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Posted to common-dev@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2008/05/14 09:07:55 UTC

[jira] Commented: (HADOOP-3310) Lease recovery for append

    [ https://issues.apache.org/jira/browse/HADOOP-3310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12596649#action_12596649 ] 

dhruba borthakur commented on HADOOP-3310:
------------------------------------------

Now that HADOOP-2656 has been committed, this issue is the next in line that is required for appends. Nicholas: if you are working on this this, feel free to upload a very early version of the patch so that we can review it earlier. Thanks.

> Lease recovery for append
> -------------------------
>
>                 Key: HADOOP-3310
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3310
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>
> In order to support file append, a GenerationStamp is associated with each block.  Lease recovery will be performed when there is a possibility that the replicas of a block in a lease may have different GenerationStamp values.
> For more details, see the documentation in HADOOP-1700.

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