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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7508) Clean up path resolving in FSNamesystem/FSDirectory
Date Fri, 06 Jan 2017 22:04:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Junping Du updated HDFS-7508:
    Target Version/s:   (was: 2.8.0)

> Clean up path resolving in FSNamesystem/FSDirectory
> ---------------------------------------------------
>                 Key: HDFS-7508
>                 URL: https://issues.apache.org/jira/browse/HDFS-7508
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
> There are several issues with our current path resolving process:
> # For a single operation we may repeat resolving the same path
> # Each operation needs to invoke multiple calls for path resolving, including handling
reserved path, breaking the path into components, identifying corresponding inodes etc. This
makes the path resolving process hard to follow.
> # The logic in INodesInPath is complicated and not direct.
> Ideally for each operation we should only resolve the path once in the beginning, and
always use the INodesInPath instance afterwards. This requires a lot of code cleanup. We will
use this jira as the umbrella jira to track all the efforts.

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