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https://issues.apache.org/jira/browse/HDFS-10674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15453591#comment-15453591
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Zhe Zhang commented on HDFS-10674:
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I just committed to branch-2.8 and branch-2.7. Thanks Daryn for sharing the
patch and Kihwal for the initial commit.
> Optimize creating a full path from an inode
> -------------------------------------------
>
> Key: HDFS-10674
> URL: https://issues.apache.org/jira/browse/HDFS-10674
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.8.0, 2.9.0, 2.7.4, 3.0.0-alpha1
>
> Attachments: HDFS-10674.patch
>
>
> {{INode#getFullPathName}} walks up the inode tree, creates a INode[],
> converts each component byte[] name to a String while building the path.
> This involves many allocations, copies, and char conversions.
> The path should be built with a single byte[] allocation.
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