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https://issues.apache.org/jira/browse/HADOOP-13164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HADOOP-13164:
---------------------------------
    Fix Version/s: 3.0.0-alpha2

> Optimize S3AFileSystem::deleteUnnecessaryFakeDirectories
> --------------------------------------------------------
>
>                 Key: HADOOP-13164
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13164
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Minor
>             Fix For: 2.9.0, 3.0.0-alpha2
>
>         Attachments: HADOOP-13164-branch-005.patch, 
> HADOOP-13164-branch-2-003.patch, HADOOP-13164-branch-2-004.patch, 
> HADOOP-13164.branch-2-002.patch, HADOOP-13164.branch-2.WIP.002.patch, 
> HADOOP-13164.branch-2.WIP.patch
>
>
> https://github.com/apache/hadoop/blob/27c4e90efce04e1b1302f668b5eb22412e00d033/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java#L1224
> deleteUnnecessaryFakeDirectories is invoked in S3AFileSystem during rename 
> and on outputstream close() to purge any fake directories. Depending on the 
> nesting in the folder structure, it might take a lot longer time as it 
> invokes getFileStatus multiple times.  Instead, it should be able to break 
> out of the loop once a non-empty directory is encountered. 



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