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https://issues.apache.org/jira/browse/HADOOP-5158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-5158:
---------------------------------

    Attachment: HADOOP-3938-branch-18.patch

attached HADOOP- 3938-branch-18.patch. 

"3938" in the name is intentional and it is 0.18 version of HADOOP-3938. i.e. 
it does not have follow up smaller fixes like HADOOP-4449. Since the patch is 
pretty big, this is done so that reviewers can verify if HADOOP-3938 is 
properly ported.

notes : 
 - hdfs_quota_admin_guide.xml is not included.
 - Many differences in {{FSImage.java}} and {{FSEditLog.java}} are for handling 
access time field that is added in 0.19 before the space quotas.

All the tests pass. 

> Port HDFS space quotas to 0.18
> ------------------------------
>
>                 Key: HADOOP-5158
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5158
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.18.3
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>         Attachments: HADOOP-3938-branch-18.patch
>
>
> 0.18 already has quotas for HDFS namespace (HADOOP-3187). HADOOP-3938 
> implements similar quotas for disk space on HDFS in 0.19. This jira proposes 
> to port HADOOP-3938 to 0.18.4.

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