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Posted to hdfs-issues@hadoop.apache.org by "Yiqun Lin (JIRA)" <ji...@apache.org> on 2016/10/04 05:09:21 UTC

[jira] [Updated] (HDFS-10925) Cache symlinkString in INodeSymlink

     [ https://issues.apache.org/jira/browse/HDFS-10925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yiqun Lin updated HDFS-10925:
-----------------------------
    Attachment: HDFS-10925.002.patch

> Cache symlinkString in INodeSymlink
> -----------------------------------
>
>                 Key: HDFS-10925
>                 URL: https://issues.apache.org/jira/browse/HDFS-10925
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>            Priority: Minor
>         Attachments: HDFS-10925.001.patch, HDFS-10925.002.patch
>
>
> In {{INodeSymlink}}'s construct method, it will transfer the input symlink string to a byte array. If we want to invoke {{INodeSymlink#getSymlinkString}}, it will transfer the byte array to the string again. Since we don't cache symlinkString  here, it will do the {{DFSUtil.bytes2String}} method every time. It seems not efficient.



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