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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1428) ChecksumFileSystem : some operations implicitly not supported.
Date Thu, 24 May 2007 19:28:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12498786
] 

Raghu Angadi commented on HADOOP-1428:
--------------------------------------

> would skip bytes on data stream.
I meant to say ... ONLY on data stream ...

> ChecksumFileSystem : some operations implicitly not supported.
> --------------------------------------------------------------
>
>                 Key: HADOOP-1428
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1428
>             Project: Hadoop
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.12.3
>            Reporter: Raghu Angadi
>             Fix For: 0.14.0
>
>
> It looks like {{skip()}} would skip bytes on data stream. That assures next read is going
to be a checksum error. If skip() is not supported, ideally it should throw an exception with
clear message.
> Also positional reads ({{read(long position, buf)}}) don't seem to checksum the data.
It might be ok, but it is not obvious to users.

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