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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-937) data node re-registration
Date Tue, 30 Jan 2007 22:06:33 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12468801
] 

Hadoop QA commented on HADOOP-937:
----------------------------------

+1, because http://issues.apache.org/jira/secure/attachment/12349950/register.patch applied
and successfully tested against trunk revision r501249.

> data node re-registration
> -------------------------
>
>                 Key: HADOOP-937
>                 URL: https://issues.apache.org/jira/browse/HADOOP-937
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.10.1
>            Reporter: Hairong Kuang
>         Assigned To: Hairong Kuang
>             Fix For: 0.11.0
>
>         Attachments: register.patch
>
>
> A name node should ask a data node to re-register when
> 1) the name node restarts; or
> 2) the name node receives a heartbeat from an unregistered data node; or
> 3) the name node recieves a heartbeat from a data node whose heart beat is lost.
> In response to the re-registration request, the data node sends a register request followed
by a block report.

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