[jira] [Commented] (HADOOP-19627) S3A: testIfMatchOverwriteWithOutdatedEtag() fails when not using SSE-KMS

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-19627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18008775#comment-18008775 ] 

ASF GitHub Bot commented on HADOOP-19627:
-----------------------------------------

steveloughran commented on PR #7816:
URL: https://github.com/apache/hadoop/pull/7816#issuecomment-3097886698

   approved, do use that updated title though; backport as required.




> S3A: testIfMatchOverwriteWithOutdatedEtag() fails when not using SSE-KMS
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-19627
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19627
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.5.0, 3.4.2
>            Reporter: Ahmar Suhail
>            Priority: Major
>              Labels: pull-request-available
>
> ITestS3APutIfMatchAndIfNoneMatch.testIfMatchOverwriteWithOutdatedEtag() fails when no encryption method is set. 
>  
> This is because it does  
> createFileWithFlags(fs, path, SMALL_FILE_BYTES, true, null);
>  
> and then to overwrite the file, also does
>  
> createFileWithFlags(fs, path, SMALL_FILE_BYTES, true, null);
>  
> When no encryption is used, the eTAG is the md5 of the object, and so will always be the same, and won't result in the 412 conditional write failure. 
>  
> Test passes when using SSE-KMS, as when using encryption, eTag is no longer the md5 of the object content, and changes on every write. 
>  
>  
> Fix is simple enough, change the object content on the second write. 



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