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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9371) Define Semantics of FileSystem and FileContext more rigorously
Date Tue, 12 Mar 2013 03:21:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599651#comment-13599651
] 

Arun C Murthy commented on HADOOP-9371:
---------------------------------------

+1 for this effort - thanks for taking this on Steve!
                
> Define Semantics of FileSystem and FileContext more rigorously
> --------------------------------------------------------------
>
>                 Key: HADOOP-9371
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9371
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs
>    Affects Versions: 1.2.0, 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HadoopFilesystemContract.pdf
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> The semantics of {{FileSystem}} and {{FileContext}} are not completely defined in terms
of 
> # core expectations of a filesystem
> # consistency requirements.
> # concurrency requirements.
> # minimum scale limits
> Furthermore, methods are not defined strictly enough in terms of their outcomes and failure
modes.
> The requirements and method semantics should be defined more strictly.

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