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From "Milind Bhandarkar (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-75) dfs should check full file availability only at close
Date Fri, 12 May 2006 22:36:10 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-75?page=all ]

Milind Bhandarkar updated HADOOP-75:
------------------------------------

    Attachment: hadoop-75.patch

Added a patch that removes that check (whether the previous blocks have been replicated or
not) after adding every block to the file in construction. Now it checks that all file blocks
have been replicated only at close of a file.

> dfs should check full file availability only at close
> -----------------------------------------------------
>
>          Key: HADOOP-75
>          URL: http://issues.apache.org/jira/browse/HADOOP-75
>      Project: Hadoop
>         Type: Improvement

>   Components: dfs
>     Versions: 0.2
>     Reporter: Doug Cutting
>     Assignee: Konstantin Shvachko
>     Priority: Minor
>      Fix For: 0.3
>  Attachments: hadoop-75.patch
>
> Currently it appears that dfs checks that the namenode knows about all blocks in a file
as each block is written.  It would be more efficient to only check that all blocks are stored
somewhere when the file is closed.

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