[jira] [Resolved] (HDFS-2848) hdfs corruption appended to blocks is not detected by fs commands or fsck

["Ravi Prakash (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-2848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ravi Prakash resolved HDFS-2848.
--------------------------------

    Resolution: Not A Problem

Closing as discussed.
                
> hdfs corruption appended to blocks is not detected by fs commands or fsck
> -------------------------------------------------------------------------
>
>                 Key: HDFS-2848
>                 URL: https://issues.apache.org/jira/browse/HDFS-2848
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.23.0
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>
> Courtesy Pat White [~patwhitey2007]
> {quote}
> Appears that there is a regression in corrupt block detection by both fsck and fs cmds like 'cat'. Testcases for
> pre-block and block-overwrite corruption of all replicas is correctly reporting errors however post-block corruption is
> not, fsck on the filesystem reports it's Healthy and 'cat' returns without error. Looking at the DN blocks themselves,
> they clearly contain the injected corruption pattern.
> {quote}

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