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https://issues.apache.org/jira/browse/HDFS-10980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15556402#comment-15556402
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Kihwal Lee commented on HDFS-10980:
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+1 looks simple and straightforward.
> Optimize check for existence of parent directory
> ------------------------------------------------
>
> Key: HDFS-10980
> URL: https://issues.apache.org/jira/browse/HDFS-10980
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Attachments: HDFS-10980.patch
>
>
> {{FSDirectory.verifyParentDir()}} uses a {{Path}} object to parse and return
> the parent path. This is very expensive compared to using the path within
> the IIP.
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