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https://issues.apache.org/jira/browse/HDFS-319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J resolved HDFS-319.
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Resolution: Cannot Reproduce
Bad block lengths are indeed picked up by the DNs today and reported promptly.
> Add option to fsck that checks the crc
> --------------------------------------
>
> Key: HDFS-319
> URL: https://issues.apache.org/jira/browse/HDFS-319
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Johan Oskarsson
> Assignee: Sameer Paranjpye
>
> If I'm not mistaken the fsck command doesn't actually check the crc of the
> blocks.
> I just had a problem where a few blocks managed to get the size 0, fsck
> didn't report this but
> my hadoop programs started failing because some of the input data was
> corrupted.
> An option in the fsck program to actually check the crc would be nice, even
> though it would take a while to run.
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