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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8492) DN should notify NN when client requests a missing block
Date Fri, 06 Jan 2017 08:08:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Junping Du updated HDFS-8492:
-----------------------------
    Fix Version/s:     (was: 2.9.0)

> DN should notify NN when client requests a missing block
> --------------------------------------------------------
>
>                 Key: HDFS-8492
>                 URL: https://issues.apache.org/jira/browse/HDFS-8492
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Daryn Sharp
>            Assignee: Walter Su
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HDFS-8492-02.patch, HDFS-8492.01.patch
>
>
> If the DN has a block its volume map but not on-disk, it tells clients it's an invalid
block id.  The NN is not informed of the missing block until either the bp slice scanner or
the directory scanner detects the missing block.  DN should remove the replica from the volume
map and inform the NN.



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