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https://issues.apache.org/jira/browse/HADOOP-19072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17817866#comment-17817866
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ASF GitHub Bot commented on HADOOP-19072:
-----------------------------------------
virajjasani commented on code in PR #6543:
URL: https://github.com/apache/hadoop/pull/6543#discussion_r1492090102
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/MkdirOperation.java:
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@@ -124,7 +132,32 @@ public Boolean execute() throws IOException {
return true;
}
- // Walk path to root, ensuring closest ancestor is a directory, not file
+ // if performance creation mode is set, no need to check
Review Comment:
Sounds reasonable, i was curious about whether we need full probe for magic,
i think yes we can make it much performant.
> S3A: expand optimisations on stores with "fs.s3a.create.performance"
> --------------------------------------------------------------------
>
> Key: HADOOP-19072
> URL: https://issues.apache.org/jira/browse/HADOOP-19072
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
>
> on an s3a store with fs.s3a.create.performance set, speed up other operations
> * mkdir to skip parent directory check: just do a HEAD to see if there's a
> file at the target location
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