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https://issues.apache.org/jira/browse/HADOOP-19256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921464#comment-17921464
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ASF GitHub Bot commented on HADOOP-19256:
-----------------------------------------

hadoop-yetus commented on PR #7329:
URL: https://github.com/apache/hadoop/pull/7329#issuecomment-2616407569

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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|
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   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
include 3 new or modified test files.  |
   |||| _ HADOOP-19256-s3-conditional-writes Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  39m 52s |  |  
HADOOP-19256-s3-conditional-writes passed  |
   | +1 :green_heart: |  compile  |   0m 44s |  |  
HADOOP-19256-s3-conditional-writes passed with JDK 
Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04  |
   | +1 :green_heart: |  compile  |   0m 35s |  |  
HADOOP-19256-s3-conditional-writes passed with JDK Private 
Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga  |
   | +1 :green_heart: |  checkstyle  |   0m 32s |  |  
HADOOP-19256-s3-conditional-writes passed  |
   | +1 :green_heart: |  mvnsite  |   0m 41s |  |  
HADOOP-19256-s3-conditional-writes passed  |
   | +1 :green_heart: |  javadoc  |   0m 41s |  |  
HADOOP-19256-s3-conditional-writes passed with JDK 
Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04  |
   | +1 :green_heart: |  javadoc  |   0m 33s |  |  
HADOOP-19256-s3-conditional-writes passed with JDK Private 
Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga  |
   | +1 :green_heart: |  spotbugs  |   1m  8s |  |  
HADOOP-19256-s3-conditional-writes passed  |
   | +1 :green_heart: |  shadedclient  |  38m 52s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 29s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 37s |  |  the patch passed with JDK 
Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04  |
   | +1 :green_heart: |  javac  |   0m 37s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 26s |  |  the patch passed with JDK 
Private Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga  |
   | +1 :green_heart: |  javac  |   0m 26s |  |  the patch passed  |
   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks 
issues.  |
   | -0 :warning: |  checkstyle  |   0m 21s | 
[/results-checkstyle-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/artifact/out/results-checkstyle-hadoop-tools_hadoop-aws.txt)
 |  hadoop-tools/hadoop-aws: The patch generated 70 new + 5 unchanged - 0 fixed 
= 75 total (was 5)  |
   | +1 :green_heart: |  mvnsite  |   0m 34s |  |  the patch passed  |
   | -1 :x: |  javadoc  |   0m 29s | 
[/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/artifact/out/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt)
 |  hadoop-tools_hadoop-aws-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04 with 
JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04 generated 1 new + 0 unchanged - 
0 fixed = 1 total (was 0)  |
   | -1 :x: |  javadoc  |   0m 25s | 
[/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/artifact/out/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga.txt)
 |  
hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga
 with JDK Private Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga generated 1 
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   | +1 :green_heart: |  spotbugs  |   1m  6s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  37m 38s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |   2m 44s |  |  hadoop-aws in the patch passed. 
 |
   | +1 :green_heart: |  asflicense  |   0m 36s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 131m 25s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.47 ServerAPI=1.47 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/7329 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | Linux 88b6aaed7d3f 5.15.0-125-generic #135-Ubuntu SMP Fri Sep 27 
13:53:58 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | HADOOP-19256-s3-conditional-writes / 
aa1defccf49717b7be391ebde37d0346fd8bb921 |
   | Default Java | Private Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga |
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/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04 
/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_432-8u432-ga~us1-0ubuntu2~20.04-ga |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/testReport/ |
   | Max. process+thread count | 641 (vs. ulimit of 5500) |
   | modules | C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7329/2/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.
   
   




> S3A: Support S3 Conditional Writes
> ----------------------------------
>
>                 Key: HADOOP-19256
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19256
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Ahmar Suhail
>            Priority: Major
>              Labels: pull-request-available
>
> S3 Conditional Write (Put-if-absent) capability is now generally available - 
> [https://aws.amazon.com/about-aws/whats-new/2024/08/amazon-s3-conditional-writes/]
>  
> S3A should allow passing in this put-if-absent header to prevent over writing 
> of files. 
> There is a feature branch for this: HADOOP-19256-s3-conditional-writes
> + support etags to allow an overwrite to be restricted to overwriting a 
> specific version. This can be done through a createFile option.
> https://docs.aws.amazon.com/AmazonS3/latest/userguide/conditional-writes.html
> Fun fact; third party stores will not reject overwrites if they don't 
> recognise the headers, so there's no way to be sure they are supported 
> without testing.
> we need a flag to enable/disable conditional writes which can be exposed in a 
> hasPathCapability()



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