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https://issues.apache.org/jira/browse/HDFS-4098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-4098:
-----------------------------------------

    Attachment: h4098_20130107.patch

h4098_20130107.patch: adds FileWithLink, INodeFileUnderConstructionWithLink and 
INodeFileUnderConstructionSnapshot.
                
> Support append to original files which are snapshotted
> ------------------------------------------------------
>
>                 Key: HDFS-4098
>                 URL: https://issues.apache.org/jira/browse/HDFS-4098
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h4098_20130107.patch
>
>
> When a regular file is reopened for append, the type is changed from 
> INodeFile to INodeFileUnderConstruction.  The type of snapshotted files (i.e. 
> original files) is INodeFileWithLink.  We have to support similar "under 
> construction" INodeFileWithLink.

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