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https://issues.apache.org/jira/browse/HADOOP-19256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17883980#comment-17883980
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ASF GitHub Bot commented on HADOOP-19256:
-----------------------------------------
steveloughran commented on code in PR #7011:
URL: https://github.com/apache/hadoop/pull/7011#discussion_r1771774375
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java:
##########
@@ -1390,6 +1390,13 @@ private Constants() {
*/
public static final String FS_S3A_CREATE_PERFORMANCE =
"fs.s3a.create.performance";
+ /**
+ * Flag for commit if none match.
+ * This can be set in the {code createFile()} builder.
+ * Value {@value}.
+ */
+ public static final String FS_S3A_CREATE_IF_NONE_MATCH =
"fs.s3a.create.header.If-None-Match";
Review Comment:
I'm going to propose
```
fs.s3a.conditional.file.create
```
this is to
* allow it to be set in a hadoop/spark configuration
* line up for `fs.s3a.conditional.file.rename`
* hide the actual implementation details.
Please change the option and field names.
> 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.
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