
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6692/7/console |
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   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
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> 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
>            Assignee: 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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