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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4610) Always calculate mis-replicated blocks when safe-mode is turned off.
Date Fri, 07 Nov 2008 20:07:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645868#action_12645868
] 

Konstantin Shvachko commented on HADOOP-4610:
---------------------------------------------

> I think this should go into 0.18.3.

Setting the 'extension' to 0 does not have a real use case at the moment. 
I do not think we should apply it to 0.18 until a need has been developed.
I will commit it to 0.19 because this does not require a separate patch and more testing.

> Always calculate mis-replicated blocks when safe-mode is turned off.
> --------------------------------------------------------------------
>
>                 Key: HADOOP-4610
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4610
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.20.0
>
>         Attachments: NeededReplAlways.patch
>
>
> After HADOOP-4597 there is one last case when mis-replicated blocks are not processed.
It is when the safe-mode {{extension = 0}}.
> We should regenerate {{neededReplications}} and {{excessReplicateMap}} whenever the safe
mode is turned off.

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