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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3368) Missing blocks due to bad DataNodes comming up and down.
Date Fri, 11 May 2012 20:57:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13273609#comment-13273609
] 

Suresh Srinivas commented on HDFS-3368:
---------------------------------------

bq. Expectedly do1, do2, do3 malfunction again and go down shortly after reporting their blocks
to NN.
Konstantin, I am not sure how likely do1, do2 and do3 all go down with in 10 minutes. Is it
because these are flaky nodes?
                
> Missing blocks due to bad DataNodes comming up and down.
> --------------------------------------------------------
>
>                 Key: HDFS-3368
>                 URL: https://issues.apache.org/jira/browse/HDFS-3368
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0, 1.0.0, 2.0.0, 3.0.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>         Attachments: blockDeletePolicy-0.22.patch, blockDeletePolicy-trunk.patch, blockDeletePolicy.patch
>
>
> All replicas of a block can be removed if bad DataNodes come up and down during cluster
restart resulting in data loss.

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