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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3938) Quotas for disk space management
Date Wed, 10 Sep 2008 22:00:47 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raghu Angadi updated HADOOP-3938:
---------------------------------

    Attachment: HADOOP-3938.patch

Updated patch incorporates detailed review from Konstantin.

- 1, 3, 4, 5, 6, 11 : done
- 2: done. actual changes are slightly different to keep the lines changed to minimum
- 7 : done. It is still recursive. I am not sure if non-recursive implementation buys anything.
We can avoid recursive calls to INodeFile if we want to.
- 8 , 9 : We use {{Long.MIN_VALUE}} to indicate "don't modify". This reduces quite a bit of
similar looking code.
- 10 : It is checked eventually in side {{startFileInternal()}} if the file being appended
has a partially filled block.
 

> Quotas for disk space management
> --------------------------------
>
>                 Key: HADOOP-3938
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3938
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: Robert Chansler
>            Assignee: Raghu Angadi
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-3938.patch, HADOOP-3938.patch, HADOOP-3938.patch, HADOOP-3938.patch,
HADOOP-3938.patch, hdfs_quota_admin_guide.pdf, hdfs_quota_admin_guide.xml
>
>
> Directory quotas for bytes limit the number of bytes used by files in and below the directory.
Operation is independent of name quotas (HADOOP-3187), but the implementation is parallel.
Each file is charged according to its length multiplied by its intended replication factor.

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