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https://issues.apache.org/jira/browse/HDFS-8492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Walter Su updated HDFS-8492:
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Attachment: HDFS-8492.01.patch
Uploaded the patch. Thanks [~daryn] for reporting this.
> 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
> Attachments: 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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