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https://issues.apache.org/jira/browse/HADOOP-16804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-16804.
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Resolution: Not A Problem
AWS S3 is now consistent. No more 404 caching.
> s3a mkdir path/ can add 404 to S3 load balancers
> ------------------------------------------------
>
> Key: HADOOP-16804
> URL: https://issues.apache.org/jira/browse/HADOOP-16804
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.3.0
> Reporter: Steve Loughran
> Priority: Major
>
> Not seen in the wild, but inferred from a code review
> mkdirs creates an empty dir marker -but it looks for one first
> proposed
> * only look for file marker and LIST; don't worry about an empty dir marker
> * always PUT one there
> Saves a HEAD on every mkdir too
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