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https://issues.apache.org/jira/browse/HADOOP-3283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591926#action_12591926
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dhruba borthakur commented on HADOOP-3283:
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1. The two new methods in the InterDatanodeProtocol should take a Block object 
as the first parameter.
2. The MiniDFSCluster should have a method named getDatanode.getDataNode() that 
returns an object of type InterDatanodeProtocol. This will allow tests to 
easily invoke RPCs in the InterDatanodeProtocol.



> Need a mechanism for data nodes to update generation stamps.
> ------------------------------------------------------------
>
>                 Key: HADOOP-3283
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3283
>             Project: Hadoop Core
>          Issue Type: New Feature
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 3283_20080423c.patch
>
>
> For implementing file append feature (HADOOP-1700), a generation stamp is 
> added to each block.  We need a mechanism for data nodes to update generation 
> stamps for lease recovery.

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