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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1079) HDFS implementation should throw exceptions defined in AbstractFileSystem
Date Thu, 29 Apr 2010 15:58:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12862237#action_12862237
] 

Sanjay Radia commented on HDFS-1079:
------------------------------------

* dfsclient:
The methods should declare only IOException - the actual exceptions are declared in Client-protocol;
this will make it easier to keep the exception declarations uptodate.


* FSDirectory - out of sync with trunk
** Declare more concrete exceptions beyond IOExceptions
*** renameTo -
*** unprotectedRenameTo
*** getPreferredBlockSize 
*** addSymlink
* FSNamesystem
** Remove IO exception declaration - not thrown
*** unprotectedConcat 
*** getBlocklocations* 
*** createLocatedBlock 
*** concat
*** setTimes
** Throw more detailed exception
*** startFile* 
*** appendFile i
*** delete* 


* File Jira to cleanup  IOException  - a better exception can be thrown
** removeBlock, removeLastBlock
** getCurrentUser
** plus a few others.

> HDFS implementation should throw exceptions defined in AbstractFileSystem
> -------------------------------------------------------------------------
>
>                 Key: HDFS-1079
>                 URL: https://issues.apache.org/jira/browse/HDFS-1079
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1079.patch, HDFS-1079.patch
>
>
> HDFS implementation Hdfs.java should throw exceptions as defined in AbstractFileSystem.
To facilitate this, ClientProtocol should be changed to throw specific exceptions, as defined
in AbstractFileSystem.

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