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https://issues.apache.org/jira/browse/HADOOP-13308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344017#comment-15344017
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Steve Loughran commented on HADOOP-13308:
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you could actually do the PUT without doing the check, couldn't you?
The biggest problem with having spurious parent dirs is that delete/ itself may
do some checks for empty directories and handle them.
Maybe we need to think about some s3 fsck routine which does cleanup.
> S3A delete and rename may fail to preserve parent directory.
> ------------------------------------------------------------
>
> Key: HADOOP-13308
> URL: https://issues.apache.org/jira/browse/HADOOP-13308
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Chris Nauroth
> Priority: Minor
>
> When a file or directory is deleted or renamed in S3A, and the result of that
> operation makes the parent empty, S3A must store a fake directory (a pure
> metadata object) at the parent to indicate that the directory still exists.
> The logic for restoring fake directories is not resilient to a process death.
> This may cause a directory to vanish unexpectedly after a deletion or rename
> of its last child.
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