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From "Raghu Angadi (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 19:31:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645861#action_12645861
] 

Raghu Angadi commented on HADOOP-4610:
--------------------------------------

I think this should go into 0.18.3. This is a serious regression if 'extension' is set to
0 in some config. It will be many month before 0.20. becomes the stable branch. Note that
we would have thought threshold being set to 1.1 would be rare.. but it happens. 

+1 for the patch.



> 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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