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https://issues.apache.org/jira/browse/HADOOP-4848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler updated HADOOP-4848:
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Fix Version/s: (was: 0.18.3)
0.20.0
Assignee: Hairong Kuang
Not urgent.
> NN should check a block's length even if the block is not a new block when
> processing a blockreport
> ---------------------------------------------------------------------------------------------------
>
> Key: HADOOP-4848
> URL: https://issues.apache.org/jira/browse/HADOOP-4848
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.0
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.20.0
>
>
> 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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