hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2566) need FileSystem#globStatus method
Date Sat, 12 Jan 2008 00:59:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558179#action_12558179
] 

Hairong Kuang commented on HADOOP-2566:
---------------------------------------

I am still not comfortable with this change:

1. Some of shell commands like delete, copy, and rename use globPath but don't need FileStatus.
2. GlobPath does not always call listPath for every directory. For example, globPath("/user/*/data")
needs only to listPath("/user"). Returning FileStatus[] requires listPath on each user xx's
home directory /user/xx and /user/xx/data. This is a lot of overhead. 

> need FileSystem#globStatus method
> ---------------------------------
>
>                 Key: HADOOP-2566
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2566
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: fs
>            Reporter: Doug Cutting
>            Assignee: Hairong Kuang
>             Fix For: 0.16.0
>
>
> To remove the cache of FileStatus in DFSPath (HADOOP-2565) without hurting performance,
we must use file enumeration APIs that return FileStatus[] rather than Path[].  Currently
we have FileSystem#globPaths(), but that method should be deprecated and replaced with a FileSystem#globStatus().
> We need to deprecate FileSystem#globPaths() in 0.16 in order to remove the cache in 0.17.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message