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From "Ruyue Ma (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6707) BlockDecompressorStream.resetState() has a bug, which often causes the block decompressing not to work.
Date Mon, 07 Jun 2010 06:45:54 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876138#action_12876138
] 

Ruyue Ma commented on HADOOP-6707:
----------------------------------

 You have a sequencefile compressed with lzocodec. If you randomly sync(not seek) to a record
block, the decompression will not work.

I guess that MapFile maybe have the bug also.

> BlockDecompressorStream.resetState() has a bug, which often causes the block decompressing
not to work.
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6707
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6707
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>            Reporter: Ruyue Ma
>            Assignee: Ruyue Ma
>             Fix For: 0.21.0
>
>
> BlockDecompressorStream.resetState() has a bug.
> The method of resetState() doesn't reinit the two member variables(int originalBlockSize;
int noUncompressedBytes) of Class BlockDecompressorStream.  
> This bug will cause the block decompressing not to work.

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