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https://issues.apache.org/jira/browse/HDFS-48?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-48.
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Resolution: Duplicate
I'm going to close this as a dupe of HDFS-2251.
> NN should check a block's length even if the block is not a new block when
> processing a blockreport
> ---------------------------------------------------------------------------------------------------
>
> Key: HDFS-48
> URL: https://issues.apache.org/jira/browse/HDFS-48
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
>
> If the block length does not match the one in the blockMap, we should mark
> the block as corrupted. This could help clearing the polluted replicas caused
> by HADOOP-4810 and also help detect the on-disk block gets truncated/enlarged
> manually by accident.
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